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.

Weather on Saturday and Sunday: Unusually warm for this time of year, with widespread rain continuing into tomorrow, the 21st (Sunday). Be careful of avalanches in areas with heavy snowfall.

2025/12/20 08:11

Today, the 20th (Saturday), the center of high pressure will move away to the east of Japan, and low pressure and a front will approach Honshu from the west. A new low pressure system is expected to form near Kyushu and Okinawa by tonight and move near Honshu.



Today, the 20th (Saturday), there will be many places in Hokkaido that will experience rain instead of snow. The maximum daytime temperature will be significantly higher than yesterday on the 19th, and the expected maximum temperature in Sapporo will be 11c, which is similar to early November. In Tohoku, there are many places where it is sunny during the day, but in areas along the Sea of Japan such as Aomori and Akita prefectures, it is likely to start raining in the evening as the front approaches.

The weather in the Kanto-Koshin region will go downhill from this afternoon. There are some places in the Tokai region where it will rain from the morning, but it will probably stop in the afternoon. The Hokuriku region will be relatively calm and sunny, with some places experiencing unseasonably warm weather. The expected maximum temperature in Kanazawa is 20c, which is expected to be as warm as October.

In western Japan, the weather will turn downhill in Kyushu, Chugoku, and Shikoku tonight. In the Nansei Islands, where there is a valley of atmospheric pressure, rain clouds are likely to develop due to the influence of moist air, and there will be places where there will be heavy rain accompanied by thunder.
In Okinawa Main Island and the Sakishima Islands, total rainfall will reach nearly 100 mm in many places by tomorrow, and there is a risk of warning-level heavy rain. Please be careful of landslides and rising river waters.




A cold front associated with a low pressure system is expected to largely pass near Honshu tomorrow, the 21st (Sunday). It will rain in Hokkaido and northern Kyushu from dawn until dawn, and the front will gradually move south, and the area of rain will likely spread from northern Japan to Kyushu. In many places in western Japan, the rain will stop in the afternoon, but in northern and eastern Japan, there are likely to be some places where the rain will pick up in the evening, accompanied by thunder.

From tomorrow, the 21st, temperatures will rise in many areas and it will rain, leading to snow melting in areas with heavy snowfall. Please be careful of landslides caused by melting snow, flooding of roads, avalanches, and falling snow from roofs.

Unusually warm weather for December. Unusually warm even at the end of the year [Temperature for 2 weeks]

2025/12/19 14:58

Today, the 19th (Friday), the area around Honshu is covered in high pressure and many places are sunny.

The highest temperature until 2pm today is
Makurazaki City, Kagoshima Prefecture 20.5c
Miyazaki City 19.5c
Fukuoka City 17.6c
Osaka City It is 14.1c
Kanazawa City 14.6c
Central Tokyo 11.2c
, and in Kyushu it is around 20c, which is as warm as early to mid-November.

Temperatures have risen to around 15c in the Kinki and Hokuriku regions,
making it unusually warm for December.

Over the weekend, even warmer air (warm air similar to October) will flow into the low pressure system, and temperatures will rise in many places.



Tomorrow, the 20th (Saturday), rain is expected to spread from the west due to the influence of moist air circulating around the edge of a high-pressure system and a low-pressure system with a front moving toward the Sea of Japan and the Nansei Islands.

There are likely to be places on the Pacific side of western and eastern Japan where there will be heavy rain accompanied by thunder.

Even in Hokkaido, there are many places where it rains instead of snow.
As the snow continues to melt, please be careful of deterioration of road conditions and avalanches due to melting snow.

Due to the warm weather, temperatures are high in various places even with rain.
The predicted maximum temperature for tomorrow, the 20th (Saturday) is
Sapporo City 12c (same as early November)
Sendai City 15c (same as late November)
Niigata City 16c (1 Kanazawa City: 21c (same as late October)
Central Tokyo: 13c (same as early December) / Osaka City: 19c (same as mid-November)
Fukuoka City: 21c (same as late October)


From the 21st (Sunday) to the 22nd (Monday), cold air is expected to gradually flow in,
temperatures are expected to drop from Hokkaido and other areas.
However, that seems to be temporary.




Looking at the temperatures for two weeks in various places (from the past week to December 30th), warm air is expected to flow in again from Christmas Eve on the 24th (Wednesday), and
temperatures are expected to rise nationwide.

Furthermore, the temperature is expected to be either higher than normal or significantly higher nationwide until around the 30th of the year with
orange and red levels.

After a low pressure system or front passes and rain falls,
cold air will temporarily flow in, but
will soon be covered by warm air, and high temperatures are expected to continue.

