Weather in Jeju 🇰🇷
Monthly weather averages & travel planning
Avg Temp
16°C
Rain Days
9 days
Sun Hours
9 hrs
Humidity
70%
Jeju Weather Guide
Complete monthly climate data for Jeju, 🇰🇷 South Korea
January
7°/4°C
9 rain days, 5h sun
February
8°/4°C
8 rain days, 7h sun
March
11°/7°C
10 rain days, 8h sun
April
16°/11°C
9 rain days, 9h sun
May
20°/15°C
10 rain days, 9h sun
June
23°/19°C
13 rain days, 8h sun
July
27°/24°C
16 rain days, 9h sun
August
28°/25°C
17 rain days, 10h sun
September
25°/22°C
13 rain days, 8h sun
October
20°/17°C
7 rain days, 9h sun
November
15°/11°C
8 rain days, 7h sun
December
10°/6°C
8 rain days, 6h sun
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 7°C | 4°C | 9 | 5h | View |
| February | 8°C | 4°C | 8 | 7h | View |
| March | 11°C | 7°C | 10 | 8h | View |
| April | 16°C | 11°C | 9 | 9h | View |
| May | 20°C | 15°C | 10 | 9h | View |
| June | 23°C | 19°C | 13 | 8h | View |
| July | 27°C | 24°C | 16 | 9h | View |
| August | 28°C | 25°C | 17 | 10h | View |
| September | 25°C | 22°C | 13 | 8h | View |
| October | 20°C | 17°C | 7 | 9h | View |
| November | 15°C | 11°C | 8 | 7h | View |
| December | 10°C | 6°C | 8 | 6h | View |
January
9 rain days, 5h sun
7°4°
February
8 rain days, 7h sun
8°4°
March
10 rain days, 8h sun
11°7°
April
9 rain days, 9h sun
16°11°
May
10 rain days, 9h sun
20°15°
June
13 rain days, 8h sun
23°19°
July
16 rain days, 9h sun
27°24°
August
17 rain days, 10h sun
28°25°
September
13 rain days, 8h sun
25°22°
October
7 rain days, 9h sun
20°17°
November
8 rain days, 7h sun
15°11°
December
8 rain days, 6h sun
10°6°
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
Travel Planning
Data Sources for Jeju
Climate normals represent 30-year averages (1991-2020). Individual years may vary.