Early autumn · Weather & things to do
Tromsø in September
The year's rain peaks now, with about 5.4 in (137 mm) falling in Tromsø, alongside highs near 52°F (11°C) and lows of 42°F (6°C).
Our comfort score puts it mid-table at 50/100, 4th of 12.
- Avg high
- 52°F (11°C)
- Avg low
- 42°F (6°C)
- Rain
- 5.4 in (137 mm)
- Humidity
- 90%
- Cloud cover
- 82%
- Daylight
- ~12 h 48 min
- Comfort score
- 50/100 · Fair
What September feels like
Afternoons only reach about 52°F (11°C), so plan on a warm jacket.
After dark, temperatures fall to about 42°F (6°C).
Expect regular rain: about 5.4 in (137 mm) falls in the month.
Skies are often grey, with average cloud cover around 82%.
Plan around September
September sits mid-table; the best months are July & August.
- Start of the wettest three-month stretch (September – November), which brings about 14.7 in (373 mm) in total.
- Comfort slips from 68/100 in August to 50/100.
- Our Lofoten & Tromsø route recommends Late Nov – Mar, so September falls outside its suggested window.
What to pack for September
- Insulated jackethighs only 52°F
- Rain jacket and waterproof shoesfrequent rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Tromsø in September
Weather can go either way, so the picks below mix open-air spots with indoor backups.
Ølhallen
Tromsø's oldest pub, opened in 1928 at the Mack brewery, pouring dozens of taps beside a stuffed polar bear.
Why now A warm sit-down stop when highs sit around 52°F.
Polar Museum
Museum in an 1830s customs warehouse on the harbour covering trapping, sealing and Amundsen and Nansen's expeditions.
Why now An indoor-leaning stop when highs sit around 52°F.
Fiskekompaniet
Harbourside seafood restaurant serving Arctic cod, king crab and seasonal skrei.
Why now Somewhere to warm up between colder walks.
Tromsø Cathedral
One of Norway's largest wooden churches, built in 1861 in the middle of the pedestrian centre.
Why now A way to spend part of a cold day out of the wind.
Polaria
Arctic aquarium in a building shaped like toppled ice floes, with bearded seals and polar-region exhibits.
Nearby in September
- Svolvær in September~146 mi · highs 53°F, 5.5 in rain · similar daytime temperatures, about as wet
- Reine in September~189 mi · highs 53°F, 4.4 in rain · similar daytime temperatures, drier
- Saariselkä in September~226 mi · highs 47°F, 3.0 in rain · 3°C (5°F) cooler by day, drier
- Rovaniemi in September~279 mi · highs 53°F, 3.2 in rain · similar daytime temperatures, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~231 m to Tromsø's ~18 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Tromsø in September: quick answers
Is September a good time to visit Tromsø?
It's middling, scoring 50/100. The best months are July & August, at up to 73. Expect highs of 52°F (11°C) and 5.4 in (137 mm) of rain. Our Lofoten & Tromsø route recommends Late Nov – Mar, so September is outside its suggested window.
How cold is Tromsø in September?
Average highs are 52°F (11°C) and average lows 42°F (6°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Tromsø in September?
Yes: about 5.4 in (137 mm) of rain falls across September on average, the wettest month of the year. The annual total is about 53.0 in (1347 mm).
What should I pack for Tromsø in September?
Bring insulated jacket (highs only 52°F), rain jacket and waterproof shoes (frequent rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Tromsø in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.