From today 26th (Sunday) to tomorrow 27th (Monday), rain will occur mainly on the Pacific side. Be careful of thunderstorms in western Japan.

2026/04/26 12:24

From today, the 26th (Sunday) to tomorrow, the 27th (Monday), rain is expected to fall mainly from the Pacific side of western to eastern Japan due to the influence of a front and low pressure system off the southern coast of Japan.
Today, the 26th (Sunday), 48.5 mm of heavy rain was observed in the hour until 4:56 am on Miyako Island in Miyakojima City, Okinawa Prefecture, due to the influence of the front.
Atmospheric conditions are expected to become unstable in Okinawa, Kyushu, and Kochi prefectures. Be careful of lightning, tornadoes, strong gusts of wind, and sudden heavy rain.



Currently, it is raining in some places in Okinawa Prefecture, Kyushu, Chugoku, and Shikoku regions.
After this, the low pressure system south of Kyushu is expected to move south of Shikoku into tonight. After that, the low pressure system will move eastward south of Honshu and east of Japan tomorrow, the 27th (Monday).



The area of rain is expected to gradually shift from western Japan to eastern Japan.
Today, the 26th (Sunday), it is expected to start raining in the Kinki region in the evening, in the Tokai region at night, and in some places in the Kanto region it will start raining late at night.
Tomorrow, the 27th (Monday), it will rain mainly in eastern Japan, and there will be some places in the southern part of Tohoku. Rain may peak in the Tokai and Kanto regions tomorrow during commuter and school hours. You will need a sturdy umbrella when going out.




Warm and humid air is expected to flow towards the front and low pressure system. In addition, cold air with temperatures below -15 degrees flows into the Kyushu region at an altitude of approximately 5,500 meters, making the atmospheric conditions extremely unstable.

Please be careful of thunderstorms, tornadoes, violent gusts, and sudden heavy rain in the Daitojima region of Okinawa Prefecture until late at night today, the 26th (Sunday), in northern and southern Kyushu until early evening, in the Amami region into the evening, and in Kochi Prefecture into the late evening. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.

In addition, winds will become stronger, especially in coastal areas. There is a possibility of heavy rain, so please be careful when going out.

In the first half of Golden Week, be careful of temperature differences; choosing clothes is key.

2026/04/26 12:24

Golden Week has begun, and many of you may have taken a day off from yesterday, the 25th (Saturday). This year's Golden Week weather tends to change periodically, so you need to be careful about how it rains. Please check the latest weather forecast frequently before heading out.



While today, the 26th (Sunday), will be as warm as early June in Sapporo, the Kanto region is expected to be as cold as normal, and tomorrow, the 27th (Monday), to be as chilly as early April.

However, on the 28th (Tuesday), temperatures are expected to change from the Kanto region to western Japan, approaching a summer day. There is a big difference in temperature from the previous day, and if you choose the wrong clothes, you may end up drenched in sweat. Furthermore, the temperature is expected to drop again in the second half of the week, making it likely to be a week with large temperature differences.





During periods of large temperature difference, it is convenient to wear thin layers and clothes that are easy to adjust. Please check the daily temperature forecast and choose clothing that is comfortable for you.

With the change of seasons, it is also a time when it is easy to get sick. Please be careful about the temperature difference and have a fun Golden Week.

Weekly weather The weather changes every few days It often rains during the first half of Golden Week

2026/04/25 07:04

Some people may start Golden Week from today, the 25th (Saturday). The weather in the future will be cyclical, with sunny days alternating with rainy days.



Tomorrow, the 26th (Sun), there will be rain mainly in western Japan due to the influence of a low pressure system. On the Pacific side, the rain is likely to become stronger and there will be places where there will be heavy rain accompanied by thunder. Please be careful about how it rains.
The low pressure system will move along the southern coast of Honshu, and the area of rain will spread to the Pacific side of eastern Japan until the beginning of the week, the 27th (Monday).

On the 28th (Tuesday), many places in western and eastern Japan will be covered in high pressure and it will be sunny. In northern Japan, the weather is likely to deteriorate and bring rain in some places due to the effects of the low pressure system. In areas where the shaking was strong due to the Sanriku-oki Earthquake, there are places where the ground is loose and the risk of landslides may increase rapidly even with a small amount of rain, so please be careful.

