Key Facts
• Autumn rain front to linger near Honshu, causing widespread rain this week.
• Heavy rain expected on September 10-11 due to warm, moist air inflow.
• September 13-15: Low pressure system and front may bring stormy weather.
• Northern Japan could experience strong winds; thunderstorms possible nationwide.
• Intense late-summer heat to subside, with autumn signs emerging in Hokkaido.
• Western and eastern Japan to still see temperatures above 30°C; stay cautious.
Summary
Japan’s weather this week will be dominated by a stationary autumn rain front, leading to cloudy and rainy conditions, particularly in western and eastern regions. Heavy rain is expected on September 10-11, with potential thunderstorms and strong winds during the September 13-15 holiday weekend as a low-pressure system moves through. While the intense late-summer heat will ease, temperatures in some areas may still exceed 30°C. Residents are advised to monitor weather updates and take precautions for both rain and lingering heat.
