Climate of Jeju, South Korea
Area-weighted average across Jeju. For where people actually live and travel, see the cities below.
Jeju, a subdivision of Korea, Republic of, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 3.6°C / 38.5°F in January to 25°C / 77°F in August, with rainfall from 53 mm / 2.1 in to 297 mm / 11.7 in depending on the season (1849 mm / 72.8 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 3.6°C38.5°F | 70 mm2.8″ | — |
| February | 4.4°C39.9°F | 84 mm3.3″ | — |
| March | 7.6°C45.7°F | 117 mm4.6″ | — |
| April | 12.3°C54.1°F | 161 mm6.3″ | — |
| May | 16.2°C61.2°F | 188 mm7.4″ | — |
| June | 19.8°C67.6°F | 267 mm10.5″ | — |
| July | 24°C75.2°F | 297 mm11.7″ | — |
| August | 25°C77°F | 267 mm10.5″ | — |
| September | 21.3°C70.3°F | 185 mm7.3″ | — |
| October | 16.4°C61.5°F | 81 mm3.2″ | — |
| November | 11°C51.8°F | 79 mm3.1″ | — |
| December | 6°C42.8°F | 53 mm2.1″ | — |
Frequently asked questions
What is the best time to visit Jeju?
Jeju, Korea, Republic of does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 25°C / 77°F, and the driest is December at 53 mm / 2.1 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Jeju?
Jeju, Korea, Republic of has area-weighted monthly average temperatures ranging from 3.6°C / 38.5°F in January to 25°C / 77°F in August. Annual rainfall averages about 1849 mm / 72.8 in, with the wettest month being July (297 mm / 11.7 in) and the driest December (53 mm / 2.1 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Jeju?
The hottest month in Jeju is August, with an area-wide average temperature of 25°C / 77°F.
What is the coldest month in Jeju?
The coldest month in Jeju is January, with an area-wide average temperature of 3.6°C / 38.5°F.
When does it rain most in Jeju?
The wettest month in Jeju is July, averaging about 297 mm / 11.7 in of rainfall. The driest is December with about 53 mm / 2.1 in.