Joetsu in september: average Weather, Temperature and Climate
Weather in Joetsu in september 2025
The weather in Joetsu in september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 6
Weather at 6am
63°F
Clear/Sunny
35% of time
30%
22%
10%
Weather at 12pm
79°F
Clear/Sunny
39% of time
35%
18%
8%
Weather at 6pm
67°F
Moderate rain at times
39% of time
34%
18%
9%
Weather at 3am
63°F
35%
26%
23%
11%
Evolution of daily average temperature and precipitation in Joetsu in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Joetsu in september.
The climate of Joetsu in september is good
In september in Joetsu, the climate is wet (with 8.9in of rainfall over 10 days). The weather is better from the previous month since in august it receives an average of 9.4in of rainfall over 12 days.
The climate nice in that locality the month of september. The thermometer averaged maximum of 79°F. In the morning the temperature drops to 63°F. Thus, the mean temperature average in september in Joetsu is 72°F. Note that seasonal normals in contrast with those observed in Joetsu in september with a maximum record of 94°F in 2020 and a minimum record of 45°F in 2011. You You can hope to have about 4 days with temperatures up to 86°F, or 13 of the month.
In september in Joetsu, the days on average last 12:26. The sun rises at 05:29 and sunset is at 17:55.
With a good climate, the month of september is recommended to go in this city.
Seasonal average climate and temperature of Joetsu in september
Check below seasonal norms These datas are set from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 72°F | ||||
| Highest temperature | 79°F | ||||
| Lowest temperature | 63°F | ||||
| Highest record temperature | 94°F (2020) | ||||
| Lowest record temperature | 45°F (2011) | ||||
| Number of days at +86°F | 4 day(s) (13%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 78°F | ||||
| Lowest sea temperature | 74°F | ||||
| Highest sea temperature | 82°F | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 63°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 8.9in | ||||
| Number of days with rainfall | 10 day(s) (33%) | ||||
| Record daily rainfall | 5.6in (2013) | ||||
| Other climate data | |||||
| Humidity | 87% | ||||
| Visibility | 9.17km | ||||
| Cloud cover | 40% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:29 | ||||
| Time of sunset | 17:55 | ||||
| Length of day | 12:26 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Joetsu in september 2024:
70°F to 86°F
74°F to 83°F
70°F to 79°F
68°F to 83°F
70°F to 83°F
76°F to 81°F
70°F to 83°F
72°F to 81°F
70°F to 83°F
74°F to 86°F
77°F to 86°F
74°F to 85°F
72°F to 85°F
72°F to 85°F
77°F to 83°F
72°F to 83°F
74°F to 81°F
72°F to 81°F
70°F to 77°F
72°F to 85°F
67°F to 74°F
70°F to 74°F
63°F to 70°F
59°F to 79°F
59°F to 79°F
67°F to 79°F
68°F to 79°F
68°F to 74°F
65°F to 76°F
65°F to 76°F
Map: other cities in Japan in september
Cities near Joetsu:
| Nagano in september | good weather |
| Nagaoka in september | good weather |
| Karuizawa in september | tolerable weather |
| Sado island in september | tolerable weather |
| Toyama in september | tolerable weather |
| Matsumoto in september | good weather |
| Niigata in september | good weather |
| Maebashi in september | good weather |
| Nanao in september | tolerable weather |
| Wajima in september | good weather |
| Nikko in september | tolerable weather |
| Gokayama in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Joetsu
perfect weather
good
tolerable
bad
very bad
Weather data for Joetsu in september:
Weather data for Joetsu for september are derived from an average of the weather forecast since 2009 in Joetsu. There is a margin of error and these forecasts are to be considered as general information only. The weather in Joetsu 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 Joetsu.