Monthly climate guide
Trondheim weather in December
Expect freezing weather in Trondheim in December: afternoons reach about 0°C (32°F), while nights drop to around -4°C (25°F). Around 142 mm of rain falls over the month (wet), and skies are often cloudy. Daytime highs are 2°C cooler than November and 2°C warmer than January.
What stands out in December
- Seasonally, December counts as early winter in Trondheim.
- Only 2 months are cooler in Trondheim than December.
- There's little difference between day and night (around 4°C).
- Mornings start cold: the average low is -4°C, and frost is common.
Avg high
0°C
32°F
Avg low
-4°C
25°F
Rainfall
142 mm
wet
Humidity
95%
relative
Sky
84%
cloud · often cloudy
Trondheim weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -2°C / 28°F | -6°C / 22°F | 115 mm | 95% | 83% |
| February | -1°C / 30°F | -6°C / 22°F | 107 mm | 95% | 83% |
| March | 1°C / 34°F | -4°C / 24°F | 139 mm | 93% | 83% |
| April | 6°C / 42°F | -1°C / 31°F | 107 mm | 86% | 80% |
| May | 11°C / 53°F | 4°C / 38°F | 91 mm | 80% | 80% |
| June | 15°C / 59°F | 7°C / 45°F | 144 mm | 81% | 81% |
| July | 17°C / 63°F | 10°C / 50°F | 135 mm | 83% | 78% |
| August | 17°C / 62°F | 9°C / 49°F | 143 mm | 86% | 76% |
| September | 13°C / 55°F | 7°C / 44°F | 137 mm | 88% | 78% |
| October | 7°C / 45°F | 2°C / 36°F | 126 mm | 92% | 78% |
| November | 2°C / 36°F | -1°C / 30°F | 104 mm | 94% | 82% |
| December | 0°C / 32°F | -4°C / 25°F | 142 mm | 95% | 84% |
What to pack for December
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Trondheim?
Compare the months in the chart above to find your ideal window.
Best time to visit Trondheim →Other Norway cities in December
Cite or embed this data
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Trondheim weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/norway/trondheim/december
<a href="https://weathercompare.eu/weather/norway/trondheim/december">Trondheim weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/norway/trondheim" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Trondheim weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/norway/trondheim/december">Trondheim weather in December</a> – WeatherCompare</p>
Trondheim in December: quick answers
Is December a good time to visit Trondheim?
December is cool in Trondheim, with highs around 0°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Trondheim in December?
Average highs are about 0°C (32°F) and average lows about -4°C (25°F), based on 10 years of daily data.
Does it rain a lot in Trondheim in December?
Trondheim typically gets around 142 mm of rain in December — wet.
Figures are long-term averages for the area around Trondheim (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.