Weather forecast for tomorrow, the 29th (Monday): Watch out for sudden rain and thunderstorms in the afternoon, especially in the inland areas of eastern Japan and Hokkaido, and along the mountains.

2026/06/28 20:38

Tomorrow, the 29th (Monday), the rainy season front will be stationary in the south of Honshu. Rain is likely to fall in Okinawa and Amami, which are close to the rainy season front, and southern Kyushu and the Amami region should be careful of heavy rain accompanied by thunder in the morning.



Western Japan is expected to be covered in high pressure and have many sunny days. In eastern Japan, clouds tend to spread around the Kanto region, and there are likely to be some areas with showers due to the influence of local fronts. In other areas, the weather forecast shows clear skies, but there is a possibility that the weather could change suddenly in the afternoon, especially in the inland areas and mountains of eastern Japan and Hokkaido.



The effects of warm, humid air brought in by typhoons and the seasonal rain front will remain in areas around Honshu, and strong cold air is expected to flow into the skies over northern Japan. As a result, atmospheric conditions become unstable and there is a high probability that thunderclouds will form and develop in the afternoon.
The Koshin region and Hokkaido are prone to sudden rain and thunderstorms, and in the Koshin region, please be careful of heavy rain accompanied by thunder. It is likely that there will be localized rain and thunderstorms in the afternoon, even in parts of the southern Tohoku region, northern Kanto region, and inland and mountainous areas of the Tokai region. Even if it's not raining when you go out, it's a good idea to carry a folding umbrella.

The rainy season front is stagnant. Okinawa region should be careful of heavy rain today, the 28th. Heavy rain is expected in southern Kyushu and Amami regions into tomorrow 29th.

2026/06/28 12:32

Today, the 28th (Sunday), the rainy season front is extending from the continent to the south of Japan, passing near the Nansei Islands. The rainy season front is expected to slowly move northward into tomorrow, the 29th (Monday).

Please be careful of heavy rain caused by the rainy season front in the Okinawa region today, the 28th (Sunday). In the southern Kyushu and Amami regions, there is a risk of heavy rain into tomorrow, the 29th (Monday), so caution is advised.



This morning, 39.5 mm of heavy rain was observed in the hour up to 8:36 on Iriomote Island in Taketomi Town, Yaeyama District, Okinawa Prefecture, and 33.0 mm in the hour up to 7:24 in Kitahara, Kumejima Town, Shimajiri District, Okinawa Prefecture.



Today, the 28th (Sunday), atmospheric conditions in the Okinawa region have become extremely unstable due to the influence of moist air flowing into the front.

In the Yaeyama region, be careful of flooding of low-lying areas, rising water levels, and flooding of rivers, and be careful of landslides.
In the main island of Okinawa, be careful of landslides, flooding of low-lying areas, and rising river waters.
Even in the Miyakojima region, be careful of landslides and avoid flooding of low-lying areas.

In the Yaeyama region and Okinawa main island region, please be careful of strong gusts such as lightning and tornadoes on the 28th (Sunday). If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.
Also, in the Miyakojima region, you need to be careful about lightning strikes, gusts of wind, and sudden heavy rain under developed cumulonimbus clouds.




Southern Kyushu and Amami regions also need to be careful of lightning, tornadoes, violent gusts, and sudden heavy rain through tomorrow, the 29th (Monday).
The rainy season front is expected to move northward to Tanegashima and Yakushima areas by tomorrow.
Therefore, there is a risk that cumulonimbus clouds may develop locally in Kagoshima Prefecture from the night of today, the 28th (Sunday) to late on the night of the 29th (Monday) tomorrow, and in the Amami region until late on the night of the 29th (Monday, tomorrow).
Please be careful of lightning strikes, strong gusts of wind such as tornadoes, and sudden heavy rain. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as taking shelter inside a building.

From eastern Japan to western Japan, it feels hot and humid; the number of locations where midsummer days are predicted to increase towards the end of the month

2026/06/28 07:01

Today, the 28th, clouds will spread mainly over the Pacific Ocean side, but there will be some areas on the Sea of Japan side where the sun will reach in the afternoon. The sun is expected to reach the Tohoku region, and temperatures are likely to rise, especially in sunny areas.



The predicted maximum temperatures are Sapporo 21c, Sendai 27c, Tokyo 23c, Nagoya 29c, Kanazawa 27c, Osaka 28c, Kochi 28c, and Fukuoka 26c.

