Weather in Hiroshima Today
Current temperature in Hiroshima: 24°C (75°F). Mainly Clear. Today's high 27°C (81°F), low 22°C (72°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Air quality and UV are both favourable great conditions for a walk, run, or outdoor activity.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 27°C.
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Health & Activity Advice
UV index is 5 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Conditions are comfortable for outdoor activity at most points during the day today.
Nearby Regional Outlook
Hiroshima Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Hiroshima?
The hottest month in Hiroshima is typically August, with daytime highs averaging around 31.2°C (88°F), based on 10 years of historical weather data. Overnight lows during this period average near 24.1°C (75°F).
What is the coldest month in Hiroshima?
The coldest month in Hiroshima is typically January, with overnight lows averaging around 0.6°C (33°F) and daytime highs near 8.9°C (48°F), based on 10 years of historical weather data.
Does Hiroshima have a rainy season?
Hiroshima doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. July is the wettest month on average (about 286 mm), while December is the driest (about 49 mm).
What's the best time of year to visit Hiroshima?
The best time to visit Hiroshima is typically October, when daytime highs average a comfortable 22.2°C (72°F). Rainfall during this window averages around 109 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.
Is Hiroshima's air quality safe right now?
As of the latest reading, Hiroshima's air quality index (AQI) is 13, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.