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Yamanashi (Fujikawaguchiko)
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Weather in Yamanashi for September 2025

Your guide to Yamanashi weather in September - trends and predictions

    Temperatures

  • The forecast for the first days of September 2025 in Yamanashi predicts temperatures to be around 25 °C, close to the historical average.

  • In general, the average temperature in Yamanashi at the beginning of September is 25.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.3 °C by the end of September.

    • Rain 🌧️

  • Yamanashi experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 283.3 mm.

    • More

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

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

Average dry days
2
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/15°
Temperatures
Average wind speed
7 km/h
Avg max wind
Average humidity
88 %
Avg humidity

Yamanashi Weather September

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

What’s the Weather Like in Yamanashi This September?

Discover the average temperatures and weather trends across Yamanashi’s cities this September.
Patchy rain possibleFujikawaguchiko23 °C / 15 °CPatchy rain possibleFujiyoshida24 °C / 16 °CMore Locations

Temperatures trend during September in Yamanashi

See the weather trend as well as the moving average line

September weather in Yamanashi 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
 29° /17° 0.1 mm 2.2
2 Sept. Patchy rain possible
Patchy rain possible
 29° /17° 1.7 mm 2.2
3 Sept. Moderate rain
Moderate rain
 25° /17° 8 mm 1.9
4 Sept. Heavy rain
Heavy rain
 20° /17° 70.7 mm 4
5 Sept. Heavy rain
Heavy rain
 24° /16° 20.5 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
 22° /17° 0.7 mm 4
7 Sept. Partly cloudy
Partly cloudy
 28° /16° 0.1 mm 6
8 Sept. Patchy rain possible
Patchy rain possible
 23° /17° 2.3 mm 4
9 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 2.5 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 0.2 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 22° /15° 0.1 mm 4
12 Sept. Patchy rain possible
Patchy rain possible
 23° /14° 0.4 mm 4
13 Sept. Patchy rain possible
Patchy rain possible
 27° /18° 0.8 mm 5
14 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /16° 2.4 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 23° /16° 1.8 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 23° /15° 5.3 mm 5
17 Sept. Light rain shower
Light rain shower
 23° /15° 3.7 mm 5
18 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /16° 28.3 mm 6
19 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /17° 8.4 mm 6
20 Sept. Partly cloudy
Partly cloudy
 25° /15° 16.1 mm 6
21 Sept. Partly cloudy
Partly cloudy
 23° /14° 1 mm 5
22 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /14° 10.8 mm 5
23 Sept. Light rain shower
Light rain shower
 21° /14° 21.8 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 8.8 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 1.5 mm 5
26 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /11° 4.8 mm 5
27 Sept. Overcast
Overcast
 23° /12° 0.8 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 11.3 mm 5
29 Sept. Cloudy
Cloudy
 20° /13° 3.4 mm 5
30 Sept. Cloudy
Cloudy
 21° /12° 1.4 mm 5
Next
Important Notice
Our weather forecast for Yamanashi 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 Yamanashi forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
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Yamanashi weather in September vs August vs October

Compare September weather in Yamanashi 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
Temperatures26°/18°23°/15°17°/8°
Rainfall285 mm283 mm175 mm
Wind7 km/h7 km/h6.9 km/h
Humidity86%88%84%
Rainy days30 days28 days26 days
Dry days1 days2 days5 days

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

Yamanashi in September - FAQ

What are the expected maximum and minimum temperatures in Yamanashi during September?
During September, expect a variety of temperatures with highs around 23° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Yamanashi during September?
Significant rainfall exceeding 283.3 mm is expected in Yamanashi during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Yamanashi during September?
The average wind speed in Yamanashi during September is 7 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Yamanashi in September?

As you prepare for your trip to Yamanashi 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 Yamanashi, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
    • 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

September rainfall patterns in Yamanashi

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

UV exposure in Yamanashi during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Yamanashi
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Fuji-yoshida ShiMinamitsuru-gun
Top locations in Yamanashi
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FujikawaguchikoFujiyoshida
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Location coordinates Where is Yamanashi?

Get accurate weather forecasts for Yamanashi, located at latitude 35.489 and longitude 138.688. Stay updated with localized weather information tailored for Yamanashi.

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