Nagano Shi (Nagano)
December
Weather in Nagano Shi for December 2026
Your guide to Nagano Shi weather in December - trends and predictions
The climate of Nagano Shi in December is quite snowy, averaging 14 snowy days.
In general, the average temperature in Nagano Shi at the beginning of December is 7.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 3.3 °C by the end of December.
Is December a good time to visit Nagano Shi? check out the best time to travel to Nagano Shi page.
✨ Is December a good time to visit Nagano Shi? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
More
10
Dry days
7
Rainy days
14
Snow days
5°/-4°
Temperatures
8 km/h
Avg max wind
83 %
Avg humidity
Nagano Shi Weather December
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Temperatures trend during December in Nagano Shi
See the weather trend as well as the moving average line
December weather in Nagano Shi day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Moderate or heavy rain shower | 8° /-1° | 7.7 mm | 0.6 cm | |
| 2 Dec. |  Light rain | 8° /-1° | 2.7 mm | 0.3 cm | |
| 3 Dec. |  Light rain shower | 9° /-2° | 2.2 mm | 0.3 cm | |
| 4 Dec. |  Heavy rain at times | 6° /-2° | 8.6 mm | 2.3 cm | |
| 5 Dec. |  Light freezing rain | 5° /-3° | 3.6 mm | 2 cm | |
| 6 Dec. | Moderate rain at times | 8° /-3° | 5.1 mm | 0.4 cm | |
| 7 Dec. |  Moderate rain | 6° /-2° | 11.4 mm | 3.5 cm | |
| 8 Dec. | Moderate rain | 6° /-1° | 12.8 mm | 2.8 cm | |
| 9 Dec. |  Partly cloudy | 8° /-3° | 0.9 mm | 0.4 cm | |
| 10 Dec. | Patchy rain possible | 8° /-2° | 0.3 mm | 0 cm | |
| 11 Dec. | Light rain | 8° /-1° | 5.9 mm | 0.6 cm | |
| 12 Dec. | Heavy rain at times | 7° /-1° | 7.3 mm | 1.5 cm | |
| 13 Dec. | Light freezing rain | 6° /-2° | 4.9 mm | 0.2 cm | |
| 14 Dec. | Moderate rain | 5° /-3° | 12.1 mm | 3.2 cm | |
| 15 Dec. |  Light snow | 5° /-3° | 12.4 mm | 4 cm | |
| 16 Dec. | Light snow | 5° /-3° | 9.3 mm | 2.9 cm | |
| 17 Dec. | Light freezing rain | 5° /-4° | 14.2 mm | 4.8 cm | |
| 18 Dec. |  Moderate or heavy snow showers | 1° /-5° | 8.9 mm | 5 cm | |
| 19 Dec. | Light snow | 2° /-7° | 6.1 mm | 3.6 cm | |
| 20 Dec. | Light freezing rain | 4° /-5° | 3.4 mm | 1.8 cm | |
| 21 Dec. | Light freezing rain | 6° /-5° | 4.3 mm | 1.6 cm | |
| 22 Dec. | Moderate or heavy snow showers | 2° /-5° | 12.6 mm | 7.9 cm | |
| 23 Dec. | Light snow | 3° /-6° | 2.2 mm | 1.5 cm | |
| 24 Dec. | Light snow | 4° /-6° | 8.7 mm | 4.5 cm | |
| 25 Dec. |  Moderate snow | 3° /-5° | 13.2 mm | 5.1 cm | |
| 26 Dec. | Light freezing rain | 3° /-6° | 11.8 mm | 7.2 cm | |
| 27 Dec. | Light freezing rain | 2° /-7° | 7.1 mm | 4.4 cm | |
| 28 Dec. | Light rain | 3° /-6° | 5.6 mm | 3.5 cm | |
| 29 Dec. | Light snow | 5° /-5° | 4.4 mm | 2.4 cm | |
| 30 Dec. | Light snow | 4° /-5° | 10.8 mm | 3.9 cm | |
| 31 Dec. | Moderate or heavy snow showers | 2° /-5° | 13.2 mm | 6.6 cm | |
| Next | |||||
Important Notice
Our weather forecast for Nagano Shi in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Nagano Shi forecast closer to your planned date for the most up-to-date weather information.
Change Month
Nagano Shi weather in December vs November vs January
Compare December weather in Nagano Shi with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Moderate snow | Moderate snow |
| Temperatures | 12°/2° | 5°/-4° | 2°/-7° |
| Rainfall | 145 mm | 234 mm | 217 mm |
| Snowfall | 7 cm | 88 cm | 112 cm |
| Wind | 8.2 km/h | 7.9 km/h | 8.6 km/h |
| Humidity | 78% | 83% | 86% |
| Rainy days | 13 days | 7 days | 4 days |
| Snow days | 3 days | 14 days | 21 days |
| Dry days | 14 days | 10 days | 6 days |
Planning a trip to Nagano Shi? Discover the best time to visit
Nagano Shi in December - FAQ
What are the expected maximum and minimum temperatures in Nagano Shi during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Nagano Shi during December?
Significant rainfall exceeding 233.8 mm is expected in Nagano Shi during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Nagano Shi in December 2026?
Nagano Shi experiences an average snowfall of 88.5 cm during December, occurring over 14 days.
What are the typical wind conditions in Nagano Shi during December?
The average wind speed in Nagano Shi during December is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
Nagano Shi snow forecast December 2026
Track daily snowfall levels and discover Nagano Shi’s snowy potential this December ❄️
On average, Nagano Shi sees 14 snowy days during December, with approximately 88.5 cm of total snowfall.
December rainfall patterns in Nagano Shi
Explore the daily rainfall trends and prepare for Nagano Shis December weather 💧
Typically, Nagano Shi has 7 rainy days in December with a total of 233.8 mm of rainfall.
What to pack to Nagano Shi in December?
Cold & raw · highs around 5 °C, frequent showers
As you prepare for your trip to Nagano Shi in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Nagano Shi, during December, is comfortable and enjoyable, regardless of the weather conditions.
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