Key Facts
• August 8–11: Heavy rain expected in Western Japan due to a stationary front.
• Risk of landslides and river flooding in Kyushu and San’in regions.
• Nationwide unstable atmospheric conditions may cause sudden rain or thunderstorms.
• Heatwave subsides; no 40°C temperatures expected in Kanto and Tokai regions.
• Daytime highs remain above 30°C; tropical nights persist in Eastern and Western Japan.
• Perseid meteor shower peaks on August 12, visibility depends on weather conditions.
• Western to Northern Japan may experience cloudy skies or rain during the meteor shower.
• Continue heatstroke prevention: hydrate and rest in cool areas.
Summary
A stationary front will bring heavy rain to Western Japan during the long weekend (August 8–11), with risks of landslides and flooding in Kyushu and San’in regions. Nationwide, unstable atmospheric conditions may lead to sudden rain or thunderstorms. While the extreme heatwave subsides, temperatures will still exceed 30°C, and tropical nights will persist in Eastern and Western Japan. The Perseid meteor shower peaks on August 12, but visibility may be affected by cloudy skies or rain, especially in Western to Northern Japan. Stay updated on weather forecasts and continue heatstroke prevention measures.