From western Japan to eastern Japan, there are many places where the temperature will be higher than yesterday, and there will be many summer days with temperatures above 25 C. In the sunny Tohoku and western Japan, there are some places where temperatures can reach around 30 degrees Celsius. It's humid and humid in many places, so you need to be careful about heatstroke.
Clouds tend to spread in the Kanto region, and there will be periods of rain. It seems to feel cool even during the day.



Tomorrow, the 29th, the rainy season front will move south of Honshu, and sunny areas are likely to expand. Temperatures will be higher than normal in many places until the 30th (Tuesday), with maximum temperatures exceeding 30 C from western Japan to Tohoku, making it a midsummer day in some places. The hot and humid weather will continue, so if you are going to be active outdoors, please make sure to stay hydrated frequently. You also need to be careful about food hygiene management.
Then, in July, the rainy season front tends to stay near Honshu, and the rainy season is likely to continue from western to eastern Japan. It is likely that there will be many days when temperatures are around normal or slightly lower than normal.

Today's 28th (Sunday) weather: The weather is not clear on the Pacific side of eastern and western Japan. There are many sunny days on the Sea of Japan side.

2026/06/28 06:34

Typhoon No. 7 has become an extratropical cyclone east of Japan and is gradually moving away. Additionally, the rainy season front extends from the south of Japan to southern China, passing through the Nansei Islands.
Today, the 28th (Sunday), the sky is likely to be cloudy, mainly on the Pacific side. On the other hand, there is a high pressure system in the Sea of Japan, and there will likely be periods of sunshine on the Sea of Japan side.



In Hokkaido, sunlight will reach mainly the southern part of Hokkaido. In other areas, clouds are likely to spread, with a chance of showers. It's safe to have a folding umbrella when going out.
Tohoku will be sunny and the sky will be blue. It looks like it's going to be a good day to go out.

From the Kanto region to the west of the Pacific Ocean, the weather will not be clear and the sky will be cloudy. Please bring rain gear when going out as there are periods of rain in various places.
On the Sea of Japan side, there will be time for the sun to reach in the afternoon. It can be hot and humid during the day, so please be careful of heatstroke.

It's a rainy day in Okinawa and Amami as the front moves southward. Caution is required as there may be localized heavy rain and thunderstorms.

Typhoon No. 7 is moving east-northeast over the southern coast of Honshu, with strict warning for landslides and flooding of low-lying land due to heavy rain

2026/06/27 13:02

As of 11:45 a.m. today, Saturday, the 27th, Typhoon No. 7 is moving east-northeast at a speed of 50 km/h over the ocean approximately 150 km south of Cape Muroto.

#Typhoon No. 7 27th (Sat) 11:45 a.m.
=================
Center location Approximately 150km south of Cape Muroto
Traveling speed East-northeast 50 km/h
Central pressure 992hPa
Maximum wind speed 20m/s (near the center)
Maximum instantaneous wind speed 30m/s
==================



The seasonal rain front is stagnant near Honshu, and warm and humid air from the typhoon is flowing toward the front, causing the front to become more active, causing heavy rain mainly on the Pacific side of western and eastern Japan.

We have already passed the peak of rain in Kyushu and Shikoku, but there are active rain clouds from the Kii Peninsula to the Kanto region. Looking at the amount of rain that has fallen in the past 24 hours, it is 200 mm in Kumano Arashika, Mie Prefecture, and 181.5 mm in Choshi City, Chiba Prefecture, with heavy rain mainly in the coastal areas from the Kii Peninsula to the Kanto region. In Choshi, the amount of 24-hour precipitation has already exceeded the highest in June, and the total amount of precipitation is expected to increase in the future.



Typhoon No. 7 is expected to move east-northeast over the sea south of Honshu, and is expected to move over the sea east-southeast of Katsuura City, Chiba Prefecture, around 21:00 today, the 27th.



In the Kinki, Tokai, and Kanto regions, there will be places with extremely heavy rain accompanied by lightning of 50 mm or more per hour, mainly in coastal areas. Please be extremely cautious of landslides, flooding of low-lying areas, rising water levels and flooding of rivers, and be wary of lightning strikes, tornadoes, and other violent gusts. In coastal areas, please be careful of strong winds and high waves accompanied by swells.

In the Koshin region, areas that were shaken strongly by the earthquake that occurred last night on the 26th have a high possibility of landslides occurring even with little rainfall, so please be wary of landslides.

