Hiroshima weather
At 5:00 AM local time it was clear and 12°C (54°F). Mostly light, on-and-off rain; heavier around 2 AM, 4 AM (3.5 mm total). Best months for weather: May, Aug, Oct. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Hiroshima, Hiroshima, Japan.
Current conditions
- Clouds
- 2%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 2 AM, 4 AM (3.5 mm total)
Daily Forecast
Best Time to Visit
Peak season May, Aug, OctOff season Jul, Dec–Mar
About Hiroshima weather
Is it raining in Hiroshima right now?
No. It’s clear and 12° right now. Mostly light, on-and-off rain; heavier around 2 AM, 4 AM (3.5 mm total).
What’s the weather like in Hiroshima this week?
Over the next 7 days, expect highs of 16–22° and lows of 7–14°. Rain is likely on 2 of 7 days (Monday, Thursday). The driest day looks like Sunday.
Has it been raining in Hiroshima lately?
In the past 7 days, Hiroshima had 4 rainy days and 90.7 mm of rain in total.
What should I pack for Hiroshima?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Hiroshima weather by month
When is the best time to visit Hiroshima?
Based on weather alone, the best time to visit Hiroshima is May, Aug, Oct, according to NASA's 2001–2025 climate averages. Jul, Dec–Mar tends to be the least pleasant. Average highs run from 6°C (42°F) in January to 30°C (85°F) in August.
What is the rainiest month in Hiroshima?
July is the wettest month, with about 260 mm (10.2 in) of rain on average. January is the driest, with about 63 mm (2.5 in).
What is the hottest month in Hiroshima?
August is the warmest, with average highs of 30°C (85°F) and lows of 21°C (71°F). January is the coolest, with highs of 6°C (42°F) and lows of -2°C (28°F).
How warm is the sea in Hiroshima?
The sea is warmest in August at about 29°C (85°F) and coolest in February at about 10°C (50°F). It is comfortable for swimming (22°C or more) in Jul–Oct.
Hiroshima weather month by month
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months