SeasonMapTrondheim weather in January
Norway
January in Trondheim: freezing, rainy, with clean air — not the time — 19 rainy days.
#12 of 12 months in Trondheim · #1354 of 1383 destinations to visit in January · comfort 26/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Trondheim in January
Other months in Trondheim
June in Trondheim barely gets dark — over twenty hours of daylight — and the forum's own saying is that if you are not happy with the weather, give it five minutes. Expect 10 to 20°C, some nights down to 5, occasional days above 25, and the honest possibility of cold, windy and rainy instead. They call June relatively dry, though the record still shows rain on about thirteen days. The packing list is a list precisely because you may need all of it: windproof and waterproof shell, a woollen sweater, long trousers, hiking shoes, and shorts. June versus July is not worth agonising over — the difference is statistical.
Add your own note from Trondheim's card on the map.
Trondheim climate normals — January
| Daytime high | -1°C / 30°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -6°C / 21°F | |
| Sea temperature | 4°C / 39°F | 🥶 cold sea |
| Rainfall | 128 mm / 5 in | 🌧 rainy |
| Rainy days | 19 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | -4°C / 24°F | |
| Sunshine | 1.3 h/day | |
| Daylight | 5.8 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 51.3 cm / 20.2 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Trondheim in January
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyChristmas holidays in Norway, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Trondheim's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherTrondheim's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Trondheim in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Aurora season
15 Sep – 31 Mar · usuallyFar enough south that it takes an active night rather than any dark one, but on those nights the lights are visible from the Bymarka hills fifteen minutes out of the centre. Coastal cloud is the usual spoiler.
- Season
Snow season
Ski seasonAbout 51 cm of snow falls in the month.
from the climate normals
Nearby, and something's on
Within 300 km of Trondheim — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Trondheim?
Trondheim in January — FAQ
- Is January a good time to visit Trondheim?
- January in Trondheim: freezing, rainy, with clean air — not the time — 19 rainy days. It ranks #12 of 12 months for Trondheim on SeasonMap's comfort score (26/100).
- What is the weather like in Trondheim in January?
- In January, Trondheim averages a daily high of -1°C and a low of -6°C, with about 127.5 mm of rain over roughly 19.4 rainy days.
- What is the air quality in Trondheim in January?
- Trondheim has a mean US Air Quality Index of about 32 in January.
- Does it snow in Trondheim in January?
- Trondheim sees roughly 51.3 cm of snowfall in January.
Other months in Trondheim
Compare Trondheim in January
Warmer or cooler than Trondheim in January
Similar destinations in Northern Europe — January
Within 300 km: Åre's Ski season around 5 Dec – 3 May, and Geiranger's Village closed for winter around 15 Oct – 15 Apr.