Overall on the next 14 days there will be 6 days with snow in Longyearbyen and a total of 2 cm of snow.
It will be snowy on the following days:
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Longyearbyen 
Weather in December 2025
Overall on the next 14 days there will be 6 days with snow in Longyearbyen and a total of 2 cm of snow.
It will be snowy on the following days:
The weather in Longyearbyen in December is very cold with temperatures between -14°C and -9°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Longyearbyen during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Let it snow! You can expect Longyearbyen to be covered in white during the month of December. Be sure to bundle up when you venture outside, or take the opportunity to enjoy hot cocoa by the fire for warmth this month.
Our weather forecast can give you a great sense of what weather to expect in Longyearbyen in December 2025.
If you’re planning to visit Longyearbyen in the near future, we highly recommend that you review the 14 day weather forecast for Longyearbyen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -10° / -15° | 4 | 9 | 19 | 65 mm | Awful | Longyearbyen in January |
| February | -12° / -16° | 5 | 6 | 19 | 49 mm | Awful | Longyearbyen in February |
| March | -12° / -18° | 6 | 7 | 19 | 48 mm | Awful | Longyearbyen in March |
| April | -8° / -15° | 6 | 7 | 18 | 36 mm | Awful | Longyearbyen in April |
| May | -2° / -7° | 7 | 7 | 18 | 44 mm | Awful | Longyearbyen in May |
| June | 2° / -2° | 6 | 14 | 10 | 38 mm | Awful | Longyearbyen in June |
| July | 4° / 2° | 5 | 25 | 1 | 48 mm | Bad | Longyearbyen in July |
| August | 4° / 1° | 6 | 21 | 4 | 59 mm | Awful | Longyearbyen in August |
| September | 2° / -2° | 7 | 14 | 9 | 69 mm | Awful | Longyearbyen in September |
| October | -4° / -7° | 8 | 8 | 15 | 66 mm | Awful | Longyearbyen in October |
| November | -7° / -12° | 6 | 6 | 19 | 60 mm | Awful | Longyearbyen in November |
| December | -9° / -14° | 6 | 7 | 19 | 49 mm | Awful | Longyearbyen in December |
