Longyearbyen
December
Weather in Longyearbyen for December 2025
Your guide to Longyearbyen weather in December - trends and predictions
Snow Avalanche Warning - See hour by hour.
The climate of Longyearbyen in December is quite snowy, averaging 11 snowy days.
According to Longyearbyen snow forecast for December 2025, 5 snowy days are expected until the end of the month. The closest date with snow is Thursday, 25 December.So far, December 2025 in Longyearbyen shows a warmer trend than usual by 2.9 °C.
Expect cooler weather in the next days in Longyearbyen with the forecast suggesting a temperature of -10.2 °C, lower than the historical average.
In general, the average temperature in Longyearbyen at the beginning of December is -9.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of -9 °C by the end of December.
Official Weather Alert ⚠️
Snow Forecast ❄️
Temperatures
20
Dry days
0
Rainy days
11
Snow days
-10°/-14°
Temperatures
14 km/h
Avg max wind
88 %
Avg humidity
Longyearbyen Weather December
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Temperatures trend during December in Longyearbyen
See the weather trend as well as the moving average line
December weather in Longyearbyen day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | -11° /-14° | 0.2 mm | 0.2 cm | |
| 2 Dec. | Sunny | -11° /-16° | 0.7 mm | 0.5 cm | |
| 3 Dec. |  Overcast | -13° /-16° | 0 mm | 0 cm | |
| 4 Dec. |  Moderate snow | -10° /-16° | 0.9 mm | 0.6 cm | |
| 5 Dec. | Overcast | -9° /-14° | 0 mm | 0 cm | |
| 6 Dec. |  Partly cloudy | -8° /-11° | 0.2 mm | 0.1 cm | |
| 7 Dec. |  Light snow | -5° /-9° | 0.2 mm | 0.1 cm | |
| 8 Dec. |  Heavy snow | -6° /-11° | 2.9 mm | 2.1 cm | |
| 9 Dec. | Heavy snow | -9° /-12° | 1.5 mm | 1.2 cm | |
| 10 Dec. | Heavy snow | -8° /-13° | 3.6 mm | 3 cm | |
| 11 Dec. | Overcast | -10° /-17° | 0.7 mm | 0.6 cm | |
| 12 Dec. |  Mist | -8° /-14° | 0.6 mm | 0.4 cm | |
| 13 Dec. |  Moderate or heavy snow showers | -6° /-12° | 7.7 mm | 6.1 cm | |
| 14 Dec. | Moderate snow | -4° /-11° | 0.3 mm | 0.2 cm | |
| 15 Dec. | Moderate snow | -4° /-9° | 0.3 mm | 0.1 cm | |
| 16 Dec. | Overcast | -7° /-11° | 0.2 mm | 0 cm | |
| 17 Dec. | Partly cloudy | -9° /-12° | 0 mm | 0 cm | |
| 18 Dec. | Overcast | -7° /-12° | 0 mm | 0 cm | |
| 19 Dec. | Overcast | -8° /-14° | 0 mm | 0 cm | |
| 20 Dec. | Overcast | -9° /-13° | 0.1 mm | 0 cm | |
| 21 Dec. | Partly cloudy | -8° /-12° | 0.1 mm | 0.1 cm | |
| 22 Dec. | Partly cloudy | -9° /-13° | 1.2 mm | 0.7 cm | |
| 23 Dec. |  Freezing fog | -10° /-14° | 0 mm | 0 cm | |
| 24 Dec. | Overcast | -12° /-17° | 0.1 mm | 0 cm | |
| 25 Dec. | Mist | -1° /-6° | 5.3 mm | 3.8 cm | |
| 26 Dec. |  Light snow showers | -8° /-16° | 1.1 mm | 0.7 cm | |
| 27 Dec. |  Light freezing rain | -14° /-17° | 0.2 mm | 0.1 cm | |
| 28 Dec. | Light freezing rain | -10° /-13° | 0.2 mm | 0.1 cm | |
| 29 Dec. | Overcast | -9° /-12° | 0.1 mm | 0.1 cm | |
| 30 Dec. | Overcast | -10° /-13° | 0 mm | 0 cm | |
| 31 Dec. | Overcast | -11° /-16° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Longyearbyen 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 Longyearbyen forecast closer to your planned date for the most up-to-date weather information.
Change Month
Longyearbyen in December - FAQ
What are the expected maximum and minimum temperatures in Longyearbyen during December?
Brace for cold days with temperatures not exceeding -10° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Longyearbyen during December?
In December, Longyearbyen can expect light to moderate rainfall, totaling 27.3 mm across approximately 0 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Longyearbyen in December 2025?
Longyearbyen experiences an average snowfall of 21.23 cm during December, occurring over 11 days.
What are the typical wind conditions in Longyearbyen during December?
The average wind speed in Longyearbyen during December is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
Longyearbyen snow forecast December 2025
Track daily snowfall levels and discover Longyearbyen’s snowy potential this December ❄️
On average, Longyearbyen sees 11 snowy days during December, with approximately 21.2 cm of total snowfall.
December rainfall patterns in Longyearbyen
Explore the daily rainfall trends and prepare for Longyearbyens December weather 💧
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Where is Longyearbyen?Get accurate weather forecasts for Longyearbyen, located at latitude 78.223 and longitude 15.647. Stay updated with localized weather information tailored for Longyearbyen.
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