The weather in Busan in September is hot. The average temperatures are between 21°C and 25°C.
You can expect about 3 to 8 days of rain in Busan during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Busan in September 2025.
If you’re planning to visit Busan in the near future, we highly recommend that you review the 14 day weather forecast for Busan before you arrive.
Temperatures
25° / 21°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
152
mm
Sun Hours
9.6
Hrs
