Hiroshima weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Good
Best time to visit: April – July, September – November
What is the weather like in Hiroshima in June?
In June, Hiroshima is warm: daytime highs average 24 °C, and nights cool down to about 20 °C. The sea averages 20.4 °C – refreshing for a swim. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 222 mm in total. The air is often humid and muggy. All in all, June is a good month for a holiday in Hiroshima.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 14 h 26 min04:57 – 19:23
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 17 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 76 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 30 %36 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Insect repellent
- Rain jacket or umbrella
Hiroshima in June: quick answers
Is Hiroshima hot in June?
Warm rather than hot: in June, daytime highs in Hiroshima average 24 °C and nights cool to about 20 °C.
Can you swim in Hiroshima in June?
Yes. In June the sea averages 20.4 °C – refreshing for a swim.
Does it rain much in Hiroshima in June?
Rain is frequent, with about 13 rainy days and 222 mm in total.
Hiroshima month by month
The whole year in HiroshimaAll destinations: JapanWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences