Weather in Hiroshima Today
Current temperature in Hiroshima: 27°C (81°F). Mainly Clear. Today's high 28°C (82°F), low 22°C (72°F).
Today's Daylight Forecast
Moon & Islamic Calendar
High UV apply sunscreen before heading out. A hat or sun umbrella is recommended during peak hours.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 27°C.
11 of the last 19 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
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 6 today — high. Apply sunscreen before heading out, and consider a hat or shade during peak hours (roughly late morning to mid-afternoon).
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity 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.