Busan weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Fair
Best time to visit: April – June, September – October
What is the weather like in Busan in January?
In January, Busan is cold: daytime highs average 7 °C, and nights cool down to about 1 °C. The sea averages 14.7 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is rare: about 4 days bring 29 mm in total. All in all, January is a so-so month for a holiday in Busan.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 46 | 42 | 43 |
| Day | 9° | 7° | 9° |
| Night | 3° | 1° | 2° |
| Sea | 17° | 15° | 14° |
| Sun | 7 h | 7 h | 7 h |
| Rain days | 3 | 4 | 5 |
More details for January
- Daylight
- 10 h 2 min07:32 – 17:34
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 39 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %60 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Warm jacket
Busan in January: quick answers
Is Busan hot in January?
No. In January, Busan is cold: daytime highs average 7 °C and nights drop to about 1 °C.
Can you swim in Busan in January?
Only if you don't mind cold water: in January the sea averages just 14.7 °C. Comfortable swimming is possible from June to October.
Does it rain much in Busan in January?
Rain is rare: about 4 days bring 29 mm in total.
Busan month by month
The whole year in BusanAll destinations: South KoreaWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences