Koshigaya sits on Japan’s Pacific-facing Kanto/Tokai coastal plain, where the early-summer tsuyu rain front brings weeks of steady rain in June, and the peak typhoon season from August through October can deliver the year’s most intense rainfall in a single system.
Threaded by several rivers on the Kanto Plain northeast of Tokyo, the city’s low elevation makes it sensitive to both direct rainfall and river-level rises. Because typhoon tracks and strength can shift within hours of approach, radar imagery is a core part of how residents and disaster-management agencies monitor a storm as it nears the coast. The Japan Meteorological Agency operates the national weather radar network covering Saitama. Learn more: Hurricane Season Radar Guide · Open the full Rain Map
Frequently Asked Questions
Is it raining in Koshigaya right now?
The live radar map above shows precipitation over Koshigaya, Saitama in real time. Blue shades indicate light rain, while yellow, orange, and red mark heavier downpours. If no colored echoes appear over Koshigaya, no significant rain is currently being detected.
How often does the Koshigaya rain radar update?
The radar refreshes continuously, typically every few minutes, so the map reflects current conditions rather than an hours-old forecast. Press play to animate the most recent frames.
Can I see if a storm is heading toward Koshigaya?
Yes. Press play on the radar to animate the last few hours of rainfall and watch which way rain cells over Saitama are moving – the clearest way to judge whether a shower will reach Koshigaya or pass by.
Is this Koshigaya rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.