Iwakuni Weather Year-Round — Best Time to Visit
Iwakuni, Japan has mild weather year-round. The best time to visit is October (score: 80/100). Annual average high: 19.4°C, total rainfall: 1590mm.
When is the best time to visit Iwakuni?
80
October is the best month to visit Iwakuni with a travel score of 80/100 (Excellent).
Expect highs of 21.9°C, 8 rain days, and 8.5 hours of daily sunshine.
View October weather details →Travel Score by Month
64
Jan
64
Feb
67
Mar
74
Apr
79
May
73
Jun
73
Jul
76
Aug
78
Sep
80
Oct
73
Nov
67
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Iwakuni each month?
19.4°C
Avg High
12.8°C
Avg Low
1590mm
Annual Rain
How much rain does Iwakuni get?
Iwakuni receives 1590mm of rain annually. The wettest month is typically July with 241mm, while January is the driest.
What is the weather like each month in Iwakuni?
January
64
9°C
Low: 3°C
6 rain days
Good
February
64
10°C
Low: 3°C
8 rain days
Good
March
67
13°C
Low: 5°C
9 rain days
Good
April
74
18°C
Low: 10°C
10 rain days
Good
May
79
22°C
Low: 15°C
10 rain days
Good
June
73
25°C
Low: 19°C
13 rain days
Good
July
73
29°C
Low: 24°C
14 rain days
Good
August
76
30°C
Low: 25°C
13 rain days
Good
September
78
27°C
Low: 21°C
11 rain days
Good
October
Best time to visit80
22°C
Low: 16°C
8 rain days
Excellent
November
73
16°C
Low: 10°C
7 rain days
Good
December
67
11°C
Low: 5°C
6 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31