Key Facts
• August 1, 2025: Typhoon 9 (Krosa) moving north near Hachijo Island.
• Weekend forecast: Typhoon to approach Izu Islands and Kanto, heavy rain expected.
• Western Japan: Extreme heat continues, temperatures nearing 40°C next week.
• Heatwave: Inland areas to experience dangerous heat exceeding 35°C.
• Nighttime: Tropical nights with temperatures above 25°C, causing discomfort.
• Health advisory: Avoid prolonged outdoor activities, stay hydrated, and use UV protection.
• Eastern Japan: Rain and strong winds likely, especially in Chiba and Boso Peninsula.
• Fireworks events: Risk of strong winds and sudden thunderstorms nationwide.
• Weather instability: Mid-next week, cold air and moisture may cause sudden weather changes.
• Public warning: Monitor updated forecasts for typhoon and heatwave developments.
Summary
Japan faces dual weather challenges this week: Typhoon 9 (Krosa) and a severe heatwave. The typhoon is expected to bring heavy rain and strong winds to the Izu Islands, Kanto, and parts of Tohoku, with peak impacts on Saturday morning. Meanwhile, Western Japan will endure extreme heat, with temperatures nearing 40°C and tropical nights above 25°C. Residents are advised to take precautions against heatstroke, including staying hydrated and avoiding prolonged outdoor exposure. Nationwide, fireworks events may face disruptions due to strong winds and sudden thunderstorms. Weather instability is expected to increase mid-next week, requiring close monitoring of forecasts.
