Best Time to Visit
🇰🇷 Jeju, South Korea · Asia
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
7°
4°
Fair
Feb
8°
4°
Good
Mar
11°
7°
Good
Apr
16°
11°
Great
May
20°
15°
Great
Jun
23°
19°
Good
Jul
27°
24°
Good
Aug
28°
25°
Good
Sep
25°
22°
Good
Oct
20°
17°
Great
Nov
15°
11°
Great
Dec
10°
6°
Good
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C | 4°C | 9 | 5h | 70% | 2 | Fair | View |
| February | 8°C | 4°C | 8 | 7h | 70% | 2 | Good | View |
| March | 11°C | 7°C | 10 | 8h | 70% | 6 | Good | View |
| AprilRecommended | 16°C | 11°C | 9 | 9h | 70% | 6 | Great | View |
| MayRecommended | 20°C | 15°C | 10 | 9h | 70% | 9 | Great | View |
| June | 23°C | 19°C | 13 | 8h | 70% | 9 | Good | View |
| July | 27°C | 24°C | 16 | 9h | 70% | 9 | Good | View |
| August | 28°C | 25°C | 17 | 10h | 70% | 9 | Good | View |
| September | 25°C | 22°C | 13 | 8h | 70% | 6 | Good | View |
| OctoberRecommended | 20°C | 17°C | 7 | 9h | 70% | 6 | Great | View |
| NovemberRecommended | 15°C | 11°C | 8 | 7h | 70% | 2 | Great | View |
| December | 10°C | 6°C | 8 | 6h | 70% | 2 | Good | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 16°C high, 11°C low
Mild conditions at 16°C (61°F), layers recommended. Occasional showers possible. Nights cool to 11°C (52°F).
Avg: 26°C high, 23°C low
Comfortable warmth at 26°C (79°F), ideal for outdoor activities. Rain is frequent, waterproof gear recommended. Nights cool to 23°C (73°F).
Avg: 20°C high, 17°C low
Mild conditions at 20°C (68°F), layers recommended. Occasional showers possible. Nights cool to 17°C (63°F).
Avg: 8°C high, 5°C low
Cool to cold at 8°C (46°F), warm clothing essential. Occasional showers possible. Nights cool to 5°C (41°F).
The least favorable time to visit Jeju is January. During this period, you can expect cold weather.
January
Challenges: cold weather
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Jeju during the best travel months (October, April, May), when temperatures range from 14°C to 19°C:
Jeju has a temperate oceanic climate (Koppen classification: Cfa). The warmest month is August with highs of 28°C, while the coldest month is January at just 7°C. Annual rainfall averages 1566mm across approximately 128 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 7 | 8 | 11 | 16 | 20 | 23 | 27 | 28 | 25 | 20 | 15 | 10 |
| Low °C | 4 | 4 | 7 | 11 | 15 | 19 | 24 | 25 | 22 | 17 | 11 | 6 |
| Rain Days | 9 | 8 | 10 | 9 | 10 | 13 | 16 | 17 | 13 | 7 | 8 | 8 |
| Rain mm | 62 | 64 | 99 | 121 | 129 | 234 | 225 | 227 | 188 | 92 | 66 | 59 |
| Sun h/day | 5 | 7 | 8 | 9 | 9 | 8 | 9 | 10 | 8 | 9 | 7 | 6 |
| Humidity % | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
| UV Index | 2 | 2 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 2 | 2 |
Considering alternatives to Jeju? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: