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Japan weather

Weather in Aichi for September 2025

Your guide to Aichi weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Aichi is slightly warmer than the historical average by 1.4 °C.

  • Expect cooler weather in the next days in Aichi with the forecast suggesting a temperature of 28.9 °C, lower than the historical average.

  • In general, the average temperature in Aichi at the beginning of September is 30.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.4 °C by the end of September.

    • Rain 🌧️

  • Aichi experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 242 mm.

    • More

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

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

Average dry days
3
Dry days
Average rainy days
27
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/22°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Aichi Weather September

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

Temperatures trend during September in Aichi

See the weather trend as well as the moving average line

September weather in Aichi 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
 31° /24° 12.2 mm 7
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 15 mm 7
3 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 14.5 mm 7
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /23° 16.2 mm 6
5 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /22° 30.1 mm 6
6 Sept. Patchy rain possible
Patchy rain possible
 31° /22° 6.8 mm 7
7 Sept. Partly cloudy
Partly cloudy
 31° /22° 1.2 mm 7
8 Sept. Patchy rain possible
Patchy rain possible
 28° /23° 9.6 mm 6
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /23° 11.7 mm 7
10 Sept. Partly cloudy
Partly cloudy
 31° /22° 6.4 mm 7
11 Sept. Light rain shower
Light rain shower
 30° /23° 9.2 mm 6
12 Sept. Overcast
Overcast
 31° /23° 4.8 mm 6
13 Sept. Overcast
Overcast
 32° /23° 0 mm 7
14 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 4.2 mm 1.8
15 Sept. Patchy rain possible
Patchy rain possible
 34° /26° 2.4 mm 2
16 Sept. Moderate rain
Moderate rain
 33° /25° 5.4 mm 1.9
17 Sept. Patchy rain possible
Patchy rain possible
 34° /25° 3 mm 2
18 Sept. Partly cloudy
Partly cloudy
 32° /26° 0 mm 7
19 Sept. Moderate rain
Moderate rain
 23° /22° 6.2 mm 5
20 Sept. Moderate rain
Moderate rain
 22° /21° 6.3 mm 5
21 Sept. Moderate rain
Moderate rain
 29° /21° 10.3 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 25° /22° 1.6 mm 5
23 Sept. Partly cloudy
Partly cloudy
 27° /21° 0 mm 6
24 Sept. Cloudy
Cloudy
 26° /22° 0.1 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 27° /23° 0.5 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 31° /24° 0.7 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 31° /24° 1.6 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 28° /21° 4.5 mm 7
29 Sept. Overcast
Overcast
 28° /20° 2.7 mm 7
30 Sept. Patchy rain possible
Patchy rain possible
 28° /20° 2 mm 6
Next
Important Notice
Our weather forecast for Aichi 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 Aichi forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Aichi weather in September vs August vs October

Compare September weather in Aichi 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
Temperatures32°/25°29°/22°23°/15°
Rainfall260 mm242 mm95 mm
Wind15.1 km/h12.5 km/h13 km/h
Humidity70%73%63%
Rainy days28 days27 days20 days
Dry days3 days3 days11 days

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

Aichi in September - FAQ

What are the expected maximum and minimum temperatures in Aichi during September?
During September, expect a variety of temperatures with highs around 29° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Aichi during September?
Significant rainfall exceeding 242 mm is expected in Aichi during September, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Aichi during September?
The average wind speed in Aichi during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Aichi in September?

As you prepare for your trip to Aichi 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 Aichi, 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 Aichi

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

UV exposure in Aichi during September

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

Get accurate weather forecasts for Aichi, located at latitude 35.181 and longitude 136.906. Stay updated with localized weather information tailored for Aichi.

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