Tromsø in September
In September, Tromsø averages 10°C (50°F) during the day and 5°C (41°F) at night, with around 12 days of rain (90 mm total).
Conditions are cool — bring a jacket for evenings. Plan for unsettled weather and bring rain gear.
September in Tromsø is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
10°C
Avg high
5°C
Avg low
12
Rain days
90 mm
Rainfall
1
Snow days
Tromsø in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -2°C / 28°F | -7°C / 19°F | 80 mm | 15 | 12 |
| February | -2°C / 28°F | -7°C / 19°F | 65 mm | 13 | 10 |
| March | -1°C / 30°F | -6°C / 21°F | 65 mm | 12 | 8 |
| April | 2°C / 36°F | -3°C / 27°F | 50 mm | 10 | 4 |
| May | 7°C / 45°F | 1°C / 34°F | 40 mm | 9 | 1 |
| June | 12°C / 54°F | 5°C / 41°F | 55 mm | 10 | 0 |
| July | 16°C / 61°F | 9°C / 48°F | 75 mm | 11 | 0 |
| August | 15°C / 59°F | 9°C / 48°F | 80 mm | 12 | 0 |
| September | 10°C / 50°F | 5°C / 41°F | 90 mm | 12 | 1 |
| October | 4°C / 39°F | 0°C / 32°F | 115 mm | 15 | 3 |
| November | 1°C / 34°F | -3°C / 27°F | 90 mm | 14 | 8 |
| December | -1°C / 30°F | -5°C / 23°F | 85 mm | 15 | 11 |
Other cities with similar September weather
Check the live 10-day forecast and sunrise/sunset.