Weather and temperature summary (December 28th to January 3rd): Strong cold air moving south; first snow observed in Tokyo; coldest of the season

2026/01/08 18:29

This is a summary of the weather and temperature from December 28, 2025 to January 3, 2026.


[About this period's weather]
#Characteristics of atmospheric pressure distribution
On the 28th, the area around Honshu was widely covered by a mobile anticyclone. There was a trough in the atmospheric pressure near northern Japan, and the spacing between isobars became narrower. On the 29th, the center of high pressure moved eastward to the east of Japan and south of Honshu. A low pressure system is moving north-northeast over the northern Sea of Japan. On the 30th, a low pressure system moved northward over the Sea of Okhotsk. At 9:00 a.m., a low pressure system also formed in the waters near the Kuril Islands, east of Japan, and south of the Nansei Islands. The center of a mobile anticyclone moves eastward south of Japan. On the 31st, a low pressure system accompanied by a front moved eastward east of Japan. A low pressure system in the Sea of Okhotsk is moving north-northwest. A winter-like pressure pattern is formed near Honshu. The low pressure system south of Honshu moves eastward and gradually approaches the Ogasawara Islands. On the 1st, a low pressure system moved south near the Mamiya Strait. Winter-type atmospheric pressure is present near Japan. On the 2nd, a series of low pressure systems formed in the eastern Kanto region. Both heading northeast. Winter-like atmospheric pressure patterns continue near Japan. On the 3rd, a low pressure system accompanied by a front moved northeast east of Japan. Near Honshu, the winter-like atmospheric pressure pattern continues to be high in the west and low in the east. A cold front extending from a low pressure system passes through the Ogasawara Islands.

#Precipitation
In the early hours of the 28th, the snow became heavier in Hokkaido, and in Urakawa, the snowfall in 3 hours was 18cm, breaking the highest value for December. It rained intermittently in the Nansei Islands. On the 29th, the Shear Line approached from the Sea of Japan. Rain fell on the Sea of Japan side of northern Japan and Hokuriku. Heavy rain fell in the Nansei Islands due to the influence of moist air circulating around the edge of a high-pressure system. On the 30th, rain and snow began in the morning on the Sea of Japan side of northern Japan and Hokuriku. By the afternoon, colder air gradually moved in and the area of snow expanded. The snow was falling heavily, especially along the mountains. On the 31st, snow and rain fell from northern Japan to Hokuriku. A heavy snow warning has been announced for Akita and Yamagata prefectures. On the 1st, cold air in the upper atmosphere moved southward, and some places in the Tohoku region experienced record-breaking snowfall, with over 80 cm of snow falling in 24 hours in Hijiori, Yamagata Prefecture. On the 2nd, strong cold air flowed into the sky, causing snow mainly on the Sea of Japan side. From the evening onwards, snow clouds developed in the Kanto region, with 1cm of snow falling in Tokyo and 5cm as far as Saitama. On the 3rd, snow fell from the Japan Sea side of northern Japan to the Sanin area. There were places along the mountains in the Kanto-Koshin region where 20cm of snow fell in three hours. In the afternoon, it gradually stopped in many places.

#Temperature
The morning of the 28th was extremely cold due to the effects of radiation cooling, making it the coldest of the season in the Kanto region. On the 29th, warm air flowed in and temperatures rose above normal across the country. In particular, there were many places in northern Japan where the temperature was higher than normal, with Sapporo recording a temperature of 5.6 C, 4.9 C higher than normal. On the 30th, warm air flowed in, causing temperatures to rise mainly on the Pacific side of eastern and western Japan. The temperature in central Tokyo was 15.3c, which is similar to late November. On the 31st, temperatures dropped in many areas compared to the previous day due to the influence of cold air moving south. There were many locations in midwinter, mainly in northern Japan. On the 1st, cold air moved south, causing severe cold mainly in northern Japan. It was also bitterly cold across eastern and western Japan, with temperatures lower than normal in many places, especially along the Sea of Japan. On the 2nd, it was bitterly cold, mainly in western Japan. Snow has been falling in central Tokyo since night, and temperatures are dropping. Temperatures exceeded 10 C during the day, but fell below 1 C at night. On the morning of the 3rd, the effects of cold air in the upper atmosphere remained, and many locations had new lowest temperatures this season. The morning minimum temperature in central Tokyo was -0.5c, the highest this season.



