Jeju: weather and best time to visit
Jeju (South Korea) reaches its warmest daytime temperatures in August at around 29°C; the coolest month is January at around 8°C. The sea is warmest in August at about 27°C.
Best time to visit
- 🏖 Beach
- 🏛 City trip
- 🥾 Hiking
Things to do in Jeju
Tours, tickets and activities for your trip.
Jeju climate, month by month
| Month | Day °C | Night °C | Sea °C | Rain d | Sun h | Beach | City | Hiking |
|---|---|---|---|---|---|---|---|---|
| Jan | 8° | 4° | 15° | 9 | 5 | 30 | 29 | 51 |
| Feb | 9° | 4° | 14° | 8 | 7 | 36 | 34 | 61 |
| Mar | 12° | 7° | 14° | 10 | 8 | 40 | 42 | 74 |
| Apr | 16° | 11° | 14° | 9 | 9 | 46 | 65 | 80 |
| May | 20° | 15° | 16° | 10 | 9 | 53 | 81 | 81 |
| Jun | 23° | 19° | 20° | 13 | 8 | 55 | 70 | 65 |
| Jul | 27° | 24° | 24° | 16 | 9 | 75 | 63 | 47 |
| Aug | 29° | 25° | 27° | 18 | 10 | 80 | 60 | 44 |
| Sep | 25° | 22° | 25° | 13 | 8 | 75 | 72 | 60 |
| Oct | 20° | 17° | 22° | 7 | 9 | 65 | 84 | 84 |
| Nov | 15° | 11° | 19° | 8 | 7 | 42 | 58 | 77 |
| Dec | 10° | 6° | 17° | 9 | 6 | 32 | 31 | 63 |
Rain d = average rain days per month · Sun h = average sunshine hours per day · scores 0–100, higher is better.
Every month in detail
Jeju in January
Daytime highs around 8°C, nights near 4°C. January is the coldest month of the year. Expect about 9 rain days and 5 hours of sunshine per day. The sea is cold at 15°C — not swimming weather.
Beach: poorCity: poorHiking: mixedMore destinations for January →
Jeju in February
Daytime highs around 9°C, nights near 4°C. Expect about 8 rain days and 7 hours of sunshine per day. The sea is cold at 14°C — not swimming weather.
Beach: poorCity: poorHiking: goodMore destinations for February →
Jeju in March
Daytime highs around 12°C, nights near 7°C. Expect about 10 rain days and 8 hours of sunshine per day. The sea is cold at 14°C — not swimming weather.
Beach: mixedCity: mixedHiking: goodMore destinations for March →
Jeju in April
Daytime highs around 16°C, nights near 11°C. Expect about 9 rain days and 9 hours of sunshine per day. The sea is cold at 14°C — not swimming weather.
Beach: mixedCity: goodHiking: excellentMore destinations for April →
Jeju in May
Daytime highs around 20°C, nights near 15°C. Expect about 10 rain days and 9 hours of sunshine per day. The sea is cold at 16°C — not swimming weather.
Beach: mixedCity: excellentHiking: excellentMore destinations for May →
Jeju in June
Daytime highs around 23°C, nights near 19°C. Expect about 13 rain days and 8 hours of sunshine per day. The sea is on the fresh side at 20°C.
Beach: mixedCity: goodHiking: goodMore destinations for June →
Jeju in July
Daytime highs around 27°C, nights near 24°C. Expect about 16 rain days and 9 hours of sunshine per day. The sea is pleasant for swimming at 24°C.
Beach: goodCity: goodHiking: mixedMore destinations for July →
Jeju in August
Daytime highs around 29°C, nights near 25°C. August is the warmest month of the year. It is the rainiest month of the year. No month gets more sunshine. The sea is at its warmest now. Expect about 18 rain days and 10 hours of sunshine per day. The sea is properly warm at 27°C.
Beach: excellentCity: goodHiking: mixedMore destinations for August →
Jeju in September
Daytime highs around 25°C, nights near 22°C. Expect about 13 rain days and 8 hours of sunshine per day. The sea is properly warm at 25°C.
Beach: goodCity: goodHiking: goodMore destinations for September →
Jeju in October
Daytime highs around 20°C, nights near 17°C. It is also the driest month of the year. Expect about 7 rain days and 9 hours of sunshine per day. The sea is pleasant for swimming at 22°C.
Beach: goodCity: excellentHiking: excellentMore destinations for October →
Jeju in November
Daytime highs around 15°C, nights near 11°C. Expect about 8 rain days and 7 hours of sunshine per day. The sea is on the fresh side at 19°C.
Beach: mixedCity: mixedHiking: goodMore destinations for November →
Jeju in December
Daytime highs around 10°C, nights near 6°C. Expect about 9 rain days and 6 hours of sunshine per day. The sea is cold at 17°C — not swimming weather.
Beach: poorCity: poorHiking: goodMore destinations for December →
Related destinations
More in South Korea: Seoul
Similar climate: Fukuoka, Japan · Shanghai, China · Tokyo, Japan · Kotor, Montenegro