SeasonMapTrondheim weather in October
Norway
October in Trondheim: cold, rainy, with clean air — a good time to visit.
#7 of 12 months in Trondheim · #1135 of 1383 destinations to visit in October · comfort 60/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Trondheim in October
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 — October
| Daytime high | 10°C / 49°F | 🧥 cold |
|---|---|---|
| Nighttime low | 4°C / 39°F | |
| Feels like (high) | 7°C / 45°F | |
| Sea temperature | 9°C / 48°F | 🥶 cold sea |
| Rainfall | 102 mm / 4 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 3°C / 38°F | |
| Sunshine | 4.4 h/day | |
| Daylight | 9.8 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 2.4 cm / 0.9 in | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Trondheim in October
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.
Peak crowdsUKA student festival, Autumn break in Norway, school holidays in 4 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).
Fair weatherTrondheim's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Trondheim in October
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.
- Festival
UKA student festival
5 Oct – 5 Nov · usuallyMajor festivalCrowdedBook earlyNorway's largest cultural festival, run by students over about three weeks in the autumn, with revues, concerts and a temporary festival site at Samfundet. It runs in odd years only. Source ↗
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 October — FAQ
- Is October a good time to visit Trondheim?
- October in Trondheim: cold, rainy, with clean air — a good time to visit. It ranks #7 of 12 months for Trondheim on SeasonMap's comfort score (60/100).
- What is the weather like in Trondheim in October?
- In October, Trondheim averages a daily high of 9.7°C and a low of 3.8°C, with about 102 mm of rain over roughly 15.9 rainy days.
- What is the air quality in Trondheim in October?
- Trondheim has a mean US Air Quality Index of about 26 in October.
- Does it snow in Trondheim in October?
- Trondheim sees roughly 2.4 cm of snowfall in October.
Other months in Trondheim
Compare Trondheim in October
Warmer or cooler than Trondheim in October
Similar destinations in Northern Europe — October
Within 300 km: Geiranger's Dalsnibba and Eagle Road open around 20 May – 5 Nov.