Climate at a glance · Jeju
Annual mean62°day and night
Precipitation80.31 ina year
Warmest monthJulyavg high 86°
Coldest monthJanuaryavg low 37°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
80.31 in a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 46° | 48° | 57° | 64° | 70° | 77° | 86° | 86° | 81° | 70° | 61° | 50° |
| Avg low | 37° | 37° | 45° | 52° | 59° | 68° | 77° | 77° | 73° | 63° | 52° | 41° |
| Precip, in | 4.53 | 4.92 | 6.38 | 4.80 | 6.73 | 8.43 | 8.94 | 8.94 | 12.48 | 4.57 | 6.22 | 3.39 |
| 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 | 59° | 55° | 55° | 57° | 61° | 69° | 82° | 85° | 85° | 80° | 72° | 65° |
| 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