Tromsø weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: July
What is the weather like in Tromsø in December?
In December, Tromsø is freezing cold: daytime highs average −3 °C, and nights often drop below freezing (−8 °C). The sea averages 6.3 °C – swimming is only for the hardy. The sun is scarce, with only about 0 hours a day. Precipitation, often as snow, falls on about 15 days, totalling 97 mm. Snow falls on about 13 days. All in all, December is not an ideal month for a holiday in Tromsø.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 7 | 6 | 7 |
| Day | −1° | −3° | −5° |
| Night | −5° | −8° | −10° |
| Sea | 8° | 6° | 5° |
| Sun | 0 h | 0 h | 0 h |
| Rain days | 15 | 15 | 15 |
More details for December
- Daylight
- Polar night
- UV index
- 0 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 15 km/haverage daily peak
- Cloud cover
- 76 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 13 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Oslo
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Tromsø in December: quick answers
Is Tromsø hot in December?
No. In December, Tromsø is freezing cold: daytime highs average −3 °C and nights drop to about −8 °C.
Can you swim in Tromsø in December?
Only if you don't mind cold water: in December the sea averages just 6.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Tromsø in December?
It rains often – on about 15 days, adding up to 97 mm.
Tromsø month by month
The whole year in TromsøAll destinations: NorwayWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)