[3-month forecast] Dry air on the Pacific side of eastern and western Japan. Be careful when handling fire. Northern Japan will be hotter than normal in March. Be careful of damage from melting snow.

2025/12/23 16:51

Today, the 23rd (Tuesday), the Japan Meteorological Agency announced the weather forecast for the next three months (January to March).
Temperatures over the next three months will be at or above normal in northern Japan, as they will not be affected by cold air.
In particular, the temperature in March next year is likely to be higher than normal in northern Japan, and the footsteps of spring are likely to be felt earlier than normal, but we need to be careful about the damage caused by snowmelt.
Precipitation over the next three months will be less affected by low pressure, so it will be low on the Pacific side of eastern and western Japan and Okinawa and Amami, and will be at or below normal on the Sea of Japan side of western Japan.
Although it is originally a dry period mainly on the Pacific side, there is a possibility that precipitation in January and February next year will be lower than normal on the Pacific side of eastern and western Japan.
This is the season when forest fires occur frequently, so please be careful when handling fire.



Expected characteristics of the ocean and atmosphere
Sea surface temperatures in the equatorial Pacific Ocean will gradually disappear from low conditions in the central and eastern regions, but will remain high in the western regions.
Meanwhile, sea surface temperatures are expected to remain low in the Indian Ocean.
For this reason, cumulonimbus clouds are likely to occur from Indonesia to the vicinity of the Philippines.
As a result of these effects, upper-level westerly winds are expected to meander northward over eastern Eurasia and southward near Japan, but are expected to flow at generally normal positions.
The Siberian High is weak on the northeast side, and there will be periods when its overhang to the southeast is somewhat strong.
From these facts, it is expected that there will be a period when the northerly seasonal winds will be strong toward the Philippines, and the winter-like pressure pattern will be strong in western Japan, Okinawa, and Amami.
The Pacific side of eastern Japan, western Japan, and Okinawa/Amami will be less susceptible to the effects of low pressure.
On the other hand, the winter-like atmospheric pressure pattern will not last long, especially in northern Japan, so it is unlikely to be affected by cold air.
However, there is a possibility that cold air will temporarily flow into northern Japan, causing heavy snowfall that will rapidly increase snowfall in a short period of time, especially along the Sea of Japan side.





#January
The Pacific side of eastern and western Japan is less affected by low pressure, so there will be more sunny days than normal.
The average temperature in Okinawa and Amami is expected to be at or below normal.
Precipitation will be at or below normal on the Pacific side of eastern and western Japan, Okinawa and Amami.

#February
As it is less affected by low pressure, the Pacific side of eastern and western Japan is expected to have more sunny days than normal, while the Sea of Japan side of western Japan is expected to have fewer cloudy, snowy, or rainy days than normal.
Average temperatures will be near normal throughout the country, and precipitation will be near normal or below normal in the Pacific side of eastern Japan, western Japan, and Okinawa/Amami.

#March
In eastern and western Japan, Okinawa and Amami, the weather is expected to change every few days.
The average temperature will be higher than normal in northern Japan, and at or above normal in eastern Japan.
Precipitation is expected to be at or below normal in Okinawa and Amami.

[Forecast of 7c tomorrow in Tokyo] A change from the original forecast - severe cold and cold rain on Christmas Eve

2025/12/23 13:03

Today, the 23rd (Tuesday), is covered by high pressure, and many places are experiencing mild winter skies.

However, at night, the center of the high pressure will move away to the east of Japan,
humid air will flow in from the south,
and there will be places in the Kinki and Kyushu regions where it will start to rain.



Looking at the forecast weather map for the night of tomorrow, the 24th (Wednesday),
two low pressure systems are expected to pass across Honshu.

As a result, it will rain across the country tomorrow, the 24th (Wednesday).




The influence of warm, humid air flowing towards the low pressure system and front will make the atmospheric condition unstable, and heavy rain with thunder is likely to occur in some places in Kyushu into the morning of the 24th (Wednesday),
in the southern Kinki and Tokai regions after the evening.

There will be rain and thunderstorms in the Kanto region from dawn and in the Tohoku region from noon, and there is a possibility that the rain will become stronger.



The initial forecast was for a strong flow of warm air toward a low pressure system,
As of yesterday, the predicted maximum temperature in Tokyo on Wednesday the 24th was 12c.

However, today it is forecast that northerly winds will strengthen towards the low-pressure system moving along the southern coast of Honshu,
and the forecast has changed to the forecast that temperatures will drop significantly, especially near the Kanto region.

