2026 Japan Rainy Season Forecast by Region

The rainy season in Japan for 2026 is expected to have distinct start and end dates depending on the region. If you are planning to travel to Japan, it is crucial to understand the timing of the rainy season.
This article summarizes the expected rainy season dates for various regions in Japan and highlights essential characteristics of the rainy season that travelers should know. Make sure to check everything from your itinerary to what to pack.
- Table of Contents -
Overview of the Expected Rainy Season in Japan 2026
1. Start and End Dates of the Rainy Season by Region
2. Key Characteristics of the Rainy Season in Japan 2026
The rainy season in Japan will begin in the southern region of Okinawa and gradually move northward. Knowing the start and end dates for each region can help you adjust your travel plans accordingly.
Even during the same timeframe, weather conditions can vary significantly by region, making it important to verify the rainy season dates based on your destination.
Okinawa
Start: May 5
End: June 7
Southern Kyushu (Kagoshima, Miyazaki)
Start: May 16
End: June 27
Northern Kyushu (Fukuoka)
Start: May 16
End: June 27
Shikoku (Takamatsu, Matsuyama)
Start: May 17
End: June 27
Chugoku (Hiroshima, Tottori)
Start: May 16
End: June 27
Kinki (Osaka, Kyoto)
Start: May 17
End: June 27
Tokai (Nagoya, Shizuoka)
Start: May 17
End: June 27
Kanto (Tokyo, Yokohama)
Start: May 22
End: June 28
Hokuriku (Kanazawa, Toyama)
Start: May 22
End: June 29
Southern Tohoku (Sendai)
Start: June 23
End: July 18
Northern Tohoku (Aomori)
Start: June 23
End: July 18
Hokkaido (Sapporo)
No rainy season
The rainy season in Japan for 2026 is expected to feature a different weather pattern than before. It is not just continuous rain but rather a highly variable weather situation.
When planning your trip, it is important to consider not only the rainy season dates but also the weather patterns.
1. Roller Coaster Weather
Expect frequent changes from clear skies to sudden rain. It’s advisable to plan your schedule flexibly.
2. Short, Intense Showers
Heavy downpours are expected rather than light rain. Raincoats or waterproof items are more practical than umbrellas.
3. Early Onset of Heat
The rainy front may move north quickly, potentially leading to an earlier start to the heatwave compared to last year. Prepare for summer from mid to late June.
4. Duration from Early May to Mid-July
The rainy season will start in Okinawa and extend to northern Japan, lasting over two months.
If you plan to travel during the 2026 rainy season, preparation is crucial, especially for stronger-than-expected rain.
By packing waterproof shoes, rain gear, and extra clothing, you can enhance your travel experience despite sudden weather changes. Additionally, planning indoor activities is a good idea.
It is recommended to keep your schedule flexible and check the weather daily.












Source :https://blog.naver.com/tour_toctoc/224358872954
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