Climate at a glance · Jeju
Annual mean16°day and night
Precipitation2040 mma year
Warmest monthJulyavg high 30°
Coldest monthJanuaryavg low 3°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
2040 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 8° | 9° | 14° | 18° | 21° | 25° | 30° | 30° | 27° | 21° | 16° | 10° |
| Avg low | 3° | 3° | 7° | 11° | 15° | 20° | 25° | 25° | 23° | 17° | 11° | 5° |
| Precip, mm | 115 | 125 | 162 | 122 | 171 | 214 | 227 | 227 | 317 | 116 | 158 | 86 |
| Wet days | 16 | 15 | 13 | 10 | 11 | 14 | 18 | 20 | 19 | 13 | 12 | 15 |
| Sunshine | 5.8 h | 5.7 h | 7.3 h | 8.9 h | 8.9 h | 8 h | 8.5 h | 10.4 h | 8.3 h | 8.1 h | 7.1 h | 5.6 h |
| Humidity | 76% | 76% | 74% | 74% | 75% | 84% | 86% | 85% | 85% | 78% | 75% | 74% |
| Sea temperature | 15° | 13° | 13° | 14° | 16° | 21° | 28° | 30° | 29° | 27° | 22° | 18° |
| Daylight | 10 h 13 | 10 h 59 | 11 h 59 | 13 h 01 | 13 h 54 | 14 h 20 | 14 h 07 | 13 h 22 | 12 h 23 | 11 h 21 | 10 h 27 | 9 h 58 |
| UV index (clear sky) | 4 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 9 | 7 | 5 | 4 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
33.4996°N, 126.5312°E