Yamanashi Weather in September

September in Yamanashi brings high temperatures around 24°C (75°F) during the day, dropping to 15°C (59°F) at night, with the most rainfall of the year.

Rainfall in Yamanashi in September

Yamanashi is in the rainy season in September, with rain on around 19 days and an average of 238 mm (9.4 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.

Temperature in Yamanashi in September

September in Yamanashi brings typical temperatures with highs around 24°C (75°F) and lows of 15°C (59°F). September is part of summer. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 15°C (59°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Yamanashi in September

With about 152 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.

For Yamanashi itself, May generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Japan, check out our Yamanashi's climate page.

Yamanashi Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 64%  

Precipitation 238 mm (9.4 in)  

Rainy days 19 days  

Humidity 71%  

Sunshine 152 hours  

Percentage Sunshine  

What to Wear in Yamanashi in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Yamanashi in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Yamanashi's climate page.

More climate data for Yamanashi

Temperature Rainfall Sunshine Humidity

See the full Yamanashi climate overview or explore weather in Japan.