Localised Rain and Thunderstorms Sweep Across Parts of Japan
Several parts of Japan are experiencing unsettled weather today, with localised rain affecting areas stretching from southern Tohoku through to Kyushu.

Weather conditions have become particularly changeable in some regions, where short periods of heavier rainfall and thunderstorms are possible. The unstable conditions are being linked to a seasonal rain front and moist air moving across the country.
The rain is not expected to remain uniform across all affected areas. Some locations may experience only brief showers, while others could see rainfall intensify for a short period. This makes sudden changes in local weather an important concern for residents and travellers.
Parts of Shizuoka and Kochi have already recorded notable rainfall. Local observations reported 24.5 millimetres of rain in one hour at Muroto-misaki in Kochi, while Shimizu in Shizuoka also experienced a period of relatively strong rainfall.

The situation could change further during the afternoon as rising temperatures contribute to atmospheric instability. Even areas that are currently experiencing sunshine may suddenly develop rain clouds, increasing the possibility of showers or thunderstorms.
Residents are being encouraged to pay attention to rapidly developing storm clouds and move to safe locations if thunderstorm activity approaches. Outdoor activities may need to be reconsidered when lightning becomes a risk.
The unsettled weather could also affect road conditions and visibility in areas receiving heavier showers. Motorists and pedestrians may face sudden changes in conditions as rain develops quickly.
Japan’s seasonal rain front is expected to remain an important factor in the country’s weather pattern, meaning further periods of unsettled conditions could occur.
For people travelling across affected regions, checking updated local forecasts before leaving is advisable, particularly where outdoor plans or long-distance journeys are involved.
The latest weather developments show how quickly localised rain and thunderstorms can form even when conditions appear relatively calm nearby.