Karuizawa in september: average Weather, Temperature and Climate
Weather in Karuizawa in september 2025
The weather in Karuizawa in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
59°F
Fog
45% of time
19%
14%
11%
Weather at 12pm
70°F
Moderate rain at times
39% of time
37%
14%
10%
Weather at 6pm
61°F
Moderate rain at times
42% of time
20%
16%
14%
Weather at 3am
59°F
40%
21%
20%
9%
Evolution of daily average temperature and precipitation in Karuizawa in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Karuizawa in september.
The climate of Karuizawa in september is tolerable
In september in Karuizawa, the climate is wet (with 10.7in of precipitation over 10 days). It should be noted an improvement from the previous month since in august it receives an average of 15in of precipitation over 18 days.
The climate nice around this city the month of september. The high seasonal norm is 72°F. The minimum is 59°F. Thus, the mean temperature average on this month of september in Karuizawa is 65°F. These temperatures are far removed from those records observed in Karuizawa in september with a maximum record of 86°F in 2010 and a minimum record of 41°F in 2011. You can expect to have about 26 days with temperatures over 65°F, or 87% of time.
In september in Karuizawa, the days on average last 12:26. The sun rises at 05:28 and sets at 17:54.
With good weather conditions, september is advisable to go in this city in Japan.
September: another location in Japan?
If you want to go to Japan in september, there are destinations with better weather than Karuizawa:
In september, Tokyo, Fukuoka, Hiroshima, Kochi, Kyoto and Nagoya have good weather.
Seasonal average climate and temperature of Karuizawa in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 59°F | ||||
| Highest record temperature | 86°F (2010) | ||||
| Lowest record temperature | 41°F (2011) | ||||
| Number of days at +86°F | 0 day(s) (0%) | ||||
| Number of days at +65°F | 26 day(s) (87%) | ||||
| Wind | |||||
| Wind speed | 10km/h | ||||
| Wind temperature | 59°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 10.7in | ||||
| Number of days with rainfall | 10 day(s) (34%) | ||||
| Record daily rainfall | 5.5in (2013) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 96% | ||||
| Visibility | 7km | ||||
| Cloud cover | 59% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:28 | ||||
| Time of sunset | 17:54 | ||||
| Length of day | 12:26 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Karuizawa in september 2024:
65°F to 83°F
68°F to 86°F
67°F to 76°F
58°F to 77°F
59°F to 83°F
61°F to 85°F
63°F to 86°F
65°F to 79°F
65°F to 81°F
63°F to 83°F
63°F to 83°F
63°F to 85°F
63°F to 86°F
63°F to 83°F
63°F to 81°F
61°F to 77°F
63°F to 85°F
63°F to 85°F
65°F to 77°F
65°F to 88°F
65°F to 77°F
63°F to 81°F
56°F to 74°F
52°F to 61°F
52°F to 68°F
63°F to 79°F
65°F to 77°F
61°F to 70°F
59°F to 63°F
54°F to 65°F
Map: other cities in Japan in september
Cities near Karuizawa:
| Maebashi in september | good weather |
| Nagano in september | good weather |
| Matsumoto in september | good weather |
| Kofu in september | tolerable weather |
| Joetsu in september | good weather |
| Nikko in september | tolerable weather |
| Tokyo in september | good weather |
| Takayama in september | tolerable weather |
| Nagaoka in september | good weather |
| Toyama in september | tolerable weather |
| Fuji in september | tolerable weather |
| Hakone in september | good weather |
Click over cities on the map for information about the weather in september.
Karuizawa
perfect weather
good
tolerable
bad
very bad
Weather data for Karuizawa in september:
Weather data for Karuizawa for september are derived from an average of the weather forecast since 2009 in Karuizawa. There is a margin of error and these forecasts are to be considered as general information only. The weather in Karuizawa can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Karuizawa.