Kusatsu Weather in September

In Kusatsu, September brings high daytime temperatures around 24°C (75°F), with nights cooling to 15°C (59°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Kusatsu in September

As part of the rainy season, Kusatsu sees around 21 days of rain in September, with an average of 195 mm (7.7 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.

Temperature in Kusatsu in September

Daytime temperatures in Kusatsu reach 24°C (75°F) in September, dropping to 15°C (59°F) at night. This month falls in the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Kusatsu in September

The area experiences a moderate amount of sunshine, with approximately 142 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Should you favor a climate that's both dry and comfortably warm, May typically offers the most agreeable 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 Kusatsu's climate page.

Kusatsu Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 68%  

Precipitation 195 mm (7.7 in)  

Rainy days 21 days  

Humidity 74% *  

Sunshine 142 hours *  

Percentage Sunshine *  

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

What to Wear in Kusatsu 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! Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Kusatsu 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 Kusatsu's climate page.

More climate data for Kusatsu

Temperature Rainfall Sunshine Humidity

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