Yearly weather and climate in Jeju City, South Korea
The yearly weather in Jeju City runs from around 4°C in January to 30°C in August. April is the driest month at 10 rainy days; July the wettest at 20. Here is the annual climate data, so you know what you are packing for.
Best time to visit
Weather is fairly consistent year-round. Pack for stable conditions.
Sunshine
Expect up to 10.4 hours of clear skies in Aug, but only 5.4 hours in Jan. Pack sunglasses and SPF accordingly.
Rainfall
It rains the most in Sep (425mm over 18 days). A reliable rain jacket is a must-have if visiting then.
Day-to-night swings
Temperatures typically drop by 5°C from day to night. Make sure to pack layers for the evenings.
Average temperatures and rainfall
Daily highs and lows in Jeju City, averaged over 10 years of recorded weather, with the number of days it typically rains.
- 947°438°16Jan
- 1050°440°14Feb
- 1458°745°13Mar
- 1763°1151°10Apr
- 2271°1560°11May
- 2678°2069°14Jun
- 2985°2576°20Jul
- 3087°2678°19Aug
- 2680°2272°18Sep
- 2170°1661°10Oct
- 1662°1151°12Nov
- 1049°541°15Dec
Bars span the average daily low to high. Numbers under the drop are rainy days per month (1mm or more) — hover a month for its total rainfall. Apr is typically driest at 10 days (125mm); Jul the wettest at 20 days (263mm).
| Month | Average high | Average low | Rainy days | Total rainfall |
|---|---|---|---|---|
| Jan | 9°C | 4°C | 16 | 128mm |
| Feb | 10°C | 4°C | 14 | 115mm |
| Mar | 14°C | 7°C | 13 | 152mm |
| Apr | 17°C | 11°C | 10 | 125mm |
| May | 22°C | 15°C | 11 | 158mm |
| Jun | 26°C | 20°C | 14 | 227mm |
| Jul | 29°C | 25°C | 20 | 263mm |
| Aug | 30°C | 26°C | 19 | 228mm |
| Sep | 26°C | 22°C | 18 | 425mm |
| Oct | 21°C | 16°C | 10 | 86mm |
| Nov | 16°C | 11°C | 12 | 153mm |
| Dec | 10°C | 5°C | 15 | 86mm |
Weather data by Open-Meteo.com
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