Kusatsu weather in September (Gunma, Japan)

Will it be warm or cold in Kusatsu this September? Check out our in-depth weather guide for this month.

Temperatures

In September, Kusatsu typically experiences high temperatures and heavy rainfall. September is typically considered a summer month. Daytime temperatures generally peak at 24°C, but after sunset, they often decrease to around 15°C.

Precipitation

Kusatsu in September falls under the rainy season with heavy rainfall, averaging around 195 mm for the month. According to historical climate patterns, there are usually around 21 days days of rain.

Average sunshine

The month brings about 142 hours of sunlight, offering a comfortable mix of sun and shade.

If you prefer dry days with pleasant temperatures, May typically offers the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

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

 

Kusatsu, monthly averages in September

Min Temperature 15°C  

Max Temperature 24°C  

Chance of Rain 68%  

Precipitation 195 mm  

Rainy days 21 days  

Humidity 74% *  

Sunshine 142 hours *  

Percentage Sunshine *  

Data from: Nagano, Japan (34 KM, 21 Miles).

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 Kusatsu, 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 Kusatsu.

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.