Jeju-do weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Jeju-do, South Korea. Like most weather services, we show Jeju-do at one spot: Jeju City, its largest city. Best months for weather: Oct.
Best Time to Visit
Peak season OctOff season Jul–Aug, Dec–Apr
Jeju-do weather by month
When is the best time to visit Jeju-do?
Based on weather alone, the best time to visit Jeju-do is Oct, according to NASA's 2001–2025 climate averages. Jul–Aug, Dec–Apr tends to be the least pleasant. Average highs run from 9°C (48°F) in January to 28°C (82°F) in August.
What is the rainiest month in Jeju-do?
August is the wettest month, with about 261 mm (10.3 in) of rain on average. January is the driest, with about 50 mm (2.0 in).
What is the hottest month in Jeju-do?
August is the warmest, with average highs of 28°C (82°F) and lows of 26°C (79°F). January is the coolest, with highs of 9°C (48°F) and lows of 6°C (43°F).
Does Jeju-do have a rainy season?
Yes. Jun–Sep is the rainy season (150 mm or more a month), while Dec–Jan is usually dry (under 60 mm).
Jeju-do weather month by month
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Jeju City), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in Jeju-do
Weather can differ a lot within Jeju-do: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Jeju City | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Seogwipo | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Tallang-dong | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Ido-dong | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Seodong | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Ara-dong | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Gaigeturi | Oct | Jun–Sep | 9–28°C | 1,579 mm |
| Ora-dong | Oct | Jun–Sep | 9–28°C | 1,579 mm |