Verdict: Fair month
Busan Weather in January
January is properly cold in Busan, with highs of only 7°C (45°F). Rain is occasional — about 5 wet days in a typical year. January is workable in Busan if your dates are fixed — just plan around the conditions.
Average high
7°C / 45°F
Average low
-3°C / 27°F
Rain days
~5
Precipitation
56 mm
What to pack for Busan in January
- A proper warm jacket, and a hat for mornings
- Comfortable walking shoes — every guide on this site assumes you'll use them
January against the rest of the year
Warmest in Busan: Aug (30°C / 86°F) · Coolest: Jan (7°C / 45°F) · Wettest: Jul (~20 rain days)
7°
-3°
Jan
9°
0°
Feb
14°
4°
Mar
18°
8°
Apr
22°
13°
May
26°
18°
Jun
28°
23°
Jul
30°
24°
Aug
26°
20°
Sep
21°
12°
Oct
15°
5°
Nov
7°
-2°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)