It is expected to be as cold as mid-winter at 7c in places like Tokyo and Saitama, and 8c in places like Yokohama and Utsunomiya.

Initially, it was predicted that it would be a warm Christmas in the Kanto region, but
the forecast has drastically changed to severe cold and freezing rain.
Please be careful not to get sick due to changes in temperature.



A fairly strong cold air
(the strongest cold air this season over western Japan) is expected to flow westward around the 26th and 27th.

The long-term forecast predicted a ``warm winter'' this year, but
sometimes strong cold air will flow in and the daily temperature difference will be quite large.

As forecasts may change significantly in the future,
Please check the latest weather information.

Weather for today, the 23rd (Tuesday): Sunshine will reach a wide area; watch out for showers at night, mainly on the Pacific side of western Japan

2025/12/23 06:22

Today, the 23rd (Tuesday), high pressure will move near Japan, and the winter-like pressure pattern will loosen. During the day, sunlight will reach many places, but the weather seems to be heading downhill in western Japan.



In northern Japan, the weather will improve and many places will be sunny during the day. Clouds tend to spread in the evening, and there are likely to be some places in Hokkaido where it will begin to snow late at night. If you are returning late, it is a good idea to have a folding umbrella just in case.

It will be sunny in many places from eastern Japan to western Japan, covered by high pressure. From the afternoon onward, clouds are expected to spread from the East Sea to the Pacific Ocean to the west, and rain is expected to begin at night. Even if it's not raining when you go out, it's a good idea to have rain gear ready.
The Kanto region will have clear blue skies. The weather will be bad tomorrow, so please take advantage of the sunshine.

Tomorrow morning will be cold in many places, and the temperature rises slowly during the day, making it cold enough for this time of year.

2025/12/22 19:38

Today, the 22nd, there was a winter-like atmospheric pressure pattern around Japan, and as the cold air in the sky moved southward, the rise in temperature was slow and it was a cold day across the country.



Tomorrow, the 23rd, the area around Japan will be covered in high pressure, and many places will be sunny from the morning, and the morning will be colder due to radiation cooling.
The predicted minimum temperature for tomorrow is -5c in Sapporo, -1c in Sendai, 3c in Tokyo, 4c in Nagoya, 2c in Kanazawa, 4c in Osaka, 3c in Kochi, and 7c in Fukuoka.
Please take proper measures to protect yourself from the cold as the temperature will be below this morning's lowest temperature in all areas.



The temperature is not expected to rise much during the day, as the effects of cold air will remain even in regions where it will be sunny, especially in northern and eastern Japan. The cold winter will continue in many places around this time of year. On the other hand, in western Japan, there will be less impact from the cold air, and the daytime temperature will be higher than today, making it a pleasant and sunny day.
The predicted maximum temperature is Sapporo 1c, Sendai 7c, Tokyo 11c, Nagoya 13c, Kanazawa 13c, Osaka 14c, Kochi 16c, and Fukuoka 18c.

Widespread rain on Christmas Eve Heavy snow and blizzard on the Sea of Japan side after Christmas Will affect the rush to return home Some days go from extremely high to low.

2025/12/22 12:34

Weekly Weather Forecast
# Widespread rain on Christmas Eve, some places still have Christmas rain
#26th, winter-type atmospheric pressure distribution Stormy weather on the Japan Sea side Heavy snow, blizzard affecting return home
#Significant high temperature around Christmas After that, lower than normal temperature What about the New Year holidays



#Christmas Eve: Widespread rain. Christmas rain will remain in many places.
Around the Kinki region, clouds will increase due to a trough in atmospheric pressure and humid air, and rain is expected to occur in some places from the evening onwards.
The day after Christmas Eve, the 24th (Wednesday), a low-pressure front accompanied by a front will move eastward over the Sea of Japan, and a new low-pressure system will form near the Kii Peninsula and move eastward along the southern coast of Honshu.
In the morning, it is starting to rain in some places in the Kinki region and eastern Japan, and before noon it will start raining in Kyushu, Chugoku, and Tohoku, and it is expected to rain over a wide area in the afternoon.
Atmospheric conditions will be unstable as warm and humid air flows in towards a low pressure system and front.
Please be careful of lightning strikes, gusts of wind, and localized heavy rain mainly in the Kinki region and the Pacific side of the Tokai region.
In addition, due to the influence of this warm air, there are many places in Hokkaido where it will rain, and there will be places in the north where it will be wet and snowy.
Please be careful of deteriorating road conditions.
Christmas Day, the 25th (Thursday), will continue to rain in some places due to the effects of low pressure and fronts, and northern Hokkaido will likely be the area where it will snow and lead to a white Christmas.