#Rain forecast
The predicted 24-hour precipitation from 12:00 on the 27th to 12:00 on the 28th is high in some places,

Kanto-Koshin region 150mm
Tokai region 200mm

#Wind forecast Thoughts
Maximum wind speed (maximum instantaneous wind speed) expected on the 27th

Kanto-Koshin region 20 meters (30 meters)
Tokai region 20 meters (30 meters)
Shikoku region 20 meters ( 30 meters)

#Wave forecast
Wave height expected on the 27th
Kanto-Koshin region 6 meters with swells
Tokai region 6 meters with swells
Kinki region 5 meters With swells
Shikoku region 5 meters with swells

Wave height expected on the 28th
Kanto-Koshin region 6 meters with swells
Tokai region 5 meters with swells

[Latest typhoon path forecast] The ground is loosened in some places due to the Kanto-Koshin earthquake Typhoon No. 7 approaches tonight Typhoon No. 8 becomes an extratropical cyclone

2026/06/27 12:32

At 9 a.m. today, Saturday, the 27th, Typhoon No. 8 (Higos) turned into an extratropical cyclone east of Japan.
Typhoon No. 7 (Maker) is moving northeast south of Cape Muroto with strong winds.
It is expected to approach the Kanto region tonight.



Typhoon No. 8 (Higos) formed in the Mariana Islands at 9 a.m. on the 23rd (Tuesday), moved westward and northward east of the Philippines.
Afterwards, it changed its course to the east and increased its speed, approaching the Tokai and Kanto regions today (Saturday, the 27th).
Although it did not land in the Kanto region, it proceeded northeast just southeast of the Boso Peninsula.
Then, at 9 a.m., it turned into an extratropical cyclone east of Japan.

As of 10 a.m. today, Saturday, the 27th, Typhoon No. 7 (Maker) is moving northeast south of Cape Muroto with strong winds.
After this, it will gradually increase its speed and approach the Pacific side of the Tokai and Kanto regions by tonight.
After that, it is expected to turn into an extratropical cyclone east of Japan.

Typhoon No. 8 turned into an extratropical cyclone, but brought warm, humid air from the tropics to the vicinity of Honshu.
This time, with the approach of Typhoon No. 7, frontal activity will continue to increase due to the influence of warm and humid air around the typhoon and the influence of warm and humid air flowing towards the front.
Atmospheric conditions are expected to be extremely unstable mainly from western Japan to eastern Japan on the Pacific side.



After this, on Saturday the 27th, there will be heavy to very heavy rain in some places, mainly on the Pacific side of the Tokai and Kanto regions.
Even if Typhoon No. 8 (currently an extratropical cyclone) has passed and there is a lull in the rain, be prepared for the next peak of heavy rain and wind.
In addition, the ground has become loose in some places due to the heavy rains so far and the earthquake that occurred in the eastern part of Yamanashi Prefecture late at night on the 26th (Friday), so there is a risk that the risk of landslides will increase even with less rainfall than usual.

[Typhoon No. 7 and No. 8] East to West Japan Pacific side, fear of approaching typhoon. Continue to be careful even if the rain subsides.

2026/06/27 06:37

Typhoon No. 7 is moving through the Amami region and is expected to approach the Pacific side of eastern Japan from western Japan today.

Typhoon No. 8 is expected to approach the Pacific side of eastern Japan by the morning.

Typhoon No. 7, accompanied by active precipitation areas, will gradually increase speed and approach the Pacific side of eastern Japan from western Japan.



The front is stationary along the Pacific coast from western Japan to eastern Japan, and activity is increasing.
Atmospheric conditions are expected to be extremely unstable due to the influence of warm and humid air around the two typhoons and the influence of warm and humid air flowing towards the
front.



On the 27th (Saturday), please be extremely cautious of landslides, flooding of low-lying areas, and rising and flooding rivers, especially on the Pacific side of eastern Japan, but also on the Pacific side of western Japan.
Please be wary of strong winds and high waves accompanied by swells on the 27th (Saturday), mainly on the Pacific side of eastern Japan.
Be careful of strong gusts of wind such as lightning and tornadoes. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.