#Summary of the weather for this period (December 28th to January 3rd)
The average temperature was at or slightly lower than normal throughout the country, as cold air tends to flow in mainly during the latter half of the period. Central Tokyo has been experiencing a severe chill, with the first snowfall observed, and on the 3rd, the lowest temperature of the season was recorded at -0.5 C.
Precipitation was higher than normal on many days, mainly in the latter half of the period, with winter-like pressure patterns, and from the Sea of Japan side of northern Japan to the San'in area. On the other hand, from northern Japan to western Japan, precipitation was significantly lower than normal, mainly on the Pacific side, with many locations experiencing zero precipitation.
Sunshine hours were mostly sunny from eastern to western Japan, and in many places they were at or slightly above normal. The Japan Sea side of northern and western Japan had many days of snow and rain, and many places had less snow than normal.

[3-day winter storm] A large-scale cold vortex over mainland China; the coldest air of the season hits until Coming of Age Day

2026/01/08 12:58

# Today's strong winter pressure distribution Maximum wind speed 21.7 m/s
at Cape Soya # 3-day winter storm Large-scale cold vortex over mainland China Coldest air of the season
# 3-day holiday Beware of warning-level heavy snow, blizzard, and high waves



#Today's strong winter-type pressure pattern Maximum wind speed at Cape Soya 21.7m/s
Today, the 8th (Thursday), the winter-type pressure pattern is strengthening near Japan. Strong cold air is flowing into the sky, causing rough weather mainly on the Sea of Japan side.
Cold air below -42c is passing near 5500m above northern Hokkaido.
At Cape Soya, Wakkanai City, a maximum wind speed of 21.7 m/s was observed at 8:51 am.
As of noon, a heavy snow warning has been issued for the Ishikari region of Hokkaido.
Please be on guard for heavy snow tonight.
The blizzard warning and wave warning for northern Soya and Rishiri/Rebun have been lifted, but please continue to be careful of traffic disruptions due to snowdrifts and snowdrifts, strong winds, and high waves until tomorrow, the 9th (Friday).
The expected maximum instantaneous wind speed is 30 m/s even on land, and the wave height is 5 m.
The winter-like atmospheric pressure pattern will gradually loosen up until tomorrow, the 9th (Friday).
However, over the three-day weekend, winter-like atmospheric pressure patterns are expected to strengthen again, creating a winter storm centered on the Sea of Japan side.
From today, the 8th (Thursday), even stronger cold air will flow in, and there is a risk of severe weather over a wider area, increasing the possibility of warning-level heavy snow, blizzard, and high waves.

#3-day winter storm A large-scale cold vortex over mainland China The coldest air of the season



On the 10th (Saturday), the first day of the three-day holiday, a large-scale cold vortex with temperatures as low as -48c will form from northeastern China to Siberia at an altitude of around 5,500m.
Around Japan, a low pressure system is expected to rapidly develop as it moves through the Sea of Japan, resulting in a winter-like atmospheric pressure pattern once again.
Winds will become stronger and waves will rise over a wide area, and a strong cold air will begin to flow across western and northern Japan at night.
Towards the 11th (Sunday), the low pressure system in the Sea of Japan will continue to develop and move toward the vicinity of Sakhalin.Then, strong cold air will flow into the vicinity of Japan until the 12th (Monday), coming of age, creating a strong winter-like pressure pattern.
On the 12th (Monday), Coming of Age Day, northern Japan will be completely covered in cold air with temperatures below -42c at an altitude of around 5500m.
This is about 10 degrees Celsius lower than normal, and is the strongest cold air flowing into northern Japan this season.



In addition, cold air with temperatures below -12c at an altitude of around 1500 meters will move south to the vicinity of China, where there was a strong shaking the other day.
It is nearly 10 degrees Celsius lower than normal, and this is also the strongest cold air flowing into western Japan this season.



