Jeju weather in January
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Jeju January weather at a glance
In January, Jeju averages 6.2°C, with typical highs of 8.7°C and lows of 3.7°C. The historical average is 18 wet days and 74% humidity.
Jeju January temperature & humidity
Jeju January rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Jeju in January
A warm jacket or coat over knitwear works well, with an extra layer for mornings and evenings. Rain is frequent at roughly 18 days in the month; pack a rain jacket and water-resistant shoes.
- DaytimeWarm coat and layered tops · average high 8.7°C
- Morning & eveningInsulating coat, scarf and gloves · average low 3.7°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Jeju January sunrise & sunset times
2026 January · Local time (Asia/Seoul)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-01-01 | 07:38 | 17:37 | 9h 59m |
| 2026-01-15 | 07:38 | 17:49 | 10h 10m |
| 2026-01-31 | 07:31 | 18:04 | 10h 33m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Jeju
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
January weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Jeju weather like in January?
In January, Jeju averages 6.2°C, with typical highs of 8.7°C and lows of 3.7°C. The historical average is 18 wet days and 74% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Jeju in January?
There are about 18 wet days in January. Pack a rain jacket and water-resistant shoes.
What should I wear in Jeju in January?
A warm jacket or coat over knitwear works well, with an extra layer for mornings and evenings. Rain is frequent at roughly 18 days in the month; pack a rain jacket and water-resistant shoes.
What are the best months to visit Jeju?
Recent weather data rates May among the more comfortable months.
Where can I check Jeju weather in January in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Jeju in January?
On 2026-01-15, calculated sunrise is 07:38 and sunset is 17:49 in local time (Asia/Seoul). Times vary by date and terrain.
Jeju weather by month
More South Korea destinations in January
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations