Jeju City Climate by Month
Jeju City, Jeju-do, South Korea
Hot summers and cool winters, with rain spread through the year.
Jeju City has hot summers and cool winters, with rain spread through the year. Afternoon highs range from 48°F (9°C) in January to 86°F (30°C) in August, and January nights average 37°F (3°C). About 66 in (1673 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 37°F(3°C)
- Average low, January
- Rain per year
- 66 in(1673 mm)
- No clear rainy season
- Humidity
- 72%
- Sunniest: May
Best and worst months in Jeju City
Best for weatherOctober is the best time for weather in Jeju City: highs near 72°F (22°C) and about 3.0 in (76 mm) of rain a month.
Least pleasantJanuary and August are the least pleasant; August is the wettest, with 11 in (267 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Jeju City weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 37°F(3°C) | 2.5 in(63 mm) | 66% | 2.0 |
| FebFebruary | 50°F(10°C) | 38°F(3°C) | 2.5 in(64 mm) | 62% | 3.0 |
| MarMarch | 56°F(14°C) | 43°F(6°C) | 4.0 in(102 mm) | 66% | 4.3 |
| AprApril | 65°F(18°C) | 50°F(10°C) | 5.4 in(137 mm) | 68% | 5.1 |
| MayMay | 72°F(22°C) | 58°F(14°C) | 6.4 in(162 mm) | 72% | 5.5 |
| JunJune | 77°F(25°C) | 66°F(19°C) | 8.2 in(208 mm) | 80% | 5.3 |
| JulJuly | 84°F(29°C) | 74°F(23°C) | 10 in(258 mm) | 83% | 5.3 |
| AugAugust | 86°F(30°C) | 76°F(24°C) | 11 in(267 mm) | 81% | 5.3 |
| SepSeptember | 80°F(26°C) | 68°F(20°C) | 8.2 in(208 mm) | 77% | 4.4 |
| OctOctoberBest | 72°F(22°C) | 58°F(15°C) | 3.0 in(76 mm) | 71% | 3.9 |
| NovNovember | 62°F(17°C) | 49°F(9°C) | 2.7 in(68 mm) | 67% | 2.7 |
| DecDecember | 52°F(11°C) | 40°F(4°C) | 2.4 in(60 mm) | 66% | 1.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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