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Weather in Busan for September 2025

Your guide to Busan weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Busan has been nearly identical to the historical average, with a temperature of 27.8 °C (showing only a slight deviation of 0.5 °C).

  • Expect cooler weather in the next days in Busan with the forecast suggesting a temperature of 24.4 °C, lower than the historical average.

  • In general, the average temperature in Busan at the beginning of September is 27.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °C by the end of September.

    • Rain 🌧️

  • Busan in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 270.3 mm.

Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/21°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Busan Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
27°
2
Moderate or heavy rain shower
27°
3
Moderate or heavy rain shower
26°
4
Partly cloudy
28°
5
Sunny
28°
6
Moderate rain at times
27°
7
Moderate or heavy rain shower
28°
8
Patchy rain possible
28°
9
Sunny
27°
10
Moderate rain at times
26°
11
Patchy rain possible
28°
12
Cloudy
27°
13
Overcast
27°
14
Overcast
26°
15
Patchy rain possible
27°
16
Patchy rain possible
29°
17
Patchy rain possible
29°
18
Patchy rain possible
25°
19
Heavy rain
22°
20
Patchy rain possible
21°
21
Partly cloudy
24°
22
Cloudy
25°
23
Moderate rain
22°
24
Moderate rain
22°
25
Moderate rain
23°
26
Partly cloudy
24°
27
Patchy rain possible
24°
28
Partly cloudy
25°
29
Sunny
25°
30
Sunny
25°

Temperatures trend during September in Busan

See the weather trend as well as the moving average line

September weather in Busan day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /22° 88.6 mm 6
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /22° 13.5 mm 6
3 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /22° 3.8 mm 6
4 Sept. Partly cloudy
Partly cloudy
 28° /22° 0.6 mm 7
5 Sept. Sunny
Sunny
 28° /22° 2.4 mm 7
6 Sept. Moderate rain at times
Moderate rain at times
 27° /22° 17.4 mm 6
7 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /21° 1.9 mm 7
8 Sept. Patchy rain possible
Patchy rain possible
 28° /22° 0.9 mm 6
9 Sept. Sunny
Sunny
 27° /20° 2.3 mm 7
10 Sept. Moderate rain at times
Moderate rain at times
 26° /21° 0.9 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 28° /21° 1.9 mm 6
12 Sept. Cloudy
Cloudy
 27° /22° 1.2 mm 6
13 Sept. Overcast
Overcast
 27° /23° 4.9 mm 6
14 Sept. Overcast
Overcast
 26° /22° 4.5 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 27° /25° 4 mm 0.8
16 Sept. Patchy rain possible
Patchy rain possible
 29° /25° 0 mm 1.9
17 Sept. Patchy rain possible
Patchy rain possible
 29° /25° 2.8 mm 1.6
18 Sept. Patchy rain possible
Patchy rain possible
 25° /21° 4.9 mm 0.7
19 Sept. Heavy rain
Heavy rain
 22° /20° 37 mm 0.2
20 Sept. Patchy rain possible
Patchy rain possible
 21° /20° 2.7 mm 5
21 Sept. Partly cloudy
Partly cloudy
 24° /19° 0 mm 6
22 Sept. Cloudy
Cloudy
 25° /21° 0 mm 5
23 Sept. Moderate rain
Moderate rain
 22° /21° 17.4 mm 5
24 Sept. Moderate rain
Moderate rain
 22° /20° 13.2 mm 5
25 Sept. Moderate rain
Moderate rain
 23° /21° 7.5 mm 5
26 Sept. Partly cloudy
Partly cloudy
 24° /21° 0 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 24° /21° 0.7 mm 5
28 Sept. Partly cloudy
Partly cloudy
 25° /20° 0 mm 6
29 Sept. Sunny
Sunny
 25° /19° 1.6 mm 6
30 Sept. Sunny
Sunny
 25° /18° 3.9 mm 6
Next
Important Notice
Our weather forecast for Busan in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Busan forecast closer to your planned date for the most up-to-date weather information.
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Busan in September - FAQ

What are the expected maximum and minimum temperatures in Busan during September?
During September, expect a variety of temperatures with highs around 26° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Busan during September?
Significant rainfall exceeding 270.3 mm is expected in Busan during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Busan during September?
The average wind speed in Busan during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Busan

Explore the daily rainfall trends and prepare for Busans September weather 💧

UV exposure in Busan during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Busan, located at latitude 35.102 and longitude 129.03. Stay updated with localized weather information tailored for Busan.

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