Cheonan Weather Year-Round — Best Time to Visit
Cheonan, South Korea has mild weather year-round. The best time to visit is May (score: 86/100). Annual average high: 17.4°C, total rainfall: 1147mm.
When is the best time to visit Cheonan?
86
May is the best month to visit Cheonan with a travel score of 86/100 (Excellent).
Expect highs of 23.5°C, 7 rain days, and 9.9 hours of daily sunshine.
View May weather details →Travel Score by Month
59
Jan
64
Feb
68
Mar
79
Apr
86
May
85
Jun
70
Jul
72
Aug
81
Sep
80
Oct
66
Nov
60
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Cheonan each month?
17.4°C
Avg High
8.3°C
Avg Low
1147mm
Annual Rain
How much rain does Cheonan get?
Cheonan receives 1147mm of rain annually. The wettest month is typically July with 260mm, while January is the driest.
What is the weather like each month in Cheonan?
January
59
3°C
Low: -5°C
4 rain days
Mixed
February
64
6°C
Low: -3°C
4 rain days
Good
March
68
11°C
Low: 1°C
6 rain days
Good
April
79
18°C
Low: 6°C
7 rain days
Good
May
Best time to visit86
24°C
Low: 12°C
7 rain days
Excellent
June
85
28°C
Low: 18°C
9 rain days
Excellent
July
70
29°C
Low: 22°C
16 rain days
Good
August
72
30°C
Low: 23°C
15 rain days
Good
September
81
25°C
Low: 17°C
8 rain days
Excellent
October
80
19°C
Low: 10°C
5 rain days
Excellent
November
66
12°C
Low: 3°C
6 rain days
Good
December
60
4°C
Low: -3°C
4 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31