Hiroshima sits in western Japan along the Seto Inland Sea region, an area that generally receives less rain than the Pacific coast but where steep, mountainous terrain just inland can turn a heavy storm into a fast-moving flood threat.
Built across a river delta with six channels reaching the Seto Inland Sea, the city’s low-lying districts have a well-documented history of both river and rainfall flooding, including severe events in 2014 and 2018. %s The July 2018 floods, among the deadliest in recent Japanese history, hit exactly this part of the country and showed how quickly rain-soaked hillsides can fail, which is why radar tracking of storm cells remains essential here. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map
Frequently Asked Questions
Is it raining in Hiroshima right now?
The live radar map above shows precipitation over Hiroshima in real time. Blue shades indicate light rain, while yellow, orange, and red mark heavier downpours. If no colored echoes appear over Hiroshima, no significant rain is currently being detected.
How often does the Hiroshima 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 Hiroshima?
Yes. Press play on the radar to animate the last few hours of rainfall and watch which way rain cells over Japan are moving – the clearest way to judge whether a shower will reach Hiroshima or pass by.
Is this Hiroshima 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.