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Cheju Weather Averages

Climate averages for Cheju based on 10 years of historical data.

Annual avg temp
16.1°C
Annual avg high
18.3°C
Annual avg low
14.0°C
Record high
34°C
Record low
-5°C
Annual rainfall
2064 mm
Rainy days
144
Sunshine
3.3h/day
Niiskus
74%

Average Cheju temperatures by month

Avg high

J
F
13°
M
17°
A
21°
M
24°
J
28°
J
29°
A
25°
S
20°
O
16°
N
10°
D

Avg low

J
F
M
12°
A
15°
M
20°
J
24°
J
25°
A
22°
S
17°
O
12°
N
D

Average rainfall in Cheju by month

Rainfall (mm)

103
J
91
F
120
M
136
A
153
M
244
J
261
J
231
A
337
S
160
O
130
N
97
D

Sunshine hours in Cheju by month

Sunshine (h/day)

3
J
3
F
4
M
5
A
5
M
4
J
3
J
3
A
2
S
4
O
3
N
2
D

Humidity in Cheju by month

Average humidity

72%
J
69%
F
68%
M
70%
A
72%
M
80%
J
84%
J
80%
A
79%
S
70%
O
70%
N
70%
D

Sea temperature in Cheju by month

Sea temp

16°
J
15°
F
15°
M
16°
A
18°
M
22°
J
26°
J
30°
A
29°
S
24°
O
21°
N
18°
D

Month-by-month averages

Month Avg High Avg Low Rainfall Sunshine Sea Temp
Jaanuari ilm 8°C 4°C 103 mm 2.6h 16.4°C
Veebruari ilm 9°C 4°C 91 mm 2.7h 15.2°C
Märtsi ilm 13°C 8°C 120 mm 4.0h 14.8°C
Aprilli ilm 17°C 12°C 136 mm 4.7h 16.1°C
Mai ilm 21°C 15°C 153 mm 4.9h 17.9°C
Juuni ilm 24°C 20°C 244 mm 3.9h 21.9°C
Juuli ilm 28°C 24°C 261 mm 2.6h 26.1°C
Augusti ilm 29°C 25°C 231 mm 2.6h 30.1°C
Septembri ilm 25°C 22°C 337 mm 2.4h 28.6°C
Oktoobri ilm 20°C 17°C 160 mm 3.6h 24.4°C
Novembri ilm 16°C 12°C 130 mm 3.2h 20.5°C
Detsembri ilm 10°C 6°C 97 mm 2.3h 18.2°C