The unusually warm weather is expected to continue into the end of the year, so it may not be the end of the year.

The cold air will continue to flow in for several days at the beginning of the new year, and
cold waves may arrive.

If you are returning home or going out during the year-end and New Year holidays, please check the latest weather information.



Finally, the weekly weather.
From now on, there will be many rainy days even on the Pacific side, which is unusual for December.

There are weather conditions that are suitable and unsuitable for spring cleaning, so
Please check the weather forecast frequently as you proceed with spring cleaning.

Over the weekend, the weather will deteriorate widely, with rain and wind increasing in some places. Rain again from Christmas Eve to Christmas. High temperature trend. Warning for snow melting [Weekly weather forecast]

2025/12/19 12:19

Weekly Weather Forecast
#The weather is expected to deteriorate widely over the weekend, with strong winds and rain in some places
#Christmas Eve - Christmas Rain again
#Weekend - Christmas High temperature trend, snow melting warning



#The weather is expected to deteriorate widely over the weekend, with rain and wind increasing in some places
From tomorrow the 20th (Saturday) to the 21st (Sunday), a low pressure system and a front will pass through the Japanese archipelago, causing widespread weather disturbances.
Tomorrow, the 20th (Saturday), a low pressure system will move from the vicinity of Primorye to the Sea of Okhotsk, and a cold front will extend into northern Japan.
In addition, another low pressure front is expected to move from the East China Sea to the Tsushima Strait.
Furthermore, the front extending near the Sakishima Islands will move eastward over the Nansei Islands, and a low pressure system will form above the front at night.
It is expected to rain in some places in Okinawa, Kyushu, Kinki and Tokai from the morning.
It has been raining since morning on the Sea of Japan side of Hokkaido, and there will be places in central Hokkaido where it will snow.
It will start raining early in the afternoon in Chugoku and the Kanto-Koshin region, and in the evening it is expected to rain in Shikoku and northern Tohoku.



The next day, on the 21st (Sunday), a low pressure system in the Tsushima Strait will pass through the Sea of Japan and move toward the waters near the Chishima Islands, and a cold front extending from this low pressure system will pass near Honshu.
The low pressure area near the Nansei Islands is expected to move from the south of Japan to the east of Japan.
It is forecast to rain and snow. As warm air flows in, rain is expected to occur in many places in Hokkaido, but on the 21st (Sunday), it is expected to gradually turn to snow from northern Hokkaido.
In the morning, it will rain in Okinawa, Shikoku, Chugoku, northern Kinki, the Kanto coast, and parts of Hokuriku.In the afternoon, the rain will stop in more places in Okinawa and western Japan, and there will be some places in eastern Japan and Tohoku.
It is expected to gradually stop in more places at night.
In Hokkaido, there will be places in central and northern Hokkaido where the snow will gradually turn to snow.
Atmospheric conditions are expected to become unstable as warm, humid air flows toward low pressure and fronts.
Be careful of sudden heavy rain, lightning, gusts of wind, and hail.
Also, southerly winds are expected to strengthen along the Pacific coast.

#Christmas Eve ~ Christmas Rain Again
On Christmas Eve, the 24th (Wednesday), a low pressure system will approach again and the weather will turn downhill.
It is expected to rain over a wide area into the 25th (Thursday) of Christmas.
Please be careful when going out.



Unusual for this time of year, the weather will deteriorate in short intervals even on the Pacific side.
When preparing for the year-end and New Year holidays, such as cleaning, please check the weekly weather forecast and plan accordingly.





#Weekend - Christmas High Temperatures Warning for snow melting
On the weekend, temperatures are expected to be much higher than normal as warm air will flow in from the south towards the low pressure system and front.
The predicted maximum temperature for Saturday the 20th is 21c in Fukuoka and Kanazawa, 19c in Osaka, 15c in Nagoya and Sendai, 13c in central Tokyo, and 12c in Sapporo.
The predicted maximum temperature on the 21st (Sunday) is 16c in Fukuoka, Osaka, Nagoya, and central Tokyo, 15c in Niigata, 17c in Sendai, and 9c in Sapporo.
After that, there will be a tendency for high temperatures in many places until around Christmas.
In snowy areas, be careful of damage from melting snow.

Temperatures are rising in western and northern Japan compared to yesterday; areas with heavy snowfall should be careful about melting snow

2025/12/19 07:24

Kesa is widely covered by high pressure near Japan, and as radiative cooling has strengthened, it has become increasingly cold over a wide area.
In Rikubetsu, Rikubetsu Town, Hokkaido, the lowest temperature in Japan this season was observed at -26.0c, making it extremely cold.



