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Iwakuni

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Iwakuni Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Iwakuni year round climate

  • Spring (March–May): 52–66°F on average, mild and rainy, with occasional overcast days. Common activities: Hiking, flower viewing. Recommended clothing: Light jacket, comfortable long-sleeved clothing.
  • Summer (June–August): 73–86°F on average, hot and humid, with relatively high rainfall, particularly in July. Common activities: Beat the heat, viewing Weigela (if Iwakuni has related scenic spots). Recommended clothing: Light and breathable clothing, sun hat.
  • Autumn (September–November): 59–81°F on average, comfortable and pleasant, with gradually decreasing rainfall. Common activities: Maple viewing (if Iwakuni has related scenic spots), outdoor activities. Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): 43–46°F on average, cold and dry, with low rainfall. Common activities: Hot springs (if Iwakuni has related scenic spots), indoor activities. Recommended clothing: Warm jacket, sweater, scarf.

Iwakuni climatological average

Annual average temperature: approx. 64.0°F / Annual rainfall: approx. 1940 mm / Summer humidity: 70%–80% / Rainiest month: July

Iwakuni monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
43.7°F
54.5
February
44.8°F
101
March
52.3°F
166.4
April
61.3°F
238.8
May
66.9°F
199.4
June
73.9°F
297.4
July
82.8°F
306.2
August
86°F
137.9
September
81.7°F
190
October
68.7°F
77.9
November
59.4°F
129
December
46.9°F
41.6

Iwakuni weather for the next seven days

3/22
Sunday
Moderate rain
55.9°F/43.2°F
3/23
Monday
Patchy rain nearby
61.1°F/46.4°F
3/24
Tuesday
Sunny
56°F/42.5°F
3/25
Wednesday
Moderate rain
49.7°F/47.2°F
3/26
Thursday
Sunny
59.3°F/46.2°F
3/27
Friday
Patchy rain nearby
59.5°F/46.6°F
3/28
Saturday
Patchy rain nearby
60.9°F/47.5°F