Climate at a glance · Ulsan
Annual mean58°day and night
Precipitation53.23 ina year
Warmest monthAugustavg high 88°
Coldest monthJanuaryavg low 25°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
53.23 in a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 45° | 48° | 59° | 66° | 73° | 81° | 86° | 88° | 81° | 70° | 61° | 46° |
| Avg low | 25° | 28° | 37° | 46° | 54° | 64° | 73° | 73° | 68° | 54° | 39° | 27° |
| Precip, in | 1.18 | 1.73 | 3.70 | 3.23 | 4.76 | 5.75 | 8.98 | 9.09 | 7.95 | 3.82 | 1.97 | 1.06 |
| Wet days | 3 | 6 | 9 | 7 | 9 | 12 | 16 | 18 | 15 | 10 | 4 | 2 |
| Sunshine | 8 h | 8.1 h | 8.3 h | 9.2 h | 9.5 h | 8.9 h | 9.4 h | 9.8 h | 7.8 h | 7.7 h | 8.6 h | 8.1 h |
| Humidity | 57% | 58% | 65% | 66% | 69% | 76% | 82% | 82% | 82% | 76% | 69% | 60% |
| Sea temperature | 54° | 50° | 53° | 55° | 59° | 62° | 71° | 77° | 78° | 73° | 64° | 57° |
| Daylight | 10 h 04 | 10 h 54 | 11 h 58 | 13 h 06 | 14 h 02 | 14 h 31 | 14 h 17 | 13 h 28 | 12 h 24 | 11 h 17 | 10 h 19 | 9 h 48 |
| UV index (clear sky) | 4 | 5 | 8 | 10 | 11 | 11 | 11 | 10 | 9 | 6 | 4 | 3 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
35.5370°N, 129.3170°E