Measurements:
°C
°F
Busan
40°F
SE 7 mph
Feels like: 34°F
Precip: 0%
World Resorts South Korea Busan Weather September Weather in Busan

Busan Weather: September

Average Day Temperature: 82.3°F
Average Night Temperature: 74.0°F
Sea Water Temperature: 79.5°F
Number of Sunny Days: 11 days
Sunshine Hours: 11.9 - 12.9 hours
Number of Rainy Days: 5 days
Precipitation Totals: 4.8 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 91°F. The lowest night temperature was 70°F. The average values for day and night temperatures during September were 82.9°F и 76.8°F respectivly.

Busan Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Busan was 80.8°F. The maximum and minimum values were 76.0°F and 84.2°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Busan is 4.8 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 11.0 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Busan in September is 7.1 hours.

Best Time to Visit Busan
The most sunny months:
January 21 days
December 20 days
May 18 days
The most warm months:
August 89.6 °F
July 85.6 °F
September 82.3 °F
Warmest sea temperature:
August 83.1 °F
September 79.5 °F
July 77.1 °F
The most cold months:
January 42.7 °F
February 45.7 °F
December 46.4 °F
The most rainy months:
August 7 days
July 6 days
September 5 days
The most windy months:
February 11 mph
January 11 mph
December 11 mph

Busan on the Weather Map

South Korea Resorts:
NAME
Busan +40
Incheon +34
Jeju +42
Muju +26
Seoul +30
Yongpyong +22
24 Hours Weather Forecast
Busan
Local time: 18:52
05 dec, friday
2100 38°F
SE
6 mph
06 dec, saturday
0000 38°F
E
9 mph
0300 36°F
E
8 mph
0600 36°F
E
9 mph
0900 38°F
E
9 mph
1200 44°F
E
9 mph
1500 50°F
E
11 mph
1800 48°F
E
13 mph