Weather in Jeju Island
What's the weather like in Jeju Island?
Jeju Island has a wide swing between hot summers and cold winters and heavy rainfall, especially in the wet season. Average daytime highs range from 8°C (46°F) in January to 28°C (83°F) in July, with overnight lows around 3°C (38°F) and 24°C (75°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit Jeju Island are May through June, and September through October.
Quick facts
- Country
- 🇰🇷 South Korea
- Region
- Asia
- Time zone
- Asia/Seoul
- Coordinates
- 33.500, 126.531
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 3°C / 38°F | 90 mm | 11 | — |
| February | 8°C / 47°F | 4°C / 38°F | 73 mm | 10 | — |
| March | 13°C / 55°F | 7°C / 45°F | 112 mm | 10 | — |
| April | 17°C / 62°F | 11°C / 52°F | 130 mm | 10 | — |
| May | 21°C / 71°F | 16°C / 60°F | 147 mm | 10 | — |
| June | 24°C / 76°F | 20°C / 67°F | 206 mm | 14 | — |
| July | 28°C / 83°F | 24°C / 75°F | 253 mm | 18 | — |
| August | 29°C / 84°F | 25°C / 77°F | 269 mm | 18 | — |
| September | 25°C / 77°F | 22°C / 71°F | 359 mm | 17 | — |
| October | 20°C / 69°F | 16°C / 61°F | 152 mm | 10 | — |
| November | 15°C / 60°F | 11°C / 51°F | 88 mm | 11 | — |
| December | 10°C / 49°F | 5°C / 42°F | 85 mm | 14 | — |
Jeju Island by month
Detailed weather for any specific month:
Cities with a similar climate to Jeju Island
Frequently asked questions
When is the best time to visit Jeju Island?
The most comfortable months in Jeju Island are usually May, June, October, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in Jeju Island?
August is typically the hottest month in Jeju Island, averaging a high of 29°C (84°F).
What is the coldest month in Jeju Island?
January is usually the coldest, with average lows around 3°C (38°F).
Does it snow in Jeju Island?
Snow is rare in Jeju Island; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.