Tromsø Weather in September
With daytime temperatures of 12°C (54°F) and nighttime lows of 5°C (41°F), September in Tromsø brings low temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Tromsø in September
With frequent rain showers this month, having an umbrella on hand will keep you dry. Typically, you can expect about 21 days of rain this month, with 141 mm (5.6 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Tromsø in September
In September, Tromsø sees low temperatures, with highs of 12°C (54°F). Nights drop to around 5°C (41°F). Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Tromsø in September
The area experiences limited sunny days, amounting to roughly 92 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Tromsø. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Tromsø's climate page.
Tromsø Temperature in September
Min Temperature
5°C (41°F)
Max Temperature
12°C (54°F)
Chance of Rain
70%
Precipitation
141 mm (5.6 in)
Rainy days
21 days
Sunshine
92 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Tromsø typically drop from around 12°C (54°F) at the start of September to approximately 8°C (46°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 7°C (45°F).
Average temperatures in September
Historical weather for Tromsø in September
Browse day-by-day weather records for Tromsø spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Tromsø historical weather extremes in September
The extremes listed below come from historical weather data collected in Tromsø from 1976 through 2025.
- The warmest day in September was on September 9, 2024, with a maximum of 23°C (73°F).
- On September 26, 1986, Tromsø saw its coldest September day with temperatures maxing out at 0°C (32°F).
- The lowest overnight temperature recorded in September was -7°C (19°F) (September 27, 1986).
Best Places in Norway in September
Find out more about the weather in Norway and which places have the best travel conditions in this month. See all of Norway in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Tromsø in September
Pack for changing conditions in Tromsø in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.What To Do in Tromsø in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Tromsø's climate page.
See the full Tromsø climate overview or explore weather in Norway.
