Trollhättan
September
Weather in Trollhättan for September 2026
Your guide to Trollhättan weather in September - trends and predictions
In general, the average temperature in Trollhättan at the beginning of September is 21.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.3 °C by the end of September.
Trollhättan experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 182.4 mm.
Temperatures
Rain 🌧️
22
Dry days
8
Rainy days
0
Snow days
21°/8°
Temperatures
15 km/h
Avg max wind
78 %
Avg humidity
Trollhättan Weather September
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Temperatures trend during September in Trollhättan
See the weather trend as well as the moving average line
September weather in Trollhättan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 21° /12° | 2.8 mm | 5 | |
| 2 Sept. |  Sunny | 19° /11° | 3.4 mm | 5 | |
| 3 Sept. |  Mist | 22° /10° | 0 mm | 5 | |
| 4 Sept. |  Cloudy | 24° /13° | 0.9 mm | 5 | |
| 5 Sept. | Sunny | 22° /13° | 9.4 mm | 6 | |
| 6 Sept. | Fog | 22° /12° | 0 mm | 5 | |
| 7 Sept. | Mist | 22° /12° | 0 mm | 5 | |
| 8 Sept. | Mist | 25° /13° | 0.1 mm | 6 | |
| 9 Sept. |  Overcast | 22° /13° | 0.9 mm | 5 | |
| 10 Sept. | Mist | 21° /12° | 4 mm | 5 | |
| 11 Sept. | Light rain shower | 18° /11° | 2.6 mm | 4 | |
| 12 Sept. | Overcast | 17° /9° | 3.4 mm | 4 | |
| 13 Sept. |  Partly cloudy | 17° /8° | 0.9 mm | 4 | |
| 14 Sept. | Overcast | 17° /7° | 3.8 mm | 4 | |
| 15 Sept. | Overcast | 15° /8° | 3 mm | 4 | |
| 16 Sept. | Fog | 17° /9° | 4.2 mm | 4 | |
| 17 Sept. | Cloudy | 17° /9° | 0.2 mm | 4 | |
| 18 Sept. | Light rain shower | 19° /10° | 0.9 mm | 5 | |
| 19 Sept. | Light rain shower | 19° /11° | 6 mm | 5 | |
| 20 Sept. | Light rain shower | 20° /12° | 1.8 mm | 5 | |
| 21 Sept. | Partly cloudy | 20° /12° | 0.3 mm | 5 | |
| 22 Sept. | Light rain shower | 17° /9° | 2.2 mm | 4 | |
| 23 Sept. | Light rain shower | 17° /8° | 0.4 mm | 4 | |
| 24 Sept. | Cloudy | 16° /8° | 2.1 mm | 4 | |
| 25 Sept. | Cloudy | 16° /8° | 3.5 mm | 4 | |
| 26 Sept. | Fog | 16° /8° | 0.1 mm | 4 | |
| 27 Sept. | Light rain shower | 15° /7° | 3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 16° /7° | 0.3 mm | 4 | |
| 29 Sept. |  Light drizzle | 14° /7° | 0.5 mm | 4 | |
| 30 Sept. | Patchy rain possible | 14° /7° | 0.1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Trollhättan 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 Trollhättan forecast closer to your planned date for the most up-to-date weather information.
Change Month
Trollhättan in September - FAQ
What are the expected maximum and minimum temperatures in Trollhättan during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Trollhättan during September?
Significant rainfall exceeding 182.4 mm is expected in Trollhättan during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Trollhättan during September?
The average wind speed in Trollhättan during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Trollhättan
Explore the daily rainfall trends and prepare for Trollhättans September weather 💧
UV exposure in Trollhättan during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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