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Climate · Tromsø

Tromsø in September

Cool and wet, as the days shorten.

Typical weather, averaged over 30 years

September in Tromsø is cool: highs near 55°F, lows near 42°F. Rain falls on about five days a week, and the days shorten by 3 hours 4 minutes from the first week to the last.September in Tromsø is cool: highs near 13°C, lows near 6°C. Rain falls on about five days a week, and the days shorten by 3 hours 4 minutes from the first week to the last.

High
55°F13°Caverage
Low
42°F6°Caverage
Wet days
5a week · 65% of days
Daylight
13h 03mon average

Is September a good time to visit Tromsø?

September sits outside Tromsø's best months, which run from July to August. Expect cool days and rain on about five days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 55°F in September, against 24°F to 64°F through the year.Highs near 13°C in September, against -4°C to 18°C through the year.

Chance of a wet day

65% of days in September, against 51% to 65% through the year.

Cloud cover

68% cover in September, against 62% to 76% through the year.

Daylight

13h 03m in September, against No sunrise to 24h through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August63°17°low 49°low 9°4 wet days a weekRain on about four days a week.
  2. September55°13°low 42°low 6°5 wet days a weekRain on about five days a week.
  3. October45°7°low 33°low 1°4 wet days a weekRain on about four days a week.

Where Tromsø sits, in September

Europe/Oslo
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
5:54 AMsets 7:26 PM
Above the sea
10 mlow-lying
Latitude
69.7°Nnorthern hemisphere
Nearest of ours
Leinesfjord262 km south-west

The land around Tromsø, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Norway in September

high · low · wet days
See September on the planning mapThe whole year in Tromsø

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Tromsø. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (10 m) against the climate model's (207 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (10 m) against the climate model's (207 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.