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Hiroshima

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Hiroshima Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Hiroshima year round climate

  • Spring (March–May): Average 11.2–19.8°C, mild climate but with relatively high rainfall, especially in April. Common activities: Cherry blossom viewing, outdoor walks. Recommended clothing: Light jacket, long-sleeved shirts and pants.
  • Summer (June–August): Average 23.7–30.0°C, hot and humid, with the most rainfall in July. Be mindful of sun protection and heatstroke prevention. Common activities: Swimming at the beach, mountain climbing for cooler temperatures. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 19.7–14.4°C, comfortable and pleasant climate with reduced rainfall. Common activities: Maple leaf viewing, enjoying autumn cuisine. Recommended clothing: Light jacket, long-sleeved shirts and pants.
  • Winter (December–February): Average 7.3–6.7°C, relatively low temperatures and humidity, with little rainfall. Common activities: Onsen (hot spring) visits, indoor leisure activities. Recommended clothing: Warm jacket, sweater, scarf.

Hiroshima climatological average

Annual average temperature: approx. 17.6°C / Annual rainfall: approx. 1529 mm / Summer humidity: 70%–80% / Rainiest month: July

Hiroshima monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
5.8°C
33.7
February
6.7°C
73.7
March
11.2°C
115
April
16.5°C
193.3
May
19.8°C
165.7
June
23.7°C
217
July
28.3°C
308
August
30°C
83.7
September
27.3°C
128.3
October
19.7°C
72
November
14.4°C
111
December
7.3°C
28.3

Hiroshima weather for the next seven days

9/12
Saturday
Mist
27.4°C/19.9°C
9/13
Sunday
Mist
27.4°C/21.4°C
9/14
Monday
Light rain shower
26.1°C/20.7°C
9/15
Tuesday
Light rain shower
23.6°C/19.4°C
9/16
Wednesday
Light rain shower
25.7°C/19.5°C
9/17
Thursday
Patchy rain nearby
27.9°C/19.1°C
9/18
Friday
Patchy rain nearby
27.8°C/19.6°C