Jeju, South KoreaQuick decision
When to visit Jeju?
🌞 Best time overall
May
🌡️ Optimal temperature
15°C–22°C in May
🌧 Least rain
36% rainy days in May
🌧 Wettest month
January (46%)
📅 Best score
7.5/10
By trip type
Best time by type of trip
Hallasan & VolcanoesApril–May or October — summit climb (1,950m), autumn colours.
Haenyeo DiversYear-round — traditional women divers, shows and markets.
Lava BeachesJune–August — Hyeopjae, Hamdeok and black volcanic coastline.
Tangerines & FoodNovember–January — tangerine harvest, black pork BBQ and seafood.
Monthly climate data
Jeju weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 3°C | 8°C | 46% | 3.3 | 6.3h | 3.9/10 |
| 🌦️ February | 2°C | 8°C | 43% | 3.3 | 7.8h | 4.1/10 |
| 🌦️ March | 6°C | 13°C | 40% | 4.2 | 9.7h | 5.3/10 |
| 🌤️ April | 11°C | 18°C | 34% | 4.5 | 10.9h | 7.1/10 |
| 🌤️ May | 15°C | 22°C | 36% | 4.8 | 10.6h | 7.5/10 |
| 🌤️ June | 19°C | 25°C | 45% | 6.9 | 9.7h | 7.4/10 |
| 🌤️ July | 25°C | 29°C | 57% | 7.5 | 10.5h | 7.4/10 |
| 🌤️ August | 26°C | 30°C | 59% | 7.7 | 12.3h | 7.4/10 |
| ⛅ September | 22°C | 26°C | 63% | 11.8 | 9.4h | 7.2/10 |
| 🌤️ October | 17°C | 20°C | 41% | 5.8 | 9.8h | 7.1/10 |
| ⛅ November | 10°C | 16°C | 35% | 3.6 | 8.4h | 6.8/10 |
| 🌦️ December | 5°C | 10°C | 42% | 2.8 | 6.0h | 4.1/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Acceptable
Average 18°C, 37% rainy days, 10.4h sunshine/day. Score: 6.6/10.
☀️ Summer (Jun–Aug) — Good time
Average 28°C, 54% rainy days, 10.8h sunshine/day. Score: 7.4/10.
🍂 Autumn (Sep–Nov) — Good time
Average 21°C, 46% rainy days, 9.2h sunshine/day. Score: 7.0/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 9°C, 44% rainy days, 6.7h sunshine/day. Score: 4.0/10.
Accommodation
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Check availability during the recommended period
Tip : off-peak months (January, February) are cheapest but weather is significantly worse.
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Activities and tours in Jeju
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
May is ideal with 36% rainy days and 22°C.
January is the wettest month with 46% rainy days.
Yes, May is the best month with an average of 22°C.
In winter, the average score is 4.0/10. Difficult period — prefer the peak season.
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