The best time to visit Jeju City is May–June and October. The rainiest month is August (10 rainy days), the hottest is August (high 31°C (87°F)) and the coldest is January (high 9°C (48°F)).
Red: daytime high · Blue: night low · Bars: rainy days per month (°C)
| Month | High °C | Low °C | Rainy days | Rain mm | Sea | Trip |
|---|---|---|---|---|---|---|
| Jan | 9° | 4° | 8 | 67 | 14° | Good |
| Feb | 10° | 4° | 7 | 63 | 13° | Good |
| Mar | 14° | 7° | 8 | 83 | 13° | Good |
| Apr | 18° | 11° | 7 | 85 | 13° | Great |
| May | 22° | 15° | 7 | 93 | 16° | Great |
| Jun | 25° | 20° | 9 | 167 | 19° | Great |
| Jul | 30° | 24° | 9 | 207 | 24° | Good |
| Aug | 31° | 25° | 10 | 236 | 27° | Good |
| Sep | 27° | 22° | 9 | 248 | 25° | Great |
| Oct | 22° | 16° | 5 | 91 | 22° | Great |
| Nov | 17° | 11° | 7 | 81 | 18° | Great |
| Dec | 11° | 6° | 8 | 54 | 16° | Good |
Highlighted rows are the best months. Rainy day = 1 mm or more of rain.
Pick your arrival and departure dates. We look up the same dates over the last 30 years.
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| Time zone | Korea Standard Time (UTC+9), no daylight saving |
|---|---|
| Power | 220V, 60Hz, Type C/F (round two-pin) sockets |
| Money | Korean won (KRW). Cards are accepted almost everywhere |
| Entry | Visa and K-ETA rules change — check the official K-ETA site and your government's travel advice |
Observed at Korea Meteorological Administration (KMA) station 184, 1996–2025 daily records. Sea temperature: ERA5 (Copernicus), daily mean just offshore. How we calculate