[Rain Forecast]
On the 27th, there will be heavy to very heavy rain in some places, mainly on the Pacific side of eastern Japan, but also on the Pacific side of western and northern Japan.
Expected precipitation for 24 hours from 6:00 on the 27th to 6:00 on the 28th is high in some places:
Kanto-Koshin region 200 mm
Tokai region 250 mm

Kinki region 150 mm

[Wind forecast]
Very strong winds will blow on the Pacific side of eastern Japan and the Pacific side of western Japan on the 27th.
Maximum wind speed (maximum instantaneous wind speed) expected on the 27th
Kanto-Koshin region 25 meters (35 meters)
Tokai region 25 meters (35 meters)
Kinki region 20 meters (30 meters)
Shikoku region 20 meters (30 meters)

[Wave forecast]
The Pacific side of eastern Japan will experience heavy waves with swells through the 28th.
Expected wave height on the 27th
Kanto-Koshin region 6 meters with swell
Tokai region 6 meters swell
Kinki region 5 meters with swells
Shikoku region 5 meters with swells

Scheduled on the 28th Expected wave height
Kanto-Koshin region 6 meters with swells
Tokai region 5 meters with swells

[Disaster prevention matters]
From the Kanto-Koshin region to the Kinki region, please be extremely careful on the 27th to avoid landslides, inundation of low-lying land, and rising and flooding rivers.
Please be on guard for strong winds on the Pacific side of eastern Japan on the 27th and high waves with swells into the 28th.
Be careful of strong gusts of wind such as lightning and tornadoes. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.

Seismic intensity 6-lower in eastern Yamanashi Prefecture; watch out for landslides due to continued rain and approaching typhoon

2026/06/27 01:22

At around 22:29 on the 26th, an earthquake occurred with its epicenter in eastern Yamanashi Prefecture, Fuji Five Lakes.
Due to this earthquake, strong shaking was observed in Fujikawaguchiko Town, Yamanashi Prefecture, with a seismic intensity of lower 6, in Otsuki City, with a seismic intensity of 5 or higher, and in Yamanashi, Kanagawa, and Shizuoka prefectures, with a seismic intensity of 5 or lower.

In Yamanashi Prefecture, where strong shaking was observed, it has been raining intermittently since the 25th (Thursday), and active rain clouds are still covering the area.

Typhoon No. 8 is expected to approach from early morning to dawn on the 27th (Saturday), and Typhoon No. 7 is expected to approach in the afternoon.



The ground may be loose due to the continuous rain and shaking from the earthquake.
Please be extremely careful, staying away from steep slopes and cliffs, and staying away from dangerous areas.

Typhoon No. 7 will approach eastern Japan from western Japan on the 27th. Typhoon No. 8 is likely to make landfall in eastern Japan tomorrow morning. Be on high alert for heavy rain disasters.

2026/06/26 18:31

The seasonal rain front is extending from western Japan to eastern Japan, passing along the Pacific coast of eastern Japan, and frontal activity is increasing. As of 5:30 p.m., rain clouds have developed from eastern to western Japan, mainly on the Pacific coast, and a level 4 landslide warning has been issued for Hiroshima and Yamaguchi prefectures.



Typhoon No. 7 is approximately 110 km west of Amami City as of 17:00 today, the 26th, and is moving northeast at a speed of approximately 20 km per hour.

#Typhoon No. 7 26th (Friday) 17:00
==================/br Center Location: Approximately 110km
west of Amami City Travel: Northeast 20km/h
Central pressure: 990 hPa
Maximum wind speed 20 m/s (near the center)
Maximum instantaneous wind speed 30 m/s
==================

In addition, as of 16:00 today on the 26th, Typhoon No. 8 is located in the south of Japan and is moving north at a speed of approximately 50 km per hour.

#Typhoon No. 8 Friday 26th 16:00
==================
Center location South of Japan
Movement North 50km/h
Central pressure 998 hPa
Maximum wind speed 23 m/s (near the center)
Maximum instantaneous wind speed 35 m/s
==================

Typhoon No. 7 is approaching the Nansei Islands, and Typhoon No. 7 is expected to gradually change its course to the east and gain speed, and will approach the Pacific side of eastern Japan from western Japan tomorrow, the 27th (Saturday).
In addition, Typhoon No. 8 will be very close to the Pacific side of eastern Japan by the morning of Saturday the 27th, and there is a possibility that it may make landfall.
The two typhoons will then turn into extratropical cyclones east of Japan.




Due to the warm and humid air brought in by Typhoon No. 7 and Typhoon No. 8, as well as the influence of warm and humid air flowing toward the front, frontal activity will continue to increase into tomorrow, the 27th (Saturday), and atmospheric conditions will become extremely unstable mainly from the Pacific side of western to eastern Japan.
There is a risk of extremely heavy rain, amounting to over 50 mm per hour, falling in Shikoku until around dawn on the 27th, in the Kinki region until around noon, and in the Tokai and Kanto regions into the night.
Strict vigilance is required on the Pacific side of eastern Japan and on the Pacific side of western Japan until tomorrow the 27th (Saturday) against landslides, flooding of low-lying areas, and rising and flooding rivers. In addition, people should be on guard against strong winds and high waves accompanied by swells tomorrow, Saturday the 27th, mainly on the Pacific side of eastern Japan.

