What January feels like in Trondheim
January is the coldest stretch of winter in Trondheim. Even the warmest hour of the day stays near freezing. The gap between afternoon and night is small, so nights drop well below freezing and the temperature hardly changes after dark. Moisture in the air gives the cold a damp edge.
Rain in Trondheim in January
Dry days are the exception, with rain on about every other day. A rainy day brings about 6 mm (0.2 in) on average — steady rain rather than a passing shower. Across the year Trondheim averages about 6.2 mm per rainy day, so January is typical.
Daylight and sunshine in January
Mid-month, Trondheim gets 5 h 36 min of daylight, from sunrise near 9:39 am to sunset near 3:15 pm. Since mid-December the day has gained 58 min. The sun is out for roughly 34% of those daylight hours, so skies are often cloudy.
How January compares to the rest of the year
In Trondheim's temperature order, January sits as the coolest month. Against December, the average high is 0.9°C (1.6°F) lower, with 4 mm less rain. This is the low point, and February starts to warm up. February averages a high of 0.4°C (32.7°F).
Who January suits
- Sightseeing: less ideal — rain falls on more than half the days.
- Parks & outdoor: less ideal — too cool to sit outside for long.
- Beach: less ideal — the sea air is too cool.
- Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.
Tips for visiting Trondheim in January
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Warm Layers
Insulated layers and warm shoes for the cold hours.
Quick questions
How warm is Trondheim in January?
Afternoons average -0.6°C (30.9°F) and nights about -5.5°C (22.1°F) — freezing by most people's standards. It is the coolest month of the year.
Does it rain a lot in Trondheim in January?
Yes, fairly — rain falls about every other day and totals about 96 mm, so an umbrella is worth carrying.
What should I wear in Trondheim in January?
The numbers point to rain protection and warm layers. There is little need to change for the evening.
Is January or February better for visiting Trondheim?
February scores better on our climate ranking (#8 of 12 vs #11), rated Poor against Poor. February is warmer and has fewer rainy days.