Tromsø
September
Weather in Tromsø for September 2025
Your guide to Tromsø weather in September - trends and predictions
With an average of 2 snowy days, Tromsø usually enjoys a light touch of snow in September.
In general, the average temperature in Tromsø at the beginning of September is 11.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 8.7 °C by the end of September.
Tromsø experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 127.9 mm.
Snow Forecast ❄️
Temperatures
Rain 🌧️
3
Dry days
25
Rainy days
2
Snow days
9°/5°
Temperatures
19 km/h
Avg max wind
80 %
Avg humidity
Tromsø in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  12° | 2  12° | 3 11° | 4  11° | 5 10° | 6 11° | 7 11° |
| 8  13° | 9 13° | 10 13° | 11  11° | 12 12° | 13 9° | 14 7° |
| 15  9° | 16 10° | 17 8° | 18 8° | 19 9° | 20 7° | 21 7° |
| 22 9° | 23 8° | 24 7° | 25 8° | 26 9° | 27 10° | 28  10° |
| 29 9° | 30 8° |
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Temperatures trend during September in Tromsø
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 12° /5° | 3.7 mm | 0 cm | |
| 2 Sept. | Moderate rain at times | 12° /6° | 3.1 mm | 0 cm | |
| 3 Sept. | Moderate rain at times | 11° /6° | 4.1 mm | 0 cm | |
| 4 Sept. | Patchy rain possible | 11° /5° | 13.4 mm | 0 cm | |
| 5 Sept. | Light rain shower | 10° /6° | 12.7 mm | 0 cm | |
| 6 Sept. | Patchy rain possible | 11° /7° | 5.6 mm | 0 cm | |
| 7 Sept. | Patchy rain possible | 11° /8° | 2.7 mm | 0 cm | |
| 8 Sept. | Heavy rain at times | 13° /8° | 5.4 mm | 0 cm | |
| 9 Sept. | Patchy rain possible | 13° /9° | 4.8 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 13° /8° | 6.6 mm | 0 cm | |
| 11 Sept. | Overcast | 11° /7° | 7.5 mm | 0 cm | |
| 12 Sept. | Patchy rain possible | 12° /6° | 3.2 mm | 0 cm | |
| 13 Sept. | Patchy rain possible | 9° /4° | 1.5 mm | 0 cm | |
| 14 Sept. | Overcast | 7° /4° | 1.5 mm | 0 cm | |
| 15 Sept. | Cloudy | 9° /3° | 0.5 mm | 0 cm | |
| 16 Sept. | Partly cloudy | 10° /5° | 0.6 mm | 0 cm | |
| 17 Sept. | Light rain shower | 8° /4° | 3.1 mm | 0 cm | |
| 18 Sept. | Overcast | 8° /4° | 9.3 mm | 0 cm | |
| 19 Sept. | Patchy rain possible | 9° /3° | 1.9 mm | 0 cm | |
| 20 Sept. | Patchy rain possible | 7° /2° | 3.4 mm | 0 cm | |
| 21 Sept. | Cloudy | 7° /2° | 5.1 mm | 0 cm | |
| 22 Sept. | Patchy rain possible | 9° /3° | 1.9 mm | 0 cm | |
| 23 Sept. | Patchy rain possible | 8° /4° | 4.5 mm | 0 cm | |
| 24 Sept. | Moderate rain at times | 7° /4° | 3.5 mm | 0 cm | |
| 25 Sept. | Patchy rain possible | 8° /3° | 3.1 mm | 0 cm | |
| 26 Sept. | Light rain shower | 9° /4° | 4.1 mm | 0 cm | |
| 27 Sept. | Overcast | 10° /5° | 1.4 mm | 0 cm | |
| 28 Sept. | Sunny | 10° /5° | 0.6 mm | 0 cm | |
| 29 Sept. | Sunny | 9° /4° | 6.6 mm | 2.9 cm | |
| 30 Sept. | Partly cloudy | 8° /3° | 2.4 mm | 0.3 cm | |
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Important Notice
Our weather forecast for Tromsø in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tromsø forecast closer to your planned date for the most up-to-date weather information.
Tromsø in September - FAQ
What are the expected maximum and minimum temperatures in Tromsø during September?
During September, expect a variety of temperatures with highs around 9° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Tromsø during September?
Significant rainfall exceeding 127.9 mm is expected in Tromsø during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Tromsø in September 2025?
Tromsø experiences an average snowfall of 3.1925 cm during September, occurring over 2 days.
What are the typical wind conditions in Tromsø during September?
The average wind speed in Tromsø during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
Tromsø snow forecast September 2025
Track daily snowfall levels and discover Tromsø’s snowy potential this September ❄️
September rainfall patterns in Tromsø
Explore the daily rainfall trends and prepare for Tromsøs September weather 💧
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