Karuizawa
December
Weather in Karuizawa for December 2025
Your guide to Karuizawa weather in December - trends and predictions
The climate of Karuizawa in December is quite snowy, averaging 14 snowy days.
In general, the average temperature in Karuizawa at the beginning of December is 6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 2 °C by the end of December.
Is December a good time to visit Karuizawa? check out the best time to travel to Karuizawa page.
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Snow Forecast ❄️
Temperatures
More
16
Dry days
1
Rainy days
14
Snow days
2°/-5°
Temperatures
13 km/h
Avg max wind
73 %
Avg humidity
Karuizawa in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  6° | 2  8° | 3  9° | 4  8° | 5 7° | 6 4° | 7  0° |
| 8  -1° | 9 -1° | 10 1° | 11  2° | 12 0° | 13 1° | 14 0° |
| 15 2° | 16 3° | 17 2° | 18 1° | 19 -2° | 20 0° | 21 7° |
| 22 0° | 23 -1° | 24 1° | 25  2° | 26 7° | 27 2° | 28 0° |
| 29 -1° | 30 2° | 31 2° |
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Temperatures trend during December in Karuizawa
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. | Sunny | 6° /-3° | 0 mm | 0 cm | |
| 2 Dec. | Overcast | 8° /-1° | 0 mm | 0 cm | |
| 3 Dec. | Partly cloudy | 9° /0° | 0 mm | 0 cm | |
| 4 Dec. | Patchy rain possible | 8° /1° | 0 mm | 0 cm | |
| 5 Dec. | Patchy rain possible | 7° /0° | 0.1 mm | 0 cm | |
| 6 Dec. | Light rain shower | 4° /-1° | 1.5 mm | 0 cm | |
| 7 Dec. | Light snow showers | 0° /-5° | 4.7 mm | 3.3 cm | |
| 8 Dec. | Moderate or heavy snow showers | -1° /-7° | 2.6 mm | 1.8 cm | |
| 9 Dec. | Partly cloudy | -1° /-9° | 0.1 mm | 0 cm | |
| 10 Dec. | Sunny | 1° /-7° | 0 mm | 0 cm | |
| 11 Dec. | Light snow | 2° /-4° | 0.3 mm | 0 cm | |
| 12 Dec. | Sunny | 0° /-7° | 0.1 mm | 0 cm | |
| 13 Dec. | Overcast | 1° /-6° | 0 mm | 0 cm | |
| 14 Dec. | Moderate or heavy snow showers | 0° /-6° | 2.5 mm | 1.6 cm | |
| 15 Dec. | Sunny | 2° /-7° | 0 mm | 0 cm | |
| 16 Dec. | Patchy rain possible | 3° /-4° | 0.1 mm | 0 cm | |
| 17 Dec. | Patchy light snow | 2° /-5° | 0.2 mm | 0 cm | |
| 18 Dec. | Light snow showers | 1° /-5° | 0.6 mm | 0.3 cm | |
| 19 Dec. | Moderate or heavy snow showers | -2° /-8° | 0.5 mm | 0.2 cm | |
| 20 Dec. | Overcast | 0° /-8° | 0 mm | 0 cm | |
| 21 Dec. | Patchy light snow | 7° /-4° | 1.1 mm | 0.5 cm | |
| 22 Dec. | Moderate or heavy snow showers | 0° /-5° | 5.8 mm | 4 cm | |
| 23 Dec. | Patchy light snow | -1° /-9° | 0.7 mm | 0.2 cm | |
| 24 Dec. | Patchy light snow | 1° /-8° | 0.5 mm | 0.2 cm | |
| 25 Dec. | Light freezing rain | 2° /-8° | 0 mm | 0 cm | |
| 26 Dec. | Patchy rain possible | 7° /-4° | 0.2 mm | 0 cm | |
| 27 Dec. | Moderate or heavy snow showers | 2° /-4° | 1.4 mm | 0.6 cm | |
| 28 Dec. | Moderate or heavy snow showers | 0° /-4° | 3 mm | 2 cm | |
| 29 Dec. | Moderate or heavy snow showers | -1° /-9° | 0.8 mm | 0.4 cm | |
| 30 Dec. | Sunny | 2° /-10° | 0 mm | 0 cm | |
| 31 Dec. | Moderate or heavy snow showers | 2° /-4° | 2.3 mm | 0.7 cm | |
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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.
Karuizawa in December - FAQ
What are the expected maximum and minimum temperatures in Karuizawa during December?
Brace for cold days with temperatures not exceeding 2° 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 29.1 mm across approximately 1 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Karuizawa in December 2025?
Karuizawa experiences an average snowfall of 15.8 cm during December, occurring over 14 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.
What to pack to Karuizawa in December?
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.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Thermal Wear: Base layers for cold destinations
- All-Weather Jacket: Waterproof and breathable
- Footwear
- Insulated Boots: For snowy and extremely cold temperatures
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
Karuizawa snow forecast December 2025
Track daily snowfall levels and discover Karuizawa’s snowy potential this December ❄️
December rainfall patterns in Karuizawa
Explore the daily rainfall trends and prepare for Karuizawas December weather 💧
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