Karuizawa weather in September (Nagano, Japan)
How does the weather in Karuizawa usually fare in September? Find out what kind of weather to expect during this month.
Temperatures
Typically, September in Karuizawa includes high temperatures and heavy rainfall. September is typically considered a summer month. The daytime often sees temperatures reaching 24°C, but nighttime brings a cool-down to 15°C.
Precipitation
Karuizawa in September falls under the rainy season with heavy rainfall, averaging around 224 mm for the month. This month experiences about 20 days of rain according to historical data.Average sunshine
The city usually sees around 142 hours of sunlight, indicating a moderately sunny period.If your ideal day consists of dry skies and moderate temperatures May generally stands out with the best circumstances. While January, February, March and December tend to showcase less optimal conditions.
Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Karuizawa's climate page.
Karuizawa, monthly averages in September
Min Temperature
15°C
Max Temperature
24°C
Chance of Rain
66%
Precipitation
224 mm
Rainy days
20 days
Humidity
74% *
Sunshine
142 hours *
Percentage Sunshine
*
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.
perfect weather
pleasant
tolerable
unpleasant
poor
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Karuizawa's climate page.
So, what should you wear in this month?
For visitors traveling to Karuizawa, 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.
Interested in more climate information?
This site provides you with all the information you need about the climate in Karuizawa.
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.
