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Iwanai
Weather averages
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Iwanai Climate by Month

The graphs below provide an overview of the climate in Iwanai (Hokkaido), Japan. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year
* Data from: Sapporo, Japan (69 KM, 43 Miles).

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average humidity

The mean monthly relative humidity over the year
* Data from: Sapporo, Japan (69 KM, 43 Miles).

Forecast for Iwanai

Wed   Nov 06
7°C | 1°C
W 7 km/h
5.3 mm
broken clouds and chance of rain

broken clouds and chance of rain

hourly forecast
Thu   Nov 07
5°C | 1°C
NW 22 km/h
6.5 mm
partly cloudy and rain

partly cloudy and rain

hourly forecast
Fri   Nov 08
8°C | 0°C
W 25 km/h
0.6 mm
broken clouds and chance of slight rain

broken clouds and chance of slight rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Iwanai in Japan

During the months of July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which months have the greatest rainfall in Iwanai?
    Most rainfall (rainy season) is seen in August and September.
  • When is winter in Iwanai?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Iwanai?
    August has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Iwanai?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Iwanai?
    August tops the wettest month list with 171 mm of rainfall.
  • Which is the driest month in Iwanai?
    April is the driest month with 78 mm of precipitation.
  • Which is the sunniest month in Iwanai?
    May is the sunniest month with an average of 199 hours of sunshine.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     


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