Jeju Island Weather

Jeju has a humid subtropical climate . Four distinct seasons are experienced on Jeju; winters are cool with moderate rainfall, while summers are hot and humid with very high rainfall.

In January 2016, a cold wave affected the region. Snow and frigid weather forced the cancellation of 1,200 flights on Jejudo, stranding approximately 90,300 passengers.

Average Temperature
Jan
48 °F
9 °C
Feb
48 °F
9 °C
Mar
54 °F
12 °C
Apr
61 °F
16 °C
May
70 °F
21 °C
Jun
75 °F
24 °C
Jul
77 °F
25 °C
Aug
84 °F
29 °C
Sep
77 °F
25 °C
Oct
70 °F
21 °C
Nov
63 °F
17 °C
Dec
50 °F
10 °C
Humidity
Jan
54%
Feb
53%
Mar
54%
Apr
63%
May
51%
Jun
73%
Jul
80%
Aug
75%
Sep
78%
Oct
63%
Nov
59%
Dec
58%
Rain
Jan
21mm
Feb
25mm
Mar
32mm
Apr
58mm
May
68mm
Jun
149mm
Jul
155mm
Aug
91mm
Sep
175mm
Oct
42mm
Nov
36mm
Dec
34mm
Clouds
Jan
54%
Feb
66%
Mar
58%
Apr
61%
May
71%
Jun
67%
Jul
82%
Aug
59%
Sep
74%
Oct
55%
Nov
50%
Dec
79%
Air quality US AQI
Jan
63
Feb
64
Mar
77
Apr
71
May
66
Jun
69
Jul
50
Aug
53
Sep
55
Oct
61
Nov
71
Dec
69
Sun
Jan
3UVI
Feb
4UVI
Mar
5UVI
Apr
6UVI
May
6UVI
Jun
6UVI
Jul
5UVI
Aug
6UVI
Sep
6UVI
Oct
5UVI
Nov
4UVI
Dec
3UVI