Karuizawa
December
Weather in Karuizawa for December 2026
Your guide to Karuizawa weather in December - trends and predictions
The climate of Karuizawa in December is quite snowy, averaging 11 snowy days.
Is December a good time to visit Karuizawa? check out the best time to travel to Karuizawa page.
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18
Dry days
2
Rainy days
11
Snow days
3°/-5°
Temperatures
13 km/h
Avg max wind
73 %
Avg humidity
Karuizawa Weather December
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Temperatures trend during December in Karuizawa
See the weather trend as well as the moving average line
December weather in Karuizawa day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | 8° /-2° | 0 mm | 0 cm | |
| 2 Dec. |  Overcast | 9° /0° | 0 mm | 0 cm | |
| 3 Dec. |  Partly cloudy | 8° /-1° | 0.7 mm | 0.3 cm | |
| 4 Dec. |  Patchy rain possible | 4° /-3° | 0.7 mm | 0.5 cm | |
| 5 Dec. | Patchy rain possible | 4° /-3° | 0.7 mm | 0.4 cm | |
| 6 Dec. | Light rain shower | 5° /-3° | 0.8 mm | 0 cm | |
| 7 Dec. |  Light snow showers | 4° /-5° | 2.3 mm | 1.7 cm | |
| 8 Dec. |  Light snow | 2° /-4° | 1.6 mm | 0.9 cm | |
| 9 Dec. | Partly cloudy | 0° /-7° | 0 mm | 0 cm | |
| 10 Dec. | Sunny | 4° /-5° | 0 mm | 0 cm | |
| 11 Dec. | Patchy rain possible | 5° /-3° | 1.4 mm | 0.2 cm | |
| 12 Dec. | Light snow | 0° /-8° | 1.4 mm | 1 cm | |
| 13 Dec. | Overcast | 1° /-8° | 0 mm | 0 cm | |
| 14 Dec. | Light snow | 2° /-4° | 4.4 mm | 1.6 cm | |
| 15 Dec. | Light snow | 2° /-5° | 2 mm | 1.3 cm | |
| 16 Dec. | Patchy rain possible | 3° /-6° | 0 mm | 0 cm | |
| 17 Dec. | Patchy rain possible | 5° /-5° | 0.3 mm | 0.2 cm | |
| 18 Dec. | Light snow showers | 2° /-4° | 0.3 mm | 0.2 cm | |
| 19 Dec. | Patchy rain possible | 3° /-5° | 0.2 mm | 0.1 cm | |
| 20 Dec. | Overcast | 5° /-4° | 0 mm | 0 cm | |
| 21 Dec. |  Light rain | 8° /-2° | 3.2 mm | 0.3 cm | |
| 22 Dec. | Light snow | 1° /-5° | 3 mm | 2 cm | |
| 23 Dec. | Patchy light snow | 0° /-8° | 0.4 mm | 0.1 cm | |
| 24 Dec. | Patchy light snow | 3° /-5° | 3.8 mm | 2.3 cm | |
| 25 Dec. |  Light freezing rain | 4° /-4° | 3.9 mm | 0 cm | |
| 26 Dec. | Patchy rain possible | 5° /-6° | 2.3 mm | 1.6 cm | |
| 27 Dec. |  Moderate or heavy snow showers | -1° /-9° | 0.7 mm | 0.3 cm | |
| 28 Dec. | Light snow | 0° /-7° | 1.5 mm | 1 cm | |
| 29 Dec. | Moderate or heavy snow showers | 2° /-7° | 0.4 mm | 0.2 cm | |
| 30 Dec. | Sunny | 3° /-7° | 0.3 mm | 0 cm | |
| 31 Dec. | Moderate or heavy snow showers | 3° /-5° | 1.2 mm | 0.4 cm | |
| Next | |||||
Important Notice
Our weather forecast for Karuizawa 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 Karuizawa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Karuizawa weather in December vs November vs January
Compare December weather in Karuizawa 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 | 10°/1° | 3°/-5° | 1°/-7° |
| Rainfall | 39 mm | 37 mm | 42 mm |
| Snowfall | 1 cm | 16 cm | 25 cm |
| Wind | 10.4 km/h | 12.7 km/h | 13.1 km/h |
| Humidity | 75% | 73% | 69% |
| Rainy days | 8 days | 2 days | 0 days |
| Snow days | 2 days | 11 days | 14 days |
| Dry days | 20 days | 18 days | 17 days |
Planning a trip to Karuizawa? Discover the best time to visit
Karuizawa in December - FAQ
What are the expected maximum and minimum temperatures in Karuizawa during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Karuizawa during December?
In December, Karuizawa can expect light to moderate rainfall, totaling 37.4 mm across approximately 2 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Karuizawa in December 2026?
Karuizawa experiences an average snowfall of 16.4 cm during December, occurring over 11 days.
What are the typical wind conditions in Karuizawa during December?
The average wind speed in Karuizawa during December is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
Karuizawa snow forecast December 2026
Track daily snowfall levels and discover Karuizawa’s snowy potential this December ❄️
On average, Karuizawa sees 11 snowy days during December, with approximately 16.4 cm of total snowfall.
December rainfall patterns in Karuizawa
Explore the daily rainfall trends and prepare for Karuizawas December weather 💧
Typically, Karuizawa has 2 rainy days in December with a total of 37.4 mm of rainfall.
What to pack to Karuizawa in December?
Cold & raw · highs around 3 °C, mostly dry
As you prepare for your trip to Karuizawa 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 Karuizawa, during December, is comfortable and enjoyable, regardless of the weather conditions.
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🧥 Clothing
👟 Footwear
🎒 Accessories
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