Iwamizawa Weather Year-Round — Best Time to Visit
Iwamizawa, Japan has cool weather year-round. The best time to visit is July (score: 77/100). Annual average high: 11.2°C, total rainfall: 1066mm.
When is the best time to visit Iwamizawa?
77
July is the best month to visit Iwamizawa with a travel score of 77/100 (Good).
Expect highs of 24.2°C, 12 rain days, and 9.4 hours of daily sunshine.
View July weather details →Travel Score by Month
35
Jan
40
Feb
47
Mar
59
Apr
67
May
76
Jun
77
Jul
73
Aug
71
Sep
60
Oct
44
Nov
32
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Iwamizawa each month?
11.2°C
Avg High
3.4°C
Avg Low
1066mm
Annual Rain
How much rain does Iwamizawa get?
Iwamizawa receives 1066mm of rain annually. The wettest month is typically August with 167mm, while February is the driest.
What is the weather like each month in Iwamizawa?
January
35
-3°C
Low: -11°C
13 rain days
Poor
February
40
-2°C
Low: -10°C
11 rain days
Poor
March
47
2°C
Low: -5°C
11 rain days
Mixed
April
59
10°C
Low: 1°C
11 rain days
Mixed
May
67
16°C
Low: 7°C
12 rain days
Good
June
76
20°C
Low: 12°C
10 rain days
Good
July
Best time to visit77
24°C
Low: 17°C
12 rain days
Good
August
73
25°C
Low: 18°C
13 rain days
Good
September
71
21°C
Low: 13°C
12 rain days
Good
October
60
15°C
Low: 7°C
13 rain days
Good
November
44
7°C
Low: 0°C
15 rain days
Mixed
December
32
-1°C
Low: -8°C
16 rain days
Poor
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Data based on 1994–2024 averages · Last updated: 2024-12-31