Karatsu Weather Year-Round — Best Time to Visit
Karatsu, Japan has mild weather year-round. The best time to visit is October (score: 80/100). Annual average high: 19.8°C, total rainfall: 1667mm.
When is the best time to visit Karatsu?
80
October is the best month to visit Karatsu with a travel score of 80/100 (Excellent).
Expect highs of 22.3°C, 8 rain days, and 8.5 hours of daily sunshine.
View October weather details →Travel Score by Month
55
Jan
60
Feb
64
Mar
71
Apr
78
May
70
Jun
71
Jul
75
Aug
74
Sep
80
Oct
71
Nov
60
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Karatsu each month?
19.8°C
Avg High
13.8°C
Avg Low
1667mm
Annual Rain
How much rain does Karatsu get?
Karatsu receives 1667mm of rain annually. The wettest month is typically June with 256mm, while January is the driest.
What is the weather like each month in Karatsu?
January
55
9°C
Low: 4°C
11 rain days
Mixed
February
60
10°C
Low: 4°C
10 rain days
Mixed
March
64
14°C
Low: 7°C
11 rain days
Good
April
71
18°C
Low: 11°C
10 rain days
Good
May
78
23°C
Low: 15°C
10 rain days
Good
June
70
26°C
Low: 20°C
14 rain days
Good
July
71
29°C
Low: 24°C
15 rain days
Good
August
75
31°C
Low: 25°C
14 rain days
Good
September
74
27°C
Low: 22°C
12 rain days
Good
October
Best time to visit80
22°C
Low: 17°C
8 rain days
Excellent
November
71
17°C
Low: 11°C
9 rain days
Good
December
60
11°C
Low: 6°C
10 rain days
Good
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What cities are near Karatsu?
Data based on 1994–2024 averages · Last updated: 2024-12-31