Iwatsuki Weather Year-Round — Best Time to Visit
Iwatsuki, Japan has mild weather year-round. The best time to visit is August (score: 77/100). Annual average high: 19.3°C, total rainfall: 1358mm.
When is the best time to visit Iwatsuki?
77
August is the best month to visit Iwatsuki with a travel score of 77/100 (Good).
Expect highs of 30.6°C, 12 rain days, and 9.6 hours of daily sunshine.
View August weather details →Travel Score by Month
64
Jan
64
Feb
63
Mar
69
Apr
73
May
71
Jun
72
Jul
77
Aug
72
Sep
70
Oct
67
Nov
64
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Iwatsuki each month?
19.3°C
Avg High
10.5°C
Avg Low
1358mm
Annual Rain
How much rain does Iwatsuki get?
Iwatsuki receives 1358mm of rain annually. The wettest month is typically September with 176mm, while December is the driest.
What is the weather like each month in Iwatsuki?
January
64
8°C
Low: -2°C
6 rain days
Good
February
64
9°C
Low: -1°C
6 rain days
Good
March
63
13°C
Low: 3°C
10 rain days
Good
April
69
18°C
Low: 8°C
11 rain days
Good
May
73
23°C
Low: 13°C
12 rain days
Good
June
71
26°C
Low: 18°C
13 rain days
Good
July
72
29°C
Low: 22°C
14 rain days
Good
August
Best time to visit77
31°C
Low: 23°C
12 rain days
Good
September
72
27°C
Low: 20°C
13 rain days
Good
October
70
21°C
Low: 14°C
12 rain days
Good
November
67
16°C
Low: 7°C
9 rain days
Good
December
64
11°C
Low: 1°C
6 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31