It is expected that there will be many places where the sun will reach during the day. As warm air flows in from the south, there are many places in western Japan and Hokuriku where the temperature will rise compared to the previous day, with daytime temperatures exceeding 15c in many places, making it as sunny as mid-to-late November.

Northern Japan is also expected to be less cold as the cold air recedes. There is a risk of snow melting in snowy areas during the day. Be careful of avalanches and snow falling from the roof.

Even though there is sunshine in the Kanto region, the wind blows from the north, so the forecast is for many places to be slightly lower than yesterday. The temperature will be typical for this time of year, so please take measures to protect yourself from the cold during the day.

The predicted maximum temperature is Sapporo 2c, Sendai 11c, Tokyo 12c, Nagoya 15c, Kanazawa 15c, Osaka 16c, Kochi 17c, and Fukuoka 19c.
There is a large difference in temperature between morning and evening and daytime in various places, so please be careful when choosing clothing.

Weather for today, the 19th (Friday): Sunshine will reach a wide area; watch out for showers on the Pacific side of western Japan at night

2025/12/19 06:12

Today, the 19th (Friday), the area around Japan will be covered in high pressure. The sun is expected to reach many places, especially in the morning, but areas such as the Pacific coast of western Japan and Hokkaido will need to be careful about changes in the sky.



In northern Japan, clouds will likely spread over the Japan Sea side of Hokkaido and Tohoku. Rain and snow will gradually increase in the evening, so please prepare rain gear before going out. It will be sunny in many places on the Pacific side.

Clouds will gradually spread over the Kanto region, but it will be sunny during the day.
Tokai, Hokuriku, and western Japan will be covered by high pressure, so it is expected that many places will be sunny mainly in the morning. However, as moist air flows in in the afternoon, clouds will gradually spread on the Pacific side, and there will be some showers at night. It's safe to have a folding umbrella when going out.

Before Christmas to New Year's period, it's quite high temperature, then it suddenly gets cold Lots of rain on the Pacific side, same or less snowfall on the Sea of ??Japan side

2025/12/18 15:47

Today, the 18th (Thursday), the Japan Meteorological Agency announced the weather outlook for the next month (12/20 to 1/19).

The winter-like atmospheric pressure pattern will not last long, and temperatures are expected to rise considerably in northern and western Japan from before Christmas until the end of the year.
Also, the Pacific side of northern and eastern Japan, which is susceptible to the effects of low pressure, will experience higher than normal precipitation.



#Winter-type pressure pattern won't last long
Looking ahead, the average sea level pressure for the month is predicted to be that the Aleutian Low pressure system will be weaker than normal, and the Siberian High pressure system will also be weaker in the area near Japan, so the winter-type pressure pattern near Japan will not last long.
It is expected that there will be periods when the Pacific side of northern and eastern Japan is susceptible to the effects of low pressure.
Temperatures at an altitude of approximately 1,500 meters are predicted to be higher than normal, mainly in northern, eastern, and western Japan.



#Significantly high temperature before Christmas to New Year's period Snowfall will be average/low/not affected by cold air, so temperatures over the next month will be high in northern, eastern, and western Japan, and at or above normal in Okinawa and Amami.
In particular, temperatures are expected to rise considerably in northern, eastern, and western Japan from December 20th to January 2nd of next year, before Christmas and into the New Year period.
However, during events and events where you spend a long time outdoors, such as Christmas, illuminations, New Year's Eve, and New Year's visit, please be careful and take measures to protect yourself from the cold.
After January 3, the temperature will be similar to normal, and it will feel like it has suddenly become colder, so please take care of your health.
Also, the amount of snowfall over the next month will be at or below normal on the Sea of Japan side of northern and eastern Japan.
In areas where there is a lot of snow, be careful of damage from melting snow.



#Pacific side of northern and eastern Japan, susceptible to the effects of low pressure There will be periods of high precipitation
that are susceptible to low pressure, so precipitation over the next month will be heavy on the Pacific side of northern and eastern Japan, and at or above normal on the Pacific side of western Japan.
The amount of sunshine in the coming month will be low on the Pacific side of northern and eastern Japan, and will be at or below normal on the Pacific side of western Japan.
This time of year, the Pacific side tends to be dry, but this year the air will be moist due to the heavy rain.
The weather is expected to change in a short period of time on the Pacific side as well, so please check the weekly weather forecast and plan accordingly when preparing for the year-end and New Year holidays, such as cleaning.