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Weather in Kōza-gun for September 2025

Your guide to Kōza-gun weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Kōza-gun has been nearly identical to the historical average, with a temperature of 28.8 °C (showing only a slight deviation of -0.4 °C).

  • The forecast for the next days in Kōza-gun predicts temperatures to be around 25 °C, close to the historical average.

  • In general, the average temperature in Kōza-gun at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Kōza-gun in September is notably wet, with an average of 12 rainy days, and a total of 121.2 mm of precipitation.

    • More

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

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

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/24°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Kōza-gun Weather September

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

Temperatures trend during September in Kōza-gun

See the weather trend as well as the moving average line

September weather in Kōza-gun day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 29° /26° 3.5 mm 7
2 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 0.3 mm 8
3 Sept. Light rain shower
Light rain shower
 29° /25° 10.5 mm 7
4 Sept. Patchy rain possible
Patchy rain possible
 27° /23° 15.1 mm 6
5 Sept. Cloudy
Cloudy
 26° /22° 46.9 mm 6
6 Sept. Sunny
Sunny
 28° /24° 0.1 mm 7
7 Sept. Sunny
Sunny
 30° /24° 0 mm 8
8 Sept. Patchy rain possible
Patchy rain possible
 32° /25° 1.5 mm 7
9 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 3.4 mm 7
10 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 4.5 mm 7
11 Sept. Sunny
Sunny
 30° /24° 3.5 mm 7
12 Sept. Patchy rain possible
Patchy rain possible
 27° /25° 7.6 mm 6
13 Sept. Sunny
Sunny
 29° /24° 0.5 mm 7
14 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0 mm 7
15 Sept. Cloudy
Cloudy
 30° /26° 0.6 mm 7
16 Sept. Light rain shower
Light rain shower
 29° /24° 5.7 mm 7
17 Sept. Partly cloudy
Partly cloudy
 29° /25° 0 mm 7
18 Sept. Moderate rain
Moderate rain
 31° /24° 6.7 mm 1.7
19 Sept. Moderate rain
Moderate rain
 22° /21° 17.8 mm 0.4
20 Sept. Moderate rain
Moderate rain
 24° /21° 5.2 mm 0.2
21 Sept. Patchy rain possible
Patchy rain possible
 26° /23° 1.9 mm 1.4
22 Sept. Patchy rain possible
Patchy rain possible
 22° /20° 1.6 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 24° /20° 0.1 mm 5
24 Sept. Sunny
Sunny
 26° /20° 0 mm 6
25 Sept. Moderate rain
Moderate rain
 21° /20° 7.2 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 27° /21° 0.1 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 25° /22° 2.3 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 25° /22° 2.3 mm 5
29 Sept. Moderate rain
Moderate rain
 23° /21° 16.8 mm 5
30 Sept. Moderate rain
Moderate rain
 22° /21° 5.4 mm 5
Next
Important Notice
Our weather forecast for Kōza-gun 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 Kōza-gun forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Kōza-gun weather in September vs August vs October

Compare September weather in Kōza-gun 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
Temperatures30°/26°28°/24°23°/19°
Rainfall226 mm121 mm152 mm
Wind21.3 km/h24.5 km/h24.9 km/h
Humidity74%74%71%
Rainy days17 days12 days14 days
Dry days14 days18 days17 days

Planning a trip to Kōza-gun? Discover the best time to visit

Kōza-gun in September - FAQ

What are the expected maximum and minimum temperatures in Kōza-gun during September?
During September, expect a variety of temperatures with highs around 28° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Kōza-gun during September?
Significant rainfall exceeding 121.2 mm is expected in Kōza-gun during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Kōza-gun during September?
The average wind speed in Kōza-gun during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Kōza-gun in September?

As you prepare for your trip to Kōza-gun 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 Kōza-gun, 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
  • 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 Kōza-gun

Explore the daily rainfall trends and prepare for Kōza-guns September weather 💧

UV exposure in Kōza-gun during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Kōza-gun?

Get accurate weather forecasts for Kōza-gun, located at latitude 35.381 and longitude 139.397. Stay updated with localized weather information tailored for Kōza-gun.

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