On the 29th (Wednesday) Showa Day, a frontal low pressure system is expected to approach from the west. The low-pressure system is expected to develop and move along the southern coast of Honshu, and the rain and winds will become stronger around the 30th, mainly on the Pacific side of western and eastern Japan.

There is currently a wide range of forecasts regarding the timing, extent, and strength of rain, and there is uncertainty. When going out during the holidays, please be sure to check the latest weather information.

From now on, the temperature will rise and fall as the weather changes. On rainy days, there are some places where the maximum temperature is less than 20 C, and on sunny days, it is likely to be over 25 C. Please dress appropriately according to the weather that day.

One-month forecast: The extreme heat will subside for a while, with many cloudy and rainy days expected during Golden Week

2026/04/24 21:36

On the 23rd (Thursday), the Japan Meteorological Agency announced the latest one-month forecast, which shows the weather outlook for the next month.



According to the forecast results of the forecast model, there is an anticyclone to the east of Japan, and the area of high pressure is expected to extend to the vicinity of Japan. Northern Japan will likely be covered by high pressure. In addition, a weak pressure trough is expected in the south of Japan, and it is expected that moist air will easily enter the Pacific side of western and eastern Japan. The temperature at an altitude of approximately 1,500 meters will be higher than normal nationwide, and it will likely be covered by warm air.



The average temperature for the next month will tend to be higher than normal nationwide across the country. However, from the end of April to the beginning of May, the probability that the average temperature will be around normal and the probability that it will be higher than normal are about the same, and the chances of extreme heat or cold are low. During Golden Week, the temperature is likely to be relatively comfortable.
From mid-May onwards, it will become hotter nationwide, so it will be essential to take precautions against heatstroke, such as staying hydrated and taking adequate breaks.



The weather will change every few days. Precipitation for the month is expected to be at normal levels nationwide, but western and eastern Japan is likely to experience many cloudy and rainy days, especially on the Pacific coast. During the Golden Week period, low pressure systems and fronts often pass from the west, and around the 30th, a developed low pressure system may approach and bring widespread rain to the Pacific side of western and eastern Japan. Also, rain is likely to increase in many places for the next 3 to 4 days due to the effects of low pressure and fronts.

Currently, forecasts vary widely, and there is great uncertainty regarding the timing, extent, and strength of rain, but please be sure to check the latest weather information before going out.

[Kanto/GW weather] It rains every 3 days, and if it's sunny it's summer, when is the best time to go out (Commentary: Weather forecaster Junko Miyake)

2026/04/24 14:48

Golden Week may start as early as tomorrow for some people.
Let's take a look at the key points regarding the weather during the holidays in the Kanto region.
The weather changes periodically, and there are likely to be days when the rain and wind become stronger.
It looks like the temperature difference will be severe again.
Compared to previous years, this year's Golden Week is characterized by rapidly changing weather.



First, let's look at the weather map from tomorrow.
Tomorrow, the 25th (Saturday), will be covered by a mobile high pressure system.
In the Kanto region, there are many places where it is mild and sunny, but
the high pressure is slightly biased to the north, so it is likely that there will be periods of cloudy weather on the Pacific side and coastal areas of the Kanto region,
where moist air tends to flow in.



The next day, on the 26th (Sunday), a low pressure system and front will approach from the west.
It looks like clouds will gradually spread in the Kanto region.
On the 21st (Monday), a low pressure system will develop as it passes through the Kanto region.
There will likely be periods of strong rain and wind.



Let's take a look at the forecast weather map for the 28th (Tuesday) onwards.
On the 28th (Tuesday), a low pressure system will approach northern Japan, so
it will rain in northern Japan, but there will be many sunny spells in the Kanto region.
29th (Wednesday) Showa Day will also be covered by high pressure from the north, so it looks like there will be many sunny spells.

From the 30th (Thursday) to May 1st (Friday), the
low pressure system is expected to develop considerably and pass near Honshu.
For this reason, there is a possibility that the weather in the Kanto region will be a little rough with strong rain and wind.
There is a possibility that the lowest pressure will develop during the holidays, so please check the latest forecast for the daily weather from the 30th onwards.

