Omachi weather in September (Nagano, Japan)

What should you pack for a trip to Omachi in September? Our guide gives you the essential weather details for this month.

Temperatures

Typically, September in Omachi includes high temperatures and heavy rainfall. September is part of summer. Anticipate daytime temperatures around 22°C, while night temperatures can drop to 13°C.

Precipitation

Omachi in September falls under the rainy season with heavy rainfall, averaging around 295 mm for the month. Typically around 19 days days of rainfall are expected.

Average sunshine

The area enjoys a balanced 115 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you prefer dry days with pleasant temperatures, typically offer the best circumstances. While tend to showcase less optimal conditions.

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

 

Omachi, monthly averages in September

Min Temperature 13°C  

Max Temperature 22°C  

Chance of Rain 63%  

Precipitation 295 mm  

Rainy days 19 days  

Sunshine 115 hours *  

Percentage Sunshine *  

Data from: Hakuba, Japan (21 KM, 13 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 Omachi, 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

6/10

Camping

6/10

Interested in more climate information?

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

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.