#26th winter-type pressure distribution Stormy weather on the Sea of Japan side Heavy snow and blizzard impact return home
After Christmas, the low pressure system and front will pass, and the area around Japan is expected to experience a temporary winter-like atmospheric pressure pattern on the 26th (Friday).
Strong cold air is expected to move southward, and the cold air will reach its peak from the 26th (Friday) to the 27th (Saturday).
Cold air with temperatures below -6c at an altitude of 1,500m, which is a guideline for snowfall on flatlands, is expected to move south to northern Kyushu, Shikoku, the Kii Peninsula, and the Kanto region, and even stronger cold air with temperatures below -12c is expected to move south to parts of Hokuriku and southern Tohoku.
There will be places in the sky above Hokkaido where very strong midwinter cold air, around -18c, will flow in.



It is expected that the weather will be rough, mainly in the Sea of Japan side of western and northern Japan.
Depending on how the winter-type air pressure distribution strengthens, heavy snow may fall in a short period of time, mainly in Nagano Prefecture and Hokuriku, leading to warning-level heavy snow.
There will be strong winds, snow, and high waves.
Winds will become stronger nationwide, so be careful of strong winds and high waves.
Transportation may be affected, and the rush to return home is about to begin, so please keep an eye on the latest weather and traffic information.

#Significant high temperatures around Christmas, then lower temperatures than normal during the year-end and New Year holidays





The temperature difference is likely to increase over the next week.
From Christmas Eve to around Christmas, warm air will move in toward low pressure systems and fronts, and temperatures will be much higher than normal.
In snowy areas, be careful of avalanches and melting snow.
On the other hand, after Christmas, the cold air is expected to move south and temperatures will be below normal, making it even colder.
During the year-end and New Year holidays, temperatures will be near normal in Okinawa and Kyushu, while temperatures elsewhere will be high, and temperatures north of the Kanto region will once again be quite high.

Today, the 22nd (Monday), is the 24th seasonal ``winter solstice.'' The northerly wind is cold, and the cold of winter returns nationwide.

2025/12/22 06:45

Today, the 22nd (Monday), is the 24 solar terms ``Winter Solstice.''

The "winter solstice" of the twenty-four solar terms is the day in the Northern Hemisphere when the night is the longest and the daylight hours are the shortest. Although it is the middle of winter according to the calendar, it means that the cold and harshness of winter is about to begin.

The winter solstice is famous for the custom of taking a yuzu bath and eating pumpkin.
"Yuzuyu" is said to heal cracks and chapped skin, improve blood circulation, and help prevent colds.
The custom of eating ``pumpkin'' is carried out on the turning point of the winter solstice to provide nutrients in order to survive the coming winter when fresh vegetables will be scarce.



Now, today, the 22nd (Monday), the "winter solstice," the fronts and low pressure systems that brought widespread rain until yesterday will move away to the east of Japan. A high pressure system protrudes from the continent near Honshu, forming a temporary winter-like pressure pattern around Honshu.
Because the isobars are closely spaced vertically and cold winds blow from the north, it will be much colder in many places than on the 21st.

The Sea of Japan coast from northern Japan to the San'in area will experience cold rain and snow in many places, especially in the morning. There are places in Hokkaido where snowstorms occur, so please be careful of poor visibility. Even in the Kanto region, there are likely to be some areas with showers along the southern coast.
As high pressure becomes dominant in the afternoon, the rain and snow are expected to stop in the afternoon, and the weather is expected to start to recover.

The wind is cold today, and it may actually feel colder than the temperature. Tonight, take a soak in the yuzu bath to warm your body to the core before resting.

10-day weather forecast. Rain is forecast nationwide this Christmas. What will the weather be like from then until New Year's Eve

2025/12/21 22:50

The weather toward the end of next year is likely to be wide-spread rain due to the effects of low pressure and fronts, and strong cold air moving southward will likely lead to heavier snow, especially on the Sea of Japan side. There is a possibility of rain around the 31st (Wednesday) of New Year's Eve, mainly on the Sea of Japan side.



Tomorrow, the 22nd (Monday), there will be a temporary winter-like atmospheric pressure pattern, which will bring rain and snow from the Japan Sea side of northern Japan to Hokuriku and the Sanin area. However, the rain and snow are expected to mainly occur in the morning and stop in many places by the afternoon.
The Pacific side of northern Japan and western Japan will be largely sunny. It is expected to become sunny in many places the day after tomorrow and into the 23rd (Tuesday).