On the 2nd (Saturday), there will be many areas covered in high pressure that will be sunny.
This Saturday, the 2nd, it looks like there will be many parts of the country that will be mildly sunny.
On the 3rd (Sunday), a low pressure front will approach from the west again.
As you can see, the weather is changing rapidly during this year's Golden Week.



Let's take a look at the forecast for the next 10 days.

It will be sunny in many places tomorrow and the following Saturday and Sunday.
However, it looks like it will be quite cold in the mornings and evenings due to the cold air in the sky.
Please stay warm.

There are rain marks in the Kanto region every three days, on the 27th (Monday), the 30th (Thursday), and May 3rd (Sunday).

The weather changes periodically, and the temperature changes are likely to be quite large.
There are sunny days when the temperature rises to around 25 degrees, but there are also days when it rains and it feels quite chilly, reaching around 18 degrees.

Please pay close attention to the daily temperature differences as well as the temperature differences within the day.



It is said that if the temperature changes by 5 degrees, you will change one outfit.
When the weather is sunny during the day, I think I can wear short sleeves, but
Mornings and evenings can get a bit chilly, and there are days when I need a cardigan or trench coat.
Please pay attention to the relationship between temperature and clothing.


During the day, the temperature can reach up to 25 degrees, so you may be able to wear short sleeves, but
Mornings and evenings can get a bit chilly, so you'll need a cardigan or trench coat.
Spend this Golden Week wearing clothes that are easy to put on and take off.

Tomorrow, the 25th (Saturday) is a chance to dry outside, and the 26th (Sunday) the weather is going downhill from the west.

2026/04/24 12:37

Tomorrow, the 25th (Saturday), will be covered in high pressure and it will be sunny in many parts of the country. In the morning, rain may linger in some areas on the Pacific side of Kyushu and Shikoku, but the weather is expected to improve during the day and the sun will shine. Especially in eastern Japan, the sky will be blue in the morning, making it a perfect day to dry your laundry.

The temperature is about average, and you can feel the refreshing air typical of this time of year. The crisp air makes it easy to dry large items of laundry such as thick clothes, sheets, and towel blankets. If you want to do all your laundry on the weekend, we recommend doing it on Saturday the 25th.



On the other hand, on the 26th (Sunday), the weather will be downhill from the west. As the low pressure system approaches Kyushu, clouds are expected to spread over Kyushu from the morning, and rain is expected to gradually begin. The area of rain will spread eastward as time passes, and it will also rain in Chugoku, Shikoku, and Kinki in the afternoon. The weather in the Kanto region remains cloudy, but the chance of rain increases from the evening onwards.

If you are planning to go outdoors this weekend, please check the latest weather forecast. It's a good idea to bring rain gear just in case.

Tomorrow, the 25th (Saturday) is a chance to dry outside, and the 26th (Sunday) the weather is going downhill from the west.

2026/04/24 12:37

Tomorrow, the 25th (Saturday), will be covered in high pressure and it will be sunny in many parts of the country. In the morning, rain may linger in some areas on the Pacific side of Kyushu and Shikoku, but the weather is expected to improve during the day and the sun will shine. Especially in eastern Japan, the sky will be blue in the morning, making it a perfect day to dry your laundry.

The temperature is about average, and you can feel the refreshing air typical of this time of year. The crisp air makes it easy to dry large items of laundry such as thick clothes, sheets, and towel blankets. If you want to do all your laundry on the weekend, we recommend doing it on Saturday the 25th.



On the other hand, on the 26th (Sunday), the weather will be downhill from the west. As the low pressure system approaches Kyushu, clouds are expected to spread over Kyushu from the morning, and rain is expected to gradually begin. The area of rain will spread eastward as time passes, and it will also rain in Chugoku, Shikoku, and Kinki in the afternoon. The weather in the Kanto region remains cloudy, but the chance of rain increases from the evening onwards.

If you are planning to go outdoors this weekend, please check the latest weather forecast. It's a good idea to bring rain gear just in case.

Weather for today, the 24th (Friday): Sunshine returns widely; watch out for changes in the sky in Hokkaido

2026/04/24 06:23

Today, the 24th (Friday), the low pressure system that brought widespread rain yesterday (23rd) will move away to the east, and sunshine will return to many areas. However, you need to be careful about weather changes in Hokkaido.