From today, the 8th (Thursday), even stronger cold air will flow in and there is a risk of severe weather over a wider area.
There will be heavy storms, heavy snowfall, and warning level heavy snow in some places along the Sea of Japan side of western and eastern Japan and in northern Japan.

#3-day holiday Warning-level heavy snow, blizzard, and high waves / 10th (Saturday), warning-level blizzard in northern Kyushu, San'in, Nagano Prefecture, Hokuriku, and northern Japan; warning-level high waves in San'in and northeast Japan Sea side; 11th (Sun) warning-level blizzard in western and northern Japan Sea of Japan sides On the 11th (Sunday) and 12th (Monday), there is a risk of warning-level heavy snowfall in the Sea of Japan side of China to Hokkaido, Gifu prefecture, northern Nagano prefecture, and northern Gunma prefecture, warning-level snow storms on the Sea of Japan side north of Hokuriku, and warning-level high waves in the Sea of Japan side of western and northern Japan.
Please be aware of the latest information as the three-day holiday may affect transportation.
Then, winter-like atmospheric pressure patterns are expected to continue into the 14th (Wednesday).

Winter storm from tonight to tomorrow and three-day weekend Warning-level heavy snow, blizzard, and high waves Shimane and Tottori prefectures will also turn to snow

2026/01/07 13:52

There will be a winter storm mainly on the Sea of Japan side for the three-day weekend, from the night of Wednesday the 7th to tomorrow the 8th (Thursday).
There is a risk of warning-level heavy snow, blizzard, and high waves.

#Cold air passing at -42c or below at an altitude of around 5500m
Towards the evening of today, the 7th (Wednesday), a low pressure system with a front in the northern Sea of Japan is rapidly developing and approaching Hokkaido, and is expected to pass through the Soya Strait and reach the Sea of Okhotsk by tomorrow, the 8th (Thursday).
Also, a front extending from a low pressure system will pass near Honshu.
After the front passes, the area around Japan is expected to have a winter-like atmospheric pressure pattern.
In particular, on the night of tomorrow, the 8th (Thursday), cold air with temperatures below -36c will pass through northern Japan at an altitude of around 5,500m, temporarily strengthening the winter-like atmospheric pressure pattern.
In northern Hokkaido, even stronger cold air with temperatures below -42c at an altitude of around 5500m is expected to pass through.



Today, the 7th (Wednesday), there will be some places on the Japan Sea side of western Japan where it will rain or snow.
Even in Shimane Prefecture and Tottori Prefecture, where a seismic intensity of 5+ was observed yesterday, the 6th (Tuesday), there are expected to be some places where it will rain or snow with thunder from the evening onwards.
There will be more places in Hokuriku where it will rain or snow at night.
On the Sea of Japan side of Tohoku, it is expected that there will be rain and snow in coastal areas, and snow in other areas.
In Hokkaido, snow will gradually spread from the Sea of Japan side.

#Tonight to tomorrow: Warning level of high waves, heavy snow, and blizzard expected
Tomorrow, the 8th (Thursday), China is expected to experience intermittent snowfall, with more areas in Shimane, Tottori, northern Hiroshima, and northern Okayama prefectures turning to snow.
There will be more places north of Hokuriku where it will snow, and it will snow intermittently accompanied by thunder.
From today's Wednesday night, the 7th, to tomorrow, the 8th (Thursday), there is a risk of warning-level high waves in Hokuriku, warning-level heavy snowfall in Aomori Prefecture, and warning-level blizzard and high waves on the Sea of Japan side of northern Japan.
In the northern part of Soya and Rishiri/Rebun in northern Hokkaido, which are close to a rapidly developing cyclone, from early morning to early noon on the 8th (Thursday), extremely strong southwesterly and then northwesterly winds will blow, accompanied by snow, and the sea will become turbulent.
The maximum instantaneous wind speed expected on the 8th tomorrow (Thursday) is 35 m/s on land, and the wave height is 6 m.
Be wary of traffic disruptions due to heavy blizzard and snowdrifts, strong winds, and high waves.



#3-day holiday Today, stormy weather is expected to cover an even wider area than tomorrow
The winter-like atmospheric pressure pattern is expected to loosen on the 9th (Friday), and the cold air in the sky is expected to move northward for a while.
However, there is a risk of another winter storm over the three-day weekend, causing severe weather over a wider area.