A low pressure system or front is expected to pass near Japan around Christmas on the 24th (Wednesday) and 25th (Thursday). Rain will be widespread across the country, and there will be some places on the Pacific side of western and eastern Japan with heavy rainfall. Hokkaido is expected to experience snow on the 25th.

Then, with the passage of a low pressure system and front, strong cold air in the upper atmosphere will move southward, and from around the 26th (Friday) to around the 28th (Sunday), snow is likely to fall in many places, mainly from northern Japan to the Sea of Japan side of the San'in region. Temperatures will drop significantly, and in some places it will be as cold as mid-winter. In areas along the Sea of Japan, there is a possibility of heavy snowfall during the rush to return home, so please be sure to check the latest weather and traffic information.

Around the 29th, the Tohoku Pacific side and Kanto region will be affected by a low pressure system, and there is a possibility of rain mainly in coastal areas. Around the 31st, a low pressure system will approach Japan, and it is likely to rain in some places, especially on the Sea of Japan side. It will be sunny in many places from western Japan to the Pacific side of eastern Japan. Be careful when handling sources of fire as the air will be dry.

Temperatures will plummet in northern Japan tomorrow, with snow and rain on the Sea of ??Japan side! It rained nationwide from the 24th (Wednesday) to the 25th (Thursday).

2025/12/21 17:57

There is a well-developed low pressure system in the Sea of Okhotsk, and a front is extending through Hokkaido and the Sea of Japan into the San'in region.
There is also a low pressure system in the south of Shikoku, moving northeast.
On the other hand, there is a high pressure system over the continent that is protruding to the east.

Currently, there are places in the mountains from Hokkaido to the Kinki region where it is raining and snowing.
Today, due to the influence of air from the south blowing into the front, it became unseasonably warm and rain fell over a wide area.



Tomorrow, the 22nd (Monday), there will be a temporary winter-like atmospheric pressure pattern, and cold air will move southward mainly in northern Japan, causing rain and snow on the Sea of Japan side.
On the Pacific side, it will be sunny in many places, but in Kanto and Shizuoka prefectures, clouds tend to spread around the coasts, and there are likely to be some places where it will rain until morning.

Then, on the 23rd (Tuesday), high pressure will pass over Japan, so it will be sunny in many places.






On the 24th (Wednesday), a low pressure system and front will pass near Japan, causing bad weather across the country once again.
Due to the effects of low pressure and warm air blowing in from the front, there will be some places in Hokkaido where it will not snow, and there will be rain over a wide area on Christmas Eve.

Today, the 21st (Sunday), rain over a wide area

2025/12/21 07:49

High pressure is located far east of Japan and is moving east-northeast.
Meanwhile, a low pressure system is located in the Sea of Okhotsk, and a front is extending into the Sea of Japan.
There is also a low pressure system south of Kyushu, which is moving east-northeast.

Today, a cold front is expected to advance toward the Sea of Japan side of eastern Japan, and in the evening it is expected to combine with a low pressure system accompanied by a front that will advance east-northeast along the southern coast of Honshu.
For this reason, it is expected to rain across the country, and umbrellas will likely come in handy.





It will rain in the Kyushu and Chugoku regions in the morning, but it is expected to gradually improve in the afternoon. Rain will remain in the Shikoku region until the afternoon.
It is expected to rain until night in the Kinki, Tokai, Hokuriku, Kanto, and Tohoku regions.
There is also a risk of heavy rain with localized thunderstorms.
Please be careful.



Also, the temperature is expected to be high for this time of year during the day.
In areas with heavy snowfall, please be careful of melting and falling snow.

The winter-like atmospheric pressure pattern does not last long, and there are periodic weather changes. There is a noticeable tendency for less rain on the Pacific side (weather summary from December 7th to December 13th, 2025)

2025/12/20 08:20

This is a summary of the weather for this period (December 7th to December 13th, 2025).

#Weather summary for this period (December 7th to December 13th)
The average temperature was higher than normal in many places in western Japan, Okinawa, and Amami due to the influence of warm air moving south toward a low pressure system. Although there were some places in northern and eastern Japan that were slightly below normal due to the influence of cold air in the upper atmosphere, many areas remained close to normal.

Precipitation was above normal in northern Japan, where there was a lot of snow and rain due to the effects of low pressure systems, fronts, and pressure troughs, and Akita recorded about twice the normal precipitation. Eastern and western Japan were easily covered by high-pressure systems, so there were few rainy days, resulting in a noticeable trend of low rainfall, well below normal.

