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Karuizawa
Weather averages
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Karuizawa Climate by Month

The graphs below provide an overview of the climate in Karuizawa (Nagano), 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: Nagano, Japan (52 KM, 32 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: Nagano, Japan (52 KM, 32 Miles).

Forecast for Karuizawa

Sat   Jul 27
30°C | 20°C
SE 4 km/h
17 mm
broken clouds and thunder

broken clouds and thunder

hourly forecast
Sun   Jul 28
31°C | 20°C
NW 7 km/h
0.6 mm
broken clouds and slight rain

broken clouds and slight rain

hourly forecast
Mon   Jul 29
32°C | 21°C
W 7 km/h
0.6 mm
broken clouds and chance of rain

broken clouds and chance of rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Karuizawa in Japan

During the months of May, June 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:

  • When is the rainy season in Karuizawa?
    Rainy season in Karuizawa occurs in the months of May, June, July, August, September and October.
  • Which is the warmest month in Karuizawa?
    August has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Karuizawa?
    The coldest month is January with an average maximum temperature of 4°C.
  • Which is the wettest month in Karuizawa?
    July tops the wettest month list with 255 mm of rainfall.
  • Which is the driest month in Karuizawa?
    December is the driest month with 63 mm of precipitation.
  • Which is the sunniest month in Karuizawa?
    May is the sunniest month with an average of 209 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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