Isahaya Weather Year-Round — Best Time to Visit
Isahaya, Japan has mild weather year-round. The best time to visit is October (score: 83/100). Annual average high: 19.6°C, total rainfall: 2061mm.
When is the best time to visit Isahaya?
83
October is the best month to visit Isahaya with a travel score of 83/100 (Excellent).
Expect highs of 22.5°C, 7 rain days, and 8.6 hours of daily sunshine.
View October weather details →Travel Score by Month
58
Jan
61
Feb
64
Mar
70
Apr
76
May
66
Jun
69
Jul
75
Aug
76
Sep
83
Oct
72
Nov
62
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Isahaya each month?
19.6°C
Avg High
14.6°C
Avg Low
2061mm
Annual Rain
How much rain does Isahaya get?
Isahaya receives 2061mm of rain annually. The wettest month is typically June with 401mm, while January is the driest.
What is the weather like each month in Isahaya?
January
58
10°C
Low: 5°C
10 rain days
Mixed
February
61
11°C
Low: 6°C
9 rain days
Good
March
64
14°C
Low: 8°C
11 rain days
Good
April
70
18°C
Low: 12°C
11 rain days
Good
May
76
22°C
Low: 16°C
10 rain days
Good
June
66
25°C
Low: 20°C
16 rain days
Good
July
69
28°C
Low: 24°C
16 rain days
Good
August
75
30°C
Low: 25°C
14 rain days
Good
September
76
27°C
Low: 22°C
11 rain days
Good
October
Best time to visit83
23°C
Low: 18°C
7 rain days
Excellent
November
72
17°C
Low: 13°C
9 rain days
Good
December
62
12°C
Low: 7°C
9 rain days
Good
Compare Isahaya
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What cities are near Isahaya?
Data based on 1994–2024 averages · Last updated: 2024-12-31