Northern Japan, which is susceptible to the effects of low pressure and fronts, had many rainy and snowy days, resulting in sunshine hours below normal. Eastern and western Japan were easily covered by high pressure and had many sunny days, so temperatures in many places were above normal. On the Sea of Japan side, some places, such as Kanazawa and Matsue, had temperatures well above normal.



[About this period's weather]
#Characteristics of pressure distribution
On the 7th, the center of high pressure moved east near the southern coast of Honshu. A low-pressure system moved eastward near Sakhalin and off the coast of Sanriku, creating a pressure trough in northern Japan. On the 8th, a low pressure system accompanied by a front passed through the Sea of Japan and Hokkaido while developing. On the 9th, a low pressure system reached the waters near the Chishima Islands, and another low pressure system formed on the front over the sea east of Japan. High pressure is protruding from the continent, forming a winter-like pressure pattern around Honshu. On the 10th, an anticyclone protruded from the continent, and the center of the anticyclone passed near Honshu. The winter-like pressure distribution has loosened. On the 11th, the center of the high pressure system moved away to the east of Japan, a low pressure system accompanied by a front moved eastward in the Sea of Japan, and a cold front moved southward near Honshu. On the 12th, the low pressure system continued to develop and moved northeast through the waters near the Chishima Islands. The area around Honshu experienced a strong winter-like atmospheric pressure pattern, and extremely cold air in the upper atmosphere flowed into the area. On the 13th, the area around Honshu was widely covered by high pressure, but two low pressure systems formed near the East China Sea and the Nansei Islands due to pressure troughs behind the high pressure system, and each moved eastward.

#Precipitation
On the 7th, due to the influence of a trough in atmospheric pressure, rain and thunderstorms occurred from the Sea of Japan side of northern Japan to Hokuriku. On the 8th, rain fell over a wide area from northern Japan to Hokuriku as a low pressure system and front passed. In the afternoon, as the cold air moved south, snow became heavier in some parts of Hokkaido, with 23 cm of snowfall recorded in 3 hours in Utoro, Shari Town. On the 9th, due to a winter-like atmospheric pressure pattern, there were places in northern Japan on the Sea of Japan side that experienced heavy snowfall. 14 cm of snow fell in 3 hours in Hamakishibetsu, Soya region, Hokkaido. On the 10th, rain and snow fell from the Sea of Japan side of northern Japan to the Hokuriku region. The Sakishima Islands were affected by the humid air, with some places on Yonaguni Island experiencing heavy rain. On the 11th, due to the influence of a low-pressure system moving over the Sea of Japan and a front moving south, rain began to rain mainly from northern Japan to western Japan on the Sea of Japan side. Heavy rain was observed in Arikawa, Nagasaki Prefecture, and Fujisato, Akita Prefecture. On the 12th, a strong winter-like atmospheric pressure pattern developed around Honshu, and heavy snow fell in northern Japan. In Komanoyu, Miyagi Prefecture, snowfall exceeded 50 cm in 24 hours, and a heavy snow warning was issued in Miyagi Prefecture. On the 13th, due to the influence of a low pressure system, it rained over a wide area from Kyushu to Kanto by night. In the Kanto region, snow fell along the mountains and in some inland areas at night, and the first snow was observed in Kumagaya, Saitama Prefecture.

#Temperature
On the 7th, the sun reached eastern and western Japan, which was covered by high pressure, and the temperature rose. In some places in Kyushu, the temperature was comparable to early November. On the 8th, temperatures rose in eastern and western Japan due to the influence of warm air moving south toward a low pressure system. The highest temperature in central Tokyo was 17.6c, about the same as mid-November. On the 9th, cold air flowed into the sky, and temperatures across the country dropped from the previous day. Temperatures were lower than normal in northern Japan and Hokuriku. On the 10th, Hokkaido experienced a severe cold morning, with Rikubetsu in the Tokachi region recording a minimum temperature of -18.8c, the lowest temperature in the country this season (as of December 10th). On the 11th, the temperature in Hokkaido was comparable to midwinter. On the other hand, in many places from Tohoku to Kyushu, temperatures were similar to November due to warm air blowing toward the low pressure system. On the 12th, with strong cold air moving south. The whole country is in the middle of winter. The number of midwinter observation points is 228, the highest number this season (as of December 12). On the 13th, the cold air moved northward, but the cold air from the northeast caused temperatures to drop in the Kanto region. The highest temperature in central Tokyo was 8.9 degrees Celsius, just shy of 10 degrees Celsius.