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Weather in Yamagata for September 2025

Your guide to Yamagata weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Yamagata is slightly cooler than the historical average by -1.5 °C.

  • The forecast for the next days in Yamagata predicts a temperature of 21 °C, which is cooler than the historical average.

  • In general, the average temperature in Yamagata at the beginning of September is 29 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18 °C by the end of September.

    • Rain 🌧️

  • Yamagata experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 208.2 mm.

    • More

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

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

Average dry days
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/17°
Temperatures
Average wind speed
7 km/h
Avg max wind
Average humidity
87 %
Avg humidity

Yamagata Weather September

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

Temperatures trend during September in Yamagata

See the weather trend as well as the moving average line

September weather in Yamagata day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Fog
Fog
 33° /20° 0.6 mm 7
2 Sept. Light rain shower
Light rain shower
 32° /20° 4.7 mm 7
3 Sept. Light rain shower
Light rain shower
 29° /18° 0.9 mm 6
4 Sept. Light rain shower
Light rain shower
 25° /17° 14.7 mm 6
5 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /18° 17.5 mm 6
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /17° 11.7 mm 6
7 Sept. Fog
Fog
 28° /16° 0.4 mm 7
8 Sept. Light rain shower
Light rain shower
 24° /19° 14.5 mm 5
9 Sept. Light rain shower
Light rain shower
 28° /20° 12.3 mm 6
10 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /19° 10.5 mm 6
11 Sept. Fog
Fog
 29° /20° 4.3 mm 6
12 Sept. Mist
Mist
 29° /19° 0.3 mm 6
13 Sept. Fog
Fog
 26° /19° 1.4 mm 6
14 Sept. Mist
Mist
 28° /19° 0.4 mm 7
15 Sept. Patchy rain possible
Patchy rain possible
 27° /16° 0.6 mm 0.9
16 Sept. Partly cloudy
Partly cloudy
 30° /18° 0 mm 1.6
17 Sept. Patchy rain possible
Patchy rain possible
 28° /18° 1.9 mm 1.5
18 Sept. Moderate rain
Moderate rain
 23° /12° 14.2 mm 0.4
19 Sept. Partly cloudy
Partly cloudy
 21° /12° 0 mm 4
20 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 2.9 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 0.3 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 23° /13° 0.3 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 20° /13° 0.4 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 20° /13° 0.2 mm 4
26 Sept. Moderate rain
Moderate rain
 16° /15° 9.9 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 14° /14° 4.6 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 15° /14° 2.9 mm 3
29 Sept. Light rain shower
Light rain shower
 21° /14° 1.2 mm 5
30 Sept. Light rain shower
Light rain shower
 20° /14° 3.5 mm 5
Next
Important Notice
Our weather forecast for Yamagata 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 Yamagata forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Yamagata weather in September vs August vs October

Compare September weather in Yamagata 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°/21°26°/17°19°/9°
Rainfall216 mm208 mm72 mm
Wind6.6 km/h7.2 km/h11 km/h
Humidity87%87%83%
Rainy days27 days21 days18 days
Dry days4 days9 days13 days

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

Yamagata in September - FAQ

What are the expected maximum and minimum temperatures in Yamagata during September?
During September, expect a variety of temperatures with highs around 26° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Yamagata during September?
Significant rainfall exceeding 208.2 mm is expected in Yamagata during September, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Yamagata during September?
The average wind speed in Yamagata during September is 7 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Yamagata in September?

As you prepare for your trip to Yamagata 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 Yamagata, 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 Yamagata

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

UV exposure in Yamagata during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Yamagata
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Yamagata Shi

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Location coordinates Where is Yamagata?

Get accurate weather forecasts for Yamagata, located at latitude 38.233 and longitude 140.367. Stay updated with localized weather information tailored for Yamagata.

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