Iwanai weather in August (Hokkaido, Japan)

Looking to travel to Iwanai in August? Here's what the weather might have in store during this month.

In August, Iwanai typically experiences high temperatures and heavy rainfall. August is a summer month. Throughout the day, temperatures typically settle at around 25°C. But by evening, they drop to around 18°C. On average, it has the peak temperatures of the year.

Iwanai in August usually receives heavy rainfall, averaging around 171 mm for the month. It records the year's peak rainfall, often coming down quite heavily. We recommend bringing a poncho, which will keep you dry. Rain is expected on roughly 18 days.

The city usually sees around 172 hours of sunlight, indicating a moderately sunny period.

If you're a fan of comfortable temperatures and drier conditions, August 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 Iwanai climate page with graphs.

 

Iwanai, monthly averages in August

Min Temperature 18°C  

Max Temperature 25°C  

Chance of Rain 61%  

Precipitation 171 mm  

Rainy days 18 days  

Humidity 75% *  

Sunshine 172 hours *  

Percentage Sunshine *  

* Data from: Sapporo, Japan (69 KM, 43 Miles).

Where to go in Japan in August

Find out more about the weather in Japan in August 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 this month?

For visitors traveling to Iwanai, 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 August.

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 Iwanai.

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.