Best Time to Visit Jeju
South Korea · 30-year monthly climate averages
☀️ When to go
Based on 30 years of climate data, the most comfortable months to visit Jeju are April, May and October, when daytime temperatures are agreeable and rainfall is relatively low.
Climate profile
Jeju sees its warmest weather in August, when daytime highs average around 30°C, and its coolest in January (around 9°C).
Annual precipitation totals roughly 1502mm — August is typically the wettest month (~272mm) and December the driest (~56mm).
A distinctly wetter period runs from June to September — worth planning around if you prefer dry days.
May is the sunniest month, with about 212 hours of sunshine.
Year at a glance
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
🔥 Recent heat vs normal
Daily forecast highs vs the 30-year normal — last 37 days
Each bar is one day: orange above normal, blue below.
Month by month
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 9° / 4°C | 68mm | 🤔 Fair |
| February | 10° / 4°C | 57mm | 🤔 Fair |
| March | 13° / 7°C | 91mm | 🤔 Fair |
| April | 18° / 11°C | 90mm | 👍 Good |
| May | 22° / 15°C | 96mm | 🌟 Great |
| June | 25° / 19°C | 171mm | 👍 Good |
| July | 29° / 24°C | 210mm | 🤔 Fair |
| August | 30° / 25°C | 272mm | ⚠️ Challenging |
| September | 26° / 21°C | 228mm | 🤔 Fair |
| October | 22° / 16°C | 95mm | 🌟 Great |
| November | 16° / 10°C | 70mm | 👍 Good |
| December | 11° / 6°C | 56mm | 🤔 Fair |
FAQ
- What is the best time to visit Jeju?
- Based on 30 years of climate data, the most comfortable months to visit Jeju are April, May and October, when daytime temperatures are agreeable and rainfall is relatively low.
- What is the hottest month in Jeju?
- August is typically the hottest month in Jeju, with average daytime highs around 30°C.
- What is the rainiest month in Jeju?
- August is usually the wettest month, with around 272mm of precipitation.