From around the 10th (Saturday) to the 11th (Sunday), a low pressure system will develop as it moves from the Sea of Japan to the Sea of Okhotsk.Then, strong cold air will flow into the vicinity of Japan until the 12th (Monday), coming of age, creating a strong winter-like pressure pattern.
As a result, there will be heavy storms and heavy storms in some areas along the Sea of Japan side of western and eastern Japan, as well as in northern Japan.
On the 10th (Saturday), there is a risk of warning-level blizzard and snow in northern Kyushu, Hokuriku, and the Sea of Japan side of northeastern Japan, and warning-level high waves in the San'in area and the Sea of Japan side of northeastern Japan.On the 11th (Sunday) and 12th (Monday), there is a risk of warning-level heavy snow and blizzards on the Japan Sea side north of Hokuriku, and warning-level high waves in the San'in area and the Sea of Japan side of Hokkaido.
Please be aware of the latest information as the three-day holiday may affect transportation.

Weekly weather: Cold waves are here! There is a risk of heavy snow and blizzard on the Sea of Japan side during the three-day holiday period.

2026/01/07 08:22

From now on, the winter-like atmospheric pressure pattern will become stronger around Honshu, and strong cold air will move southward. During the three-day holiday period, there will be heavy snow on the Sea of Japan side. The effects of the cold air are expected to linger long after the three-day weekend ends.



On the 5th of last year, the Japan Meteorological Agency announced "early weather information regarding heavy snow." This information is being announced at a time when the possibility of significant snowfall on a ``once-in-a-decade'' level is higher than usual. From the Sea of Japan side of Tohoku to the Hokuriku region, the amount of snowfall over the five days is expected to be approximately 1.5 to 2.5 times the normal level, which is expected to be a significant amount.




A low pressure system will pass through the Sea of Japan around the 10th (Saturday), the first day of the three-day holiday. The low pressure system is expected to rapidly develop and move toward Sakhalin until the 11th (Sunday), and a winter-like pressure pattern is expected to strengthen around Honshu.

For this reason, from around the 11th of the three-day weekend, heavy snow will be expected on the Sea of Japan side from Tohoku to Hokuriku, and heavy snow will also be felt along the mountains in the northern Kanto region, the Koshin region, and in the mountainous areas of Gifu Prefecture in the Tokai region. It is expected to snow in the Sanin region starting around the 11th. In areas along the Sea of Japan, there is a risk of strong winds and a blizzard.

The strong cold air in the sky is expected to remain over Honshu for a long time after the three-day weekend. Around the 13th, the low pressure system is expected to pass through the Sea of Japan again, and around the 14th, the winter-like pressure pattern is expected to become stronger again. As a result, it is expected that after the 13th, there will be widespread snow from northern Japan to western Japan on the Sea of Japan side, and the snowfall will further increase.

If you have plans during the three-day weekend or are going to the Coming of Age Day event on the 12th, please be aware of the impact on transportation and be sure to check the latest information. Be careful of traffic disruptions caused by heavy snow and poor visibility caused by blizzards, and be aware of avalanches in the Sanin area, where a strong earthquake occurred.

Tomorrow, the 7th (Wednesday), the weather will be downhill on the Sea of ??Japan side.The next day, the 8th (Thursday), the winter-like atmospheric pressure pattern will strengthen, and there is a risk of heavy snow on the Japan Sea side.

2026/01/06 21:57

Tomorrow, the 7th (Wednesday), three low pressure systems will move near Honshu. In the morning, there will be rain and snow in parts of western Japan and the Pacific side of eastern Japan, and in the afternoon the weather will turn downward from the Sea of Japan side of northern Japan to Hokuriku.



Tomorrow, the 7th, in southern Kyushu and Okinawa, rain clouds will approach from the west, so there will be some places where it will rain mainly in the morning. Please be careful of lightning as it will be accompanied by local lightning.



Some areas of the Kanto region will be affected by the low pressure that will form near the Izu Islands by morning. From noon to early afternoon, rain is expected to occur along the coast, with some snow mixed in in some places. The period of rain and snow will be short as the low pressure system will gradually move out to the east over the ocean. However, the air is cold, and daytime temperatures are expected to reach 10 degrees Celsius in many places. Be sure to take precautions against the cold.