[Rain Forecast]
There will be heavy to very heavy rain in some places, mainly on the Pacific side of eastern Japan, but also on the Pacific side of western and northern Japan.

#Expected amount of rain (in areas where there is a lot)
+24-hour precipitation expected by 18:00 on Saturday the 27th
Tohoku region 100 mm
Kanto-Koshin region 200 mm
Tokai region 350 mm
Kinki region 200mm
Shikoku region 180mm
Southern Kyushu 120mm
+Asa Precipitation expected for 24 hours by 18:00 on the 28th (Sunday)
Kanto-Koshin region 100 mm



[Wind forecast]
Very strong winds will blow in the Nansei Islands, the Pacific side of western Japan, and the Pacific side of eastern Japan.

#Expected wind strength
+Maximum wind speed (maximum instantaneous wind speed) expected today, the 26th
Amami region 20 meters (30 meters)
+Maximum wind speed (maximum instantaneous wind speed) expected for tomorrow 27th (Saturday)
Kanto-Koshin region 25 meters (35 meters)
Tokai region 25 meters (35 meters)
Kinki region 23 meters (35 meters)
Shikoku region 23 meters (35 meters)
Southern Kyushu 20 meters (30 meters)

[Wave forecast]
The Nansei Islands, the Pacific side of western Japan, and the Pacific side of eastern Japan will experience heavy waves with swells.

#Expected wave height (with swell)
+Expected wave height for today, the 26th
Amami region 6 Meters
Okinawa region 5 meters
+Estimated wave height for tomorrow 27th (Saturday)
Amami region 5 meters
Okinawa region 5 meters
Kanto-Koshin region 6 meters
Tokai region 6 meters Toru
Kinki region 6 meters
Shikoku region 5 meters
Southern Kyushu 5 meters

Be careful of heatstroke even in June! Prevention methods you should start right away

2026/06/26 17:50

The rainy season has begun nationwide, and it is easy to think that summer is not yet in full swing. However, June is a time when you need to be careful as the risk of heat stroke gradually increases. We will explain in an easy-to-understand manner the risks of heatstroke that lurk in June and the prevention methods you should start right away.

When you think of heatstroke, you may think of midsummer, but June is also a time when heatstroke is likely to occur, as the high humidity during the rainy season and rising temperatures coincide. Because the body is not yet accustomed to the heat, the ability to sweat and regulate body temperature is insufficient, and heat tends to accumulate in the body. Furthermore, the humidity is extremely high during the rainy season, making it difficult for sweat to evaporate. Additionally, awareness of heatstroke prevention is still low in June, and frequent hydration and dressing changes tend to be put off. As a result, there is a risk that dehydration will progress without you noticing, leading to poor health.
In this way, June is a time when you need to be careful about heat stroke, when the three factors of temperature, humidity, and being cautious are all present.

If you recognize heatstroke in its early stages and take appropriate measures, you have a higher chance of preventing it from becoming more serious. Early signs include dizziness, lightheadedness, convulsions, and unusual sweating. In the early stages, patients often do not notice any abnormalities, and elderly people and children in particular may not be able to communicate their symptoms well. It is also important for those around you to notice any abnormalities early on to prevent heat stroke.

Don't let your guard down even during the rainy season. June, when the humidity is high and the temperature starts to rise, is the perfect time to start taking measures to prevent heat stroke. We will introduce recommended prevention methods.
The first thing to do is to maintain a comfortable indoor environment by making good use of air conditioners, dehumidifiers, and fans. As the term "indoor heatstroke" suggests, if you do not use the air conditioner, you may suffer from heatstroke even at home. Especially during the rainy season, the humidity is high, making it difficult for sweat to evaporate, making it difficult for your body temperature to drop.
The second thing is frequent hydration. By the time you feel thirsty, you may already be dehydrated. Make sure to drink plenty of water throughout the day, even if you're not thirsty.
Thirdly, when you go out, use a parasol or hat to avoid direct sunlight. It has been reported that the temperature under a parasol is 2 to 5 degrees Celsius lower than in the sun. Additionally, wearing a hat can lower the perceived temperature by up to -10c.

June is a time when high humidity due to the rainy season and rising temperatures combine to cause heatstroke. It is important to take early measures and not be careless and think, ``It's not summer yet, so it's okay.'' Before the real heat hits, let's get through the summer in good health by incorporating some measures that we can easily do into our daily lives.