Yamanashi (Fujikawaguchiko)
September
Weather in Yamanashi for September 2026
Your guide to Yamanashi weather in September - trends and predictions
In general, the average temperature in Yamanashi at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.3 °C by the end of September.
Yamanashi experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 283.3 mm.
Is September a good time to visit Yamanashi? check out the best time to travel to Yamanashi page.
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Temperatures
Rain 🌧️
More
2
Dry days
28
Rainy days
0
Snow days
23°/15°
Temperatures
7 km/h
Avg max wind
88 %
Avg humidity
Yamanashi Weather September
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What’s the Weather Like in Yamanashi This September?
Discover the average temperatures and weather trends across Yamanashi’s cities this September.
Temperatures trend during September in Yamanashi
See the weather trend as well as the moving average line
September weather in Yamanashi day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 27° /16° | 1.7 mm | 6 | |
| 2 Sept. |  Moderate or heavy rain shower | 25° /16° | 17.4 mm | 5 | |
| 3 Sept. | Patchy rain possible | 24° /16° | 15.6 mm | 5 | |
| 4 Sept. | Light rain shower | 21° /16° | 15.3 mm | 5 | |
| 5 Sept. | Patchy rain possible | 24° /15° | 31.8 mm | 5 | |
| 6 Sept. | Patchy rain possible | 24° /15° | 4.9 mm | 5 | |
| 7 Sept. | Patchy rain possible | 25° /15° | 3.3 mm | 6 | |
| 8 Sept. | Light rain shower | 23° /16° | 48.6 mm | 5 | |
| 9 Sept. | Moderate or heavy rain shower | 24° /16° | 14.9 mm | 5 | |
| 10 Sept. | Patchy rain possible | 26° /16° | 2.7 mm | 6 | |
| 11 Sept. | Light rain shower | 24° /15° | 5.1 mm | 5 | |
| 12 Sept. | Light rain shower | 25° /16° | 7.5 mm | 6 | |
| 13 Sept. | Patchy rain possible | 26° /15° | 0.9 mm | 6 | |
| 14 Sept. | Patchy rain possible | 26° /16° | 1.9 mm | 6 | |
| 15 Sept. | Light rain shower | 23° /16° | 2.5 mm | 5 | |
| 16 Sept. | Light rain shower | 23° /16° | 5.3 mm | 5 | |
| 17 Sept. | Light rain shower | 24° /15° | 3.6 mm | 5 | |
| 18 Sept. | Moderate or heavy rain shower | 25° /16° | 25 mm | 6 | |
| 19 Sept. | Light rain shower | 24° /16° | 11.3 mm | 5 | |
| 20 Sept. |  Partly cloudy | 24° /14° | 13.2 mm | 6 | |
| 21 Sept. | Partly cloudy | 23° /14° | 2 mm | 5 | |
| 22 Sept. | Moderate or heavy rain shower | 23° /13° | 9.6 mm | 5 | |
| 23 Sept. | Light rain shower | 20° /13° | 17.5 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /11° | 7.1 mm | 5 | |
| 25 Sept. | Patchy rain possible | 21° /11° | 1.2 mm | 5 | |
| 26 Sept. | Moderate or heavy rain shower | 23° /12° | 4.1 mm | 5 | |
| 27 Sept. | Light rain shower | 22° /13° | 1.3 mm | 5 | |
| 28 Sept. | Patchy rain possible | 22° /13° | 9.2 mm | 5 | |
| 29 Sept. |  Cloudy | 21° /13° | 2.7 mm | 5 | |
| 30 Sept. | Light rain shower | 20° /12° | 2.5 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
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.
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 26°/18° | 23°/15° | 17°/8° |
| Rainfall | 285 mm | 283 mm | 175 mm |
| Wind | 7 km/h | 7 km/h | 6.9 km/h |
| Humidity | 86% | 88% | 84% |
| Rainy days | 30 days | 28 days | 26 days |
| Dry days | 1 days | 2 days | 5 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 ☀️
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