From the Sea of Japan side of northern Japan to the Hokuriku region, it will gradually become rainy and snowy due to the influence of low pressure and fronts moving through the Sea of Japan. Due to the warm air, it is expected to rain in many places in Hokuriku and the Sea of Japan side of northeastern Japan, and in Hokkaido, it will be rain and wet snow, and the wind will become stronger through the night, causing blizzard in some places. In areas with heavy snowfall, be careful of deteriorating road conditions. Even in Tottori and Shimane prefectures, which experienced strong shaking on the 6th, there are likely to be some places where it will rain or snow in the evening.




The 8th tomorrow (Thursday), the winter-like atmospheric pressure pattern is expected to strengthen near Honshu, and strong cold air with temperatures below -6 C at an altitude of approximately 1,500 meters is expected to move southward to near Shikoku. The spacing between the isobar lines is narrow vertically, and there is a risk of heavy snow and strong winds from the Sea of Japan side of northern Japan to the Hokuriku region, resulting in a blizzard. Be careful of traffic disruptions caused by heavy snow and poor visibility caused by blizzards, and be wary of high waves in coastal areas. There will be places in the northern Kinki region and the Sanin area where it will snow and rain.



There is a high risk of rockfalls and landslides near Tottori and Shimane prefectures, which experienced strong shaking. In areas with heavy snowfall, be careful of avalanches and falling snow.

It will snow widely in the Chugoku region the next day. Winter storm on the Honkai side during three consecutive holidays. Winter-like atmospheric pressure pattern will continue even after Coming of Age Day [Weekly Weather Forecast]

2026/01/06 12:53

Weekly Weather Forecast
#Winter-like atmospheric pressure pattern is increasing frequently; snow will spread across the Chugoku region tomorrow
#3-day holiday Winter storm on the Sea of Japan side Winter-type pressure pattern will continue even after Coming of Age Day
#Cold weather continues



#Winter-like pressure patterns are expected to strengthen frequently The day after, it will snow widely in the Chugoku region
For the next week, it looks like it will be cold, and the winter-type pressure patterns will frequently become stronger, and cold air is expected to flow in with increasing strength.
Tomorrow, the 7th (Wednesday), a low pressure system with a front in the central Japan Sea is expected to rapidly develop and move toward the northern Japan Sea.
A front extending from a low pressure system will pass near Honshu, and there will be showers and snow showers on the Sea of Japan side of western Japan from the evening onwards.
In Hokuriku, it is expected to rain in coastal areas from around noon, and more places are expected to experience rain or snow at night.
There will be places in northern Japan where it will snow in the afternoon.
The following day, on the 8th (Thursday), a rapidly developing low pressure system will move toward the Sea of Okhotsk, and the front will pass near northern Japan, which is expected to bring about a winter-like pressure pattern around Japan once again.



The winter-like pressure pattern will become stronger, and as strong cold air flows into the upper atmosphere, the area where snow will fall will expand on the Sea of Japan side.
Snow is expected to fall in parts of northern Kyushu, the Chugoku-Hokuriku Japan Sea side, and northern Japan.
Snow will continue to fall in Shimane and Tottori prefectures, where a seismic intensity of 5+ was observed today, the 6th (Tuesday).
It is expected to snow temporarily in northern Hiroshima and Okayama prefectures.
In eastern and northern Japan, there will be strong winds and rising waves, and in Hokkaido, there will be snowstorms and rough weather.
Although the winter-like pressure pattern will temporarily loosen on the 9th (Friday), the winter-like pressure pattern will strengthen again over the three-day weekend, making it likely to become a winter storm.

#3-day holiday winter storm on the Sea of Japan side Winter-type atmospheric pressure pattern will continue even after Coming of Age Day
On the first day of the 3-day holiday, from the 10th (Sat.) to the 11th (Sun.), a low pressure system is expected to develop as it passes from the Sea of Japan, near northern Japan, and toward the Sea of Okhotsk.
Strong cold air in the upper atmosphere will flow westward, and the winter-like pressure pattern will become stronger near Japan.



