Niihama Weather Year-Round — Best Time to Visit
Niihama, Japan has mild weather year-round. The best time to visit is May (score: 78/100). Annual average high: 19.7°C, total rainfall: 1845mm.
When is the best time to visit Niihama?
78
May is the best month to visit Niihama with a travel score of 78/100 (Good).
Expect highs of 22.6°C, 11 rain days, and 9.6 hours of daily sunshine.
View May weather details →Travel Score by Month
56
Jan
60
Feb
64
Mar
72
Apr
78
May
70
Jun
72
Jul
73
Aug
72
Sep
76
Oct
69
Nov
60
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Niihama each month?
19.7°C
Avg High
13.5°C
Avg Low
1845mm
Annual Rain
How much rain does Niihama get?
Niihama receives 1845mm of rain annually. The wettest month is typically June with 247mm, while January is the driest.
What is the weather like each month in Niihama?
January
56
9°C
Low: 4°C
13 rain days
Mixed
February
60
10°C
Low: 4°C
11 rain days
Mixed
March
64
14°C
Low: 6°C
12 rain days
Good
April
72
18°C
Low: 11°C
11 rain days
Good
May
Best time to visit78
23°C
Low: 15°C
11 rain days
Good
June
70
26°C
Low: 20°C
15 rain days
Good
July
72
30°C
Low: 24°C
16 rain days
Good
August
73
31°C
Low: 25°C
16 rain days
Good
September
72
27°C
Low: 22°C
15 rain days
Good
October
76
22°C
Low: 16°C
11 rain days
Good
November
69
17°C
Low: 11°C
10 rain days
Good
December
60
11°C
Low: 6°C
12 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31