Achi weather in September (Nagano, Japan)

What kind of temperatures can you expect in Achi during September? Check out our in-depth weather guide for this month.

Temperatures

The month of September in Achi typically brings high temperatures and heavy rainfall. September is part of the summer season. Throughout the day, temperatures can rise to about 25°C. At night, they generally drop to 16°C.

Precipitation

Achi in September falls under the rainy season with heavy rainfall, averaging around 258 mm for the month. Historically, approximately 19 days this month are expected to have rain.

Average sunshine

The month experiences a moderate amount of sunlight, with 151 hours hours. A nice balance between sunshine and clouds.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Achi. May, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, April, June, July, October, November 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 Achi climate page with graphs.

 

Achi, monthly averages in September

Min Temperature 16°C  

Max Temperature 25°C  

Chance of Rain 62%  

Precipitation 258 mm  

Rainy days 19 days  

Humidity 71% *  

Sunshine 151 hours *  

Percentage Sunshine 37% *  

Data from: Nagoya, Japan (73 KM, 45 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 Achi, 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 Achi.

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.