On the 10th (Saturday), rain and snow are expected to fall from the San'in area to the Sea of Japan side of the Hokuriku region, and there will be places where wet snow will fall along the mountains in the northern part of Gifu, Nagano, and Gunma prefectures.
It will snow intermittently in northern Japan.
On the 11th (Sunday), rain is expected to change to snow in more places in Shimane and Tottori prefectures, where seismic intensity levels of 5+ were observed.
There will be more snowfall in western and eastern Japan on the Sea of Japan side and in northern Japan, and there is a risk of heavy snowfall reaching warning level in northern Nagano Prefecture, northern Gunma Prefecture, and northern Japan on the Sea of Japan side.
From the 10th (Sat) to the 11th (Sun), there is a risk of warning-level snowstorms in the Sea of Japan side of western and eastern Japan and northern Japan, which will turn into a blizzard and become a winter storm.
Then, on the 12th (Monday) Coming of Age Day and the 13th (Tuesday), winter-like atmospheric pressure patterns will continue around Japan, and snow is expected to spread across the Sea of Japan side.
Please be aware of the latest information as transportation may be affected during the three-day holiday period.








#The midwinter cold continues
As cold air repeatedly flows into Japan, it is expected that the midwinter cold will continue.
Please take care of your health.

Temperatures are lower nationwide than the previous day; severe cold in northern Japan

2026/01/06 07:56

A winter-like atmospheric pressure pattern continues near Japan, and cold air in the upper atmosphere is moving southward. The weather is getting colder, especially in Hokkaido, and Rikubetsu in the Tokachi region of Hokkaido recorded -27.5 C, the lowest temperature in the country this season, at 7:01 am.

During the day, temperatures rose yesterday (the 5th) in eastern and western Japan, and are likely to drop in many places, and it looks like it will be winter-like cold for this time of year in many places.
Northern Japan will continue to experience severe cold weather, and Hokkaido is expected to be in the middle of winter for the entire prefecture.



The predicted maximum temperature is -4c in Sapporo, 4c in Sendai, 11c in Tokyo, 9c in Nagoya, 6c in Kanazawa, 10c in Osaka, 13c in Kochi, and 12c in Fukuoka.
Even from eastern Japan to western Japan, there are likely to be places where it will be cold in the single digits during the day.
There will be a big difference in temperature from the previous day, so if you go out, please take proper measures to protect yourself from the cold and be careful not to get sick.

Today's weather on the 6th (Tuesday): Continued snow and rain on the Sea of ??Japan side; dry winter weather on the Pacific side

2026/01/06 06:20

Today, the 6th (Tuesday), winter-like atmospheric pressure patterns will continue around Japan. It looks like it will be a day of heavy snow and rain on the Sea of Japan coast from northern Japan to Hokuriku. There are many sunny places on the Pacific side, so you need to be careful about dry weather.



From the Sea of Japan side of Hokkaido to the Hokuriku region, the weather is likely to be prone to snow and rain. There are some places where the rain will be stronger and may be accompanied by thunder for a while, especially in the morning, so please be careful of lightning strikes, gusts of wind, and increased snowfall.
Also, strong winds will continue in the coastal areas, so it is likely that there will be snowstorms in some places. You also need to be careful about poor visibility due to snowstorms.
It will gradually stop in many places late at night.

The weather in northern Kinki and the Sanin area will require rain gear in the morning, but it is expected to stop in the afternoon in many places.

On the other hand, there will be many sunny areas in Kyushu and the Pacific side of eastern and western Japan. The temperature in each region will drop from the day before, so please be sure to protect yourself from the cold. The air will continue to dry, so please be careful when handling fire.

