Yamanashi weather in September (Yamanashi, Japan)

How does the weather in Yamanashi usually fare in September? Find all the essential weather information for this month in our guide.

Temperatures

In September, Yamanashi usually has high temperatures and heavy rainfall. Enjoy the summer season during this month. Throughout the day, temperatures typically settle at around 24°C. But by evening, they drop to around 15°C.

Precipitation

Yamanashi in September falls under the rainy season with heavy rainfall, averaging around 238 mm for the month. With peak rainfall occurring this month, heavy downpours are common. It's advisable to have a poncho on hand to manage the rain. On average, there are about 19 days with rain during this month.

Average sunshine

The area enjoys a balanced 152 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Should you favor a climate that's both dry and comfortably warm May typically offers the most agreeable circumstances. On the other hand, January, February, March, October and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Yamanashi climate page with graphs.

 

Yamanashi, monthly averages in September

Min Temperature 15°C  

Max Temperature 24°C  

Chance of Rain 64%  

Precipitation 238 mm  

Rainy days 19 days  

Humidity 71%  

Sunshine 152 hours  

Percentage Sunshine  

Where to go in Japan in September

Find out more about the weather in Japan and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Yamanashi, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

7/10

Camping

6/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Yamanashi.

Our site offers climate and forecast data for every country in the world. Are you going to Japan? On this website you can find historical weather averages for many cities in Japan. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.