Otaru weather in September (Hokkaido, Japan)

What can you expect from the weather in Otaru during September? This guide provides all the details you need.

In September, Otaru generally has pleasant temperatures and heavy rainfall. September is a summer month. Throughout the day, temperatures typically settle at around 21°C. But by evening, they drop to around 15°C.

Otaru in September usually receives heavy rainfall, averaging around 166 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 18 days of the month will see rainfall.

The area experiences a moderate amount of sunshine, with approximately 161 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with the best circumstances. While January, February, March, April, November and December tend to showcase less optimal conditions.

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

 

Otaru, monthly averages in September

Min Temperature 15°C  

Max Temperature 21°C  

Chance of Rain 60%  

Precipitation 166 mm  

Rainy days 18 days  

Humidity 71% *  

Sunshine 161 hours *  

Percentage Sunshine *  

* Data from: Sapporo, Japan (28 KM, 17 Miles).

Where to go in Japan in September

Find out more about the weather in Japan in September and which places have the best weather 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 Otaru in September?

For visitors traveling to Otaru, 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 in September.

Swimming

6/10

Camping

6/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Otaru.

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 climate conditions. Find out where to go with our weather planner.