3-day holiday Winter storm on the Sea of Japan side Winter-type atmospheric pressure pattern will continue until Coming of Age Day It will continue to be cold like the cold from now on [Weekly weather forecast]

2026/01/05 12:42

Weekly Weather Forecast
#Winter-type atmospheric pressure pattern is often strengthened
#3-day holiday Winter storm on the Japan Sea side Winter-type pressure pattern will continue until Coming of Age Day
#Cold weather continues



#Winter-like atmospheric pressure patterns are becoming stronger
From today, the 5th (Monday), we will be experiencing the ``Shokan'' of the 24 solar terms.
This is the time when the cold weather becomes severe, and the period of cold weather and cold weather leading up to Setsubun is called ``Kan no Uchi.''
The first day of Kokan is also called ``Kan-no-iri''.
For the next week, it is expected to be cold, with winter-like pressure patterns becoming more frequent, and cold air expected to flow in with increasing strength.
Tomorrow, the 6th (Tuesday), in the afternoon, the winter-like atmospheric pressure pattern will loosen from the west, and the area of snow and rain on the Sea of Japan side will become narrower.
A low-pressure system will form in the central part of the Japan Sea at night, and is expected to rapidly develop and move toward the northern part of the Japan Sea the next day (Wednesday), the 7th.
The front extending from the low pressure system will pass near northern Japan, so there will be rain and snow in Hokuriku and snow in northern Japan.
On the 8th (Thursday), a low pressure system is expected to develop as it moves towards the Sea of Okhotsk, and the front will pass near northern Japan, resulting in winter-like pressure patterns near Japan once again.



The winter-like pressure pattern will become stronger, and as strong cold air flows into the upper atmosphere, the area where snow will fall will expand on the Sea of Japan side.
Rain and snow are expected in northern Kyushu, and snow is expected to fall in the Chugoku-Hokuriku Japan Sea side and northern Japan.
To the east and north of Japan, the Sea of Japan side will experience rough weather with strong winds, rising waves, and blowing snow.
Although the winter-like pressure pattern will temporarily loosen on the 9th (Friday), the winter-like pressure pattern will strengthen again over the three-day weekend, making it likely to become a winter storm.

#3-day holiday winter storm on the Sea of Japan side Winter-type atmospheric pressure pattern will continue until Coming of Age Day
On Saturday, the 10th, the first day of the 3-day holiday, a low pressure system is expected to develop as it passes near northern Japan and heads toward the Sea of Okhotsk.
Winter-like air pressure will become stronger near Japan, where strong cold air will flow into the upper atmosphere as it moves westward.



It is expected that rain and snow will fall from the San'in area to the Sea of Japan side of Hokuriku, and there will be places where wet snow will fall along the mountains in the northern part of Gifu, Nagano, and Gunma prefectures.
It will snow intermittently in northern Japan.
The weather is expected to be rough in eastern and northern Japan on the Sea of Japan side.
On the Sea of Japan side of Hokkaido, there is a risk of a warning-level blizzard, which could turn into a blizzard and become a winter storm.
After that, the winter-like atmospheric pressure pattern will continue around Japan until the 12th (Monday), Coming of Age Day, the last day of the three-day holiday.
Please be aware of the latest information as transportation may be affected during the three-day holiday period.





#The midwinter cold continues
As cold air repeatedly flows into Japan, the midwinter cold is expected to continue.
Please take care of your health.

Heavy snow and blizzard on the Sea of ??Japan side, dry weather on the Pacific Ocean side, and be careful when handling fire.

2026/01/05 09:54

There is a developed low pressure system east of Kamchatka that is moving northeast.
There is also a low pressure system east of the Kuril Islands that is moving east.
On the other hand, high pressure is extending eastward from the continent, creating a winter-like atmospheric pressure pattern around Japan.



Currently, it is snowing and raining from Hokkaido to Hokuriku, and raining and snowing in Kyushu and Shikoku.

Today, the 5th (Monday), the winter-like pressure pattern is expected to intensify, and we will be affected by a trough of pressure accompanied by cold air of -30 degrees Celsius or less at an altitude of approximately 5,500 meters.





From Hokkaido to Hokuriku, there are many places on the Sea of Japan side where it snows and rains.
Please be aware that the atmospheric conditions in Tohoku and Hokuriku may become extremely unstable, leading to heavy snowfall accompanied by thunder.
Also, rain and snow are expected to fall in some places from the Kinki region to the Okinawa region due to the cold and humid air.
Although there are some places on the Pacific side of northern and eastern Japan, it will be sunny, but the air will remain dry. Please be careful when handling fire.