When to go · Busan, South Korea
Best time to visit Busan
The sweet spot is June, October and September — averages 21°C, 11 rainy days, moderate crowds.
April–June and September–November. Late October is the Busan International Film Festival; July–August is beach season, hot and humid, with typhoon risk.
Humid subtropical by the sea: hot, wet summers (27–30°C) with the monsoon in July, mild dry winters (7–10°C by day), milder than Seoul.
The short answer
21°C · 11 rainy days · mid season
18°C · 5 rainy days · high season
23°C · 10 rainy days · mid season
Hardest months: February and January. averages a raw 5°C, 5 rainy days, few other visitors.
Month by month
| Month | Avg temp | Rain days | Crowds | Verdict |
|---|---|---|---|---|
| January | 3°C | 4d | low | Cold |
| February | 5°C | 5d | low | Cold |
| March | 9°C | 8d | mid | Chilly |
| April | 14°C | 9d | high | Mild |
| May | 18°C | 9d | high | Comfortable but damp |
| June | 21°C | 11d | mid | Comfortable but damp |
| July | 25°C | 14d | high | Wet |
| August | 26°C | 12d | high | Wet |
| September | 23°C | 10d | mid | Comfortable but damp |
| October | 18°C | 5d | high | Great weather, peak crowds |
| November | 12°C | 5d | mid | Chilly |
| December | 6°C | 4d | low | Cold |
Verdicts are read off the three columns to their left — temperature distance from 21°C first, then rainfall, with crowds breaking ties. Averages, so any given week can differ.
If you'd rather go cheap than perfect
January, February and December are low season in Busan — thinner crowds, and the months where accommodation is easiest to book late. Budget travellers already work to about $30–55 a day here; low season is where the accommodation share of that goes furthest.
Book the month you picked
Fares move with the same seasons as the crowds — the quiet months above are usually the cheap ones to fly.