Verdict: Excellent month
Busan Weather in April
April hits the sweet spot in Busan — highs around 18°C (64°F), ideal for a full day on foot. Rain is occasional — about 7 wet days in a typical year. Overall, April is one of the best months of the year to be in Busan.
Average high
18°C / 64°F
Average low
8°C / 46°F
Rain days
~7
Precipitation
113 mm
What to pack for Busan in April
- Layers — t-shirts under a light jacket or sweater
- Evenings turn genuinely cool — pack a warm layer for after dark
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
April 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)