Atmospheric conditions in Hokkaido are unstable due to the influence of cold air above. Even if the sun shines during the day, there is a risk of rain clouds forming locally, so please be careful of sudden strong rain or thunderstorms. It will be safe to have rain gear when you go out.

Sunlight will reach a wide area in Tohoku, Hokuriku, and northern Kyushu. During the day, the temperature in many places is higher than the day before, which is typical of this time of year. There is a possibility of showers in parts of the Pacific Ocean such as Kinki and Shikoku at night, so if you will be returning home late, it is a good idea to bring a foldable umbrella.

There will be some places in the Kanto region where the rain will remain until morning. Although there will be a lot of clouds in the morning, the sunshine is likely to return in the afternoon. Please be careful not to leave your rain gear behind when you return.

In southern Kyushu and Okinawa, clouds will likely spread, and there will be some showers. Please bring rain gear when going out.

Typhoon No. 4 moves north from near the Mariana Islands to the sea near Ogasawara. A wide area from the south of Japan to the east of Japan [Marine summary (April 12-18, 2026)]

2026/04/24 01:18

As Typhoon No. 4 moved northward near the Mariana Islands and advanced into the waters near Ogasawara, waves gradually increased in the waters near Ogasawara from the 15th onwards, and from the 17th to the 18th they were strong over a wide area from the south of Japan to the east of Japan.
The following is a summary of the ocean (April 12-18, 2026).



#Pressure distribution and waves
From the 12th to the 14th, a developed low pressure system moved northeast through the Sea of Okhotsk. The pressure gradient around the low pressure area was large, and the waves were rising. On the 12th, there was a barge near the Mamiya Strait, and on the 13th and 14th, it was barged in the Sea of Okhotsk.
15-17 days ago A low-pressure system accompanied by a front moved eastward along the southern coast of Honshu and eastward into Japan. From the 14th to the 18th, Typhoon No. 4 moved northward near the Mariana Islands and moved into the waters near Ogasawara. On the 15th, swells from the typhoon arrived, and waves rose in the waters near Ogasawara. On the 16th, due to the influence of a low pressure system moving along the southern coast of Japan and swells originating from the typhoon, waves rose in the south of Japan, and from the 17th to the 18th, they broke out over a wide area from south to east of Japan.



#Sea surface temperature
Sea surface temperatures in the northern and central regions of Japan continued to be higher than normal in the northern and central regions, and significantly higher than normal in the western regions. Temperatures on the continent were up to 4 C higher than normal.
The East China Sea and the waters near the Nansei Islands were slightly higher than normal.
South of Japan, sea areas continued to be slightly higher than normal.
From the Tokai coast to the south of the Kanto region, the sea area that is slightly lower than normal has shrunk.
To the east of Kanto, temperatures were higher than normal, with temperatures up to 3 C higher.
Off the coast of Sanriku, the sea area continued to be lower than normal, with temperatures up to 4c lower.
The waters around Hokkaido continued to be at normal levels.

3 days without sunshine in spring, changeable weather in the first half of Golden Week

2026/04/23 12:36

There is a saying that goes, "There are no three days of sunshine in spring." As this phrase suggests, the weather in the current season is characterized by being extremely changeable from April to May.

A typical spring weather pattern is expected to continue through the second half of April, with periodic passage of low pressure systems and fronts, and periods of sunshine and rain alternating every few days.



What I'm curious about is the weather during Golden Week. Unfortunately, it is unlikely that we will have stable sunny skies during this year's holidays. At the beginning of the holidays at the end of April, low pressure systems are likely to pass near Honshu, leading to short periods of sunshine and rain. There are days when the sky is covered with high pressure and the weather is calm and sunny, but as the front approaches, the weather can suddenly deteriorate and the rain may become heavier.



Those who plan to spend time in nature such as the mountains or the sea should be especially careful about sudden changes in the weather. In spring, atmospheric conditions tend to become unstable, and thunderclouds can suddenly form even on sunny days. Conditions can change dramatically, such as when visibility suddenly worsens in the mountains or when the wind gets stronger and the waves get higher at sea. For your safety, please check weather information frequently and take reasonable precautions.