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Weather in Kumamoto for September 2025

Your guide to Kumamoto weather in September - trends and predictions

    Temperatures

  • The forecast for the first days of September 2025 in Kumamoto predicts a temperature of 31.1 °C, which is slightly above the historical average.

  • In general, the average temperature in Kumamoto at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Kumamoto experiences minimal rainfall in September.

    • More

  • Is September a good time to visit Kumamoto? check out the best time to travel to Kumamoto page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
32°/23°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Kumamoto Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
30°
2
Patchy rain possible
28°
3
Patchy rain possible
27°
4
Patchy rain possible
31°
5
Sunny
33°
6
Overcast
32°
7
Overcast
33°
8
Partly cloudy
34°
9
Sunny
35°
10
Patchy rain possible
31°
11
Overcast
35°
12
Cloudy
35°
13
Sunny
35°
14
Moderate rain at times
34°
15
Patchy rain possible
35°
16
Moderate or heavy rain shower
35°
17
Partly cloudy
35°
18
Patchy rain possible
35°
19
Partly cloudy
34°
20
Patchy rain possible
34°
21
Moderate or heavy rain shower
31°
22
Moderate or heavy rain shower
27°
23
Cloudy
27°
24
Cloudy
30°
25
Moderate or heavy rain shower
28°
26
Sunny
30°
27
Partly cloudy
31°
28
Patchy rain possible
31°
29
Patchy rain possible
31°
30
Patchy rain possible
29°

Temperatures trend during September in Kumamoto

See the weather trend as well as the moving average line

September weather in Kumamoto day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 30° /24° 1.5 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
 28° /23° 4.5 mm 5
3 Sept. Patchy rain possible
Patchy rain possible
 27° /23° 3.8 mm 5
4 Sept. Patchy rain possible
Patchy rain possible
 31° /23° 1.8 mm 6
5 Sept. Sunny
Sunny
 33° /23° 0 mm 7
6 Sept. Overcast
Overcast
 32° /24° 0 mm 7
7 Sept. Overcast
Overcast
 33° /24° 0 mm 7
8 Sept. Partly cloudy
Partly cloudy
 34° /24° 0 mm 8
9 Sept. Sunny
Sunny
 35° /24° 0 mm 8
10 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 0.3 mm 7
11 Sept. Overcast
Overcast
 35° /26° 0 mm 8
12 Sept. Cloudy
Cloudy
 35° /25° 0 mm 8
13 Sept. Sunny
Sunny
 35° /24° 0 mm 9
14 Sept. Moderate rain at times
Moderate rain at times
 34° /25° 2.5 mm 7
15 Sept. Patchy rain possible
Patchy rain possible
 35° /27° 0.4 mm 8
16 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 35° /26° 10.5 mm 8
17 Sept. Partly cloudy
Partly cloudy
 35° /24° 0 mm 9
18 Sept. Patchy rain possible
Patchy rain possible
 35° /23° 0.3 mm 8
19 Sept. Partly cloudy
Partly cloudy
 34° /26° 0 mm 8
20 Sept. Patchy rain possible
Patchy rain possible
 34° /25° 0.3 mm 7
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 13.4 mm 7
22 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /24° 81.2 mm 6
23 Sept. Cloudy
Cloudy
 27° /21° 0 mm 6
24 Sept. Cloudy
Cloudy
 30° /19° 0.2 mm 7
25 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /22° 3.5 mm 6
26 Sept. Sunny
Sunny
 30° /21° 0 mm 8
27 Sept. Partly cloudy
Partly cloudy
 31° /21° 0 mm 8
28 Sept. Patchy rain possible
Patchy rain possible
 31° /23° 0.3 mm 7
29 Sept. Patchy rain possible
Patchy rain possible
 31° /21° 0.2 mm 7
30 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 0.9 mm 6
Next
Important Notice
Our weather forecast for Kumamoto 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 Kumamoto forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Kumamoto weather in September vs August vs October

Compare September weather in Kumamoto with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures34°/25°32°/23°25°/18°
Rainfall281 mm114 mm171 mm
Wind13.9 km/h11.9 km/h10.9 km/h
Humidity68%69%73%
Rainy days14 days5 days16 days
Dry days17 days25 days15 days

Planning a trip to Kumamoto? Discover the best time to visit

Kumamoto in September - FAQ

What are the expected maximum and minimum temperatures in Kumamoto during September?
During September, expect a variety of temperatures with highs around 32° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Kumamoto during September?
Significant rainfall exceeding 114.1 mm is expected in Kumamoto during September, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Kumamoto during September?
The average wind speed in Kumamoto during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Kumamoto in September?

As you prepare for your trip to Kumamoto in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Kumamoto, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

September rainfall patterns in Kumamoto

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

UV exposure in Kumamoto during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Kumamoto
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Location coordinates Where is Kumamoto?

Get accurate weather forecasts for Kumamoto, located at latitude 32.806 and longitude 130.692. Stay updated with localized weather information tailored for Kumamoto.

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