Nagano in december: average Weather, Temperature and Climate
Weather in Nagano in december 2026
The weather in Nagano-shi in december comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 1063.3cm
Weather at 6am
31°F
Snow showers
46% of time
23%
12%
11%
Weather at 12pm
43°F
Snow showers
33% of time
25%
18%
16%
Weather at 6pm
32°F
Snow showers
41% of time
18%
13%
13%
Weather at 3am
31°F
30%
23%
21%
9%
Evolution of daily average temperature and precipitation in Nagano in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Nagano in december.
The climate of Nagano in december is very bad
the weather in Nagano-shi in december is wet (with 6.8in of precipitation over 12 days). The situation is deteriorating compared to the previous month since in november there is an average of 5in of precipitation over 7 days.
The climate is rather cold around this city december. Plan to cover you well! The thermometer averaged maximum of 43°F. In the morning the temperature drops to 29°F. Thus, the mean temperature average on this month of december in Nagano-shi is 36°F. These temperatures are far removed from those records observed in Nagano-shi in december with a maximum record of 70°F in 2018 and a minimum record of 5°F in 2021. You can expect to have about 23 days with temperatures below 32°F, or 74% of time.
On this month of december, day length in Nagano-shi is generally 09:40. Sunrise is at 06:52 and sets at 16:32.
December: another location in Japan?
If you want to go to Japan in december, there are destinations with better weather than Nagano:
In december, Ogasawara Islands, Tanega-shima, Yakushima and 'Aiea have good weather.
Finally, Tokyo, Kochi, Okinawa, Hakone, Kagoshima (Kyushu) and Miyakojima have a tolerable climate, but better than Nagano.
Seasonal average climate and temperature of Nagano in december
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 36°F | ||||
| Highest temperature | 43°F | ||||
| Lowest temperature | 29°F | ||||
| Highest record temperature | 70°F (2018) | ||||
| Lowest record temperature | 5°F (2021) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 23 day(s) (74%) | ||||
| Wind | |||||
| Wind speed | 12km/h | ||||
| Wind temperature | 25°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 6.8in | ||||
| Number of days with rainfall | 12 day(s) (39%) | ||||
| Record daily rainfall | 1.6in (2009) | ||||
| Snowfall | 1063.3cm | ||||
| Other climate data | |||||
| Humidity | 89% | ||||
| Visibility | 7.73km | ||||
| Cloud cover | 46% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 8 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:52 | ||||
| Time of sunset | 16:32 | ||||
| Length of day | 09:40 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Nagano in december 2025:
34°F to 58°F
38°F to 58°F
41°F to 47°F
27°F to 34°F
27°F to 36°F
16°F to 40°F
23°F to 45°F
29°F to 43°F
29°F to 40°F
25°F to 43°F
29°F to 49°F
29°F to 36°F
20°F to 36°F
34°F to 41°F
32°F to 38°F
13°F to 40°F
22°F to 43°F
32°F to 38°F
25°F to 47°F
25°F to 52°F
34°F to 47°F
34°F to 40°F
29°F to 45°F
31°F to 45°F
40°F to 47°F
29°F to 41°F
16°F to 32°F
20°F to 38°F
22°F to 47°F
31°F to 45°F
31°F to 41°F
Map: other cities in Japan in december
Cities near Nagano:
| Karuizawa in december | very bad weather |
| Matsumoto in december | very bad weather |
| Joetsu in december | very bad weather |
| Maebashi in december | very bad weather |
| Toyama in december | very bad weather |
| Takayama in december | very bad weather |
| Nagaoka in december | very bad weather |
| Kofu in december | very bad weather |
| Gokayama in december | very bad weather |
| Nanao in december | bad weather |
| Nikko in december | very bad weather |
| Kanazawa in december | very bad weather |
Click over cities on the map for information about the weather in december.
Nagano
perfect weather
good
tolerable
bad
very bad
Weather data for Nagano in december:
Weather data for Nagano for december are derived from an average of the weather forecast since 2009 in Nagano. There is a margin of error and these forecasts are to be considered as general information only. The weather in Nagano 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 Nagano.