Zao Onsen
December
Weather in Zao Onsen for December 2026
Your guide to Zao Onsen weather in December - trends and predictions
Expect heavy snowfall in Zao Onsen during December, with an average of 19 snowy days.
In general, the average temperature in Zao Onsen at the beginning of December is 5.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 3.1 °C by the end of December.
Is December a good time to visit Zao Onsen? check out the best time to travel to Zao Onsen page.
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Snow Forecast ❄️
Temperatures
More
9
Dry days
3
Rainy days
19
Snow days
5°/-1°
Temperatures
17 km/h
Avg max wind
86 %
Avg humidity
Zao Onsen Weather December
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Temperatures trend during December in Zao Onsen
See the weather trend as well as the moving average line
December weather in Zao Onsen day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain shower | 14° /4° | 1.6 mm | 0 cm | |
| 2 Dec. | Patchy rain possible | 10° /5° | 0.2 mm | 0 cm | |
| 3 Dec. |  Heavy snow | 8° /-1° | 13 mm | 4.5 cm | |
| 4 Dec. |  Moderate or heavy snow showers | 0° /-3° | 12 mm | 7 cm | |
| 5 Dec. | Moderate or heavy snow showers | 0° /-3° | 17.2 mm | 12.4 cm | |
| 6 Dec. |  Fog | 2° /-4° | 0.1 mm | 0 cm | |
| 7 Dec. | Patchy rain possible | 4° /-4° | 0.4 mm | 0 cm | |
| 8 Dec. | Light rain shower | 8° /0° | 6.8 mm | 1.3 cm | |
| 9 Dec. | Moderate or heavy snow showers | 3° /-1° | 5.6 mm | 4 cm | |
| 10 Dec. |  Light snow showers | 2° /-1° | 5.1 mm | 3.6 cm | |
| 11 Dec. |  Partly cloudy | 7° /-2° | 4.1 mm | 0.8 cm | |
| 12 Dec. | Moderate or heavy snow showers | 0° /-4° | 8.4 mm | 3.8 cm | |
| 13 Dec. | Light snow showers | 2° /-3° | 0 mm | 0 cm | |
| 14 Dec. | Heavy snow | 3° /-1° | 15.4 mm | 8.1 cm | |
| 15 Dec. | Moderate or heavy snow showers | 3° /-1° | 11.7 mm | 5.9 cm | |
| 16 Dec. | Heavy snow | 3° /-1° | 6.8 mm | 4.9 cm | |
| 17 Dec. | Moderate or heavy snow showers | 2° /0° | 5.1 mm | 3.7 cm | |
| 18 Dec. |  Light snow | 3° /-1° | 0.1 mm | 0.1 cm | |
| 19 Dec. |  Sunny | 6° /-2° | 0 mm | 0 cm | |
| 20 Dec. | Sunny | 11° /1° | 0 mm | 0 cm | |
| 21 Dec. |  Light drizzle | 14° /4° | 2.5 mm | 0 cm | |
| 22 Dec. | Light snow showers | 5° /-1° | 1.2 mm | 0.6 cm | |
| 23 Dec. | Partly cloudy | 3° /-2° | 0 mm | 0 cm | |
| 24 Dec. | Light drizzle | 5° /0° | 1.2 mm | 0 cm | |
| 25 Dec. | Light rain | 6° /3° | 16.5 mm | 2.5 cm | |
| 26 Dec. | Light snow showers | 4° /-6° | 9.4 mm | 1 cm | |
| 27 Dec. | Moderate or heavy snow showers | 0° /-6° | 3.8 mm | 2.5 cm | |
| 28 Dec. | Light snow showers | 3° /-3° | 3.2 mm | 2.3 cm | |
| 29 Dec. | Partly cloudy | 6° /-4° | 0 mm | 0 cm | |
| 30 Dec. | Heavy snow | 3° /-1° | 9.1 mm | 3 cm | |
| 31 Dec. | Moderate or heavy snow showers | 0° /-5° | 11.2 mm | 8.1 cm | |
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Important Notice
Our weather forecast for Zao Onsen 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 Zao Onsen forecast closer to your planned date for the most up-to-date weather information.
Change Month
Zao Onsen weather in December vs November vs January
Compare December weather in Zao Onsen 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 | 9°/3° | 5°/-1° | 0°/-5° |
| Rainfall | 136 mm | 172 mm | 210 mm |
| Snowfall | 17 cm | 80 cm | 128 cm |
| Wind | 14.8 km/h | 17 km/h | 21.7 km/h |
| Humidity | 80% | 86% | 86% |
| Rainy days | 7 days | 3 days | 0 days |
| Snow days | 6 days | 19 days | 28 days |
| Dry days | 17 days | 9 days | 3 days |
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Zao Onsen in December - FAQ
What are the expected maximum and minimum temperatures in Zao Onsen 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 Zao Onsen during December?
Significant rainfall exceeding 171.7 mm is expected in Zao Onsen during December, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Zao Onsen in December 2026?
Zao Onsen experiences an average snowfall of 80.2 cm during December, occurring over 19 days.
What are the typical wind conditions in Zao Onsen during December?
The average wind speed in Zao Onsen during December is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
Zao Onsen snow forecast December 2026
Track daily snowfall levels and discover Zao Onsen’s snowy potential this December ❄️
On average, Zao Onsen sees 19 snowy days during December, with approximately 80.2 cm of total snowfall.
December rainfall patterns in Zao Onsen
Explore the daily rainfall trends and prepare for Zao Onsens December weather 💧
Typically, Zao Onsen has 3 rainy days in December with a total of 171.7 mm of rainfall.
What to pack to Zao Onsen in December?
Cold & raw · highs around 5 °C, frequent showers
As you prepare for your trip to Zao Onsen 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 Zao Onsen, during December, is comfortable and enjoyable, regardless of the weather conditions.
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