Trondheim
September
Weather in Trondheim for September 2027
Your guide to Trondheim weather in September - trends and predictions
In general, the average temperature in Trondheim at the beginning of September is 16.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.7 °C by the end of September.
The climate of Trondheim in September is notably wet, with an average of 15 rainy days, and a total of 116.9 mm of precipitation.
Is September a good time to visit Trondheim? check out the best time to travel to Trondheim page.
Temperatures
Rain 🌧️
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15
Dry days
15
Rainy days
0
Snow days
14°/7°
Temperatures
14 km/h
Avg max wind
80 %
Avg humidity
Trondheim Weather September
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Temperatures trend during September in Trondheim
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September weather in Trondheim day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 17° /7° | 0.2 mm | 0 cm | |
| 2 Sept. |  Patchy rain possible | 16° /8° | 1 mm | 0 cm | |
| 3 Sept. |  Light drizzle | 14° /8° | 1.4 mm | 0 cm | |
| 4 Sept. | Light rain | 18° /10° | 4.7 mm | 0 cm | |
| 5 Sept. | Light rain | 17° /10° | 6 mm | 0 cm | |
| 6 Sept. | Patchy rain possible | 16° /9° | 2.4 mm | 0 cm | |
| 7 Sept. | Light rain | 19° /10° | 4.5 mm | 0 cm | |
| 8 Sept. | Light rain | 19° /10° | 3.2 mm | 0 cm | |
| 9 Sept. | Light rain | 18° /9° | 5.8 mm | 0 cm | |
| 10 Sept. | Light rain | 14° /9° | 8.5 mm | 0 cm | |
| 11 Sept. | Light rain | 18° /8° | 2.7 mm | 0 cm | |
| 12 Sept. | Light rain | 15° /8° | 2.9 mm | 0 cm | |
| 13 Sept. |  Overcast | 13° /6° | 0.9 mm | 0 cm | |
| 14 Sept. | Overcast | 14° /5° | 0 mm | 0 cm | |
| 15 Sept. | Patchy rain possible | 15° /5° | 1.1 mm | 0 cm | |
| 16 Sept. | Light rain | 12° /7° | 3.5 mm | 0 cm | |
| 17 Sept. | Light rain | 13° /7° | 4.2 mm | 0 cm | |
| 18 Sept. |  Partly cloudy | 16° /7° | 0.4 mm | 0 cm | |
| 19 Sept. | Light rain | 15° /8° | 5.1 mm | 0 cm | |
| 20 Sept. | Light rain | 13° /7° | 4.5 mm | 0 cm | |
| 21 Sept. | Light rain | 12° /7° | 8.8 mm | 0 cm | |
| 22 Sept. |  Moderate rain | 11° /7° | 11.5 mm | 0 cm | |
| 23 Sept. | Light rain | 10° /7° | 7 mm | 0 cm | |
| 24 Sept. | Light rain | 10° /5° | 2.5 mm | 0 cm | |
| 25 Sept. | Light rain | 12° /5° | 7.7 mm | 0 cm | |
| 26 Sept. | Patchy rain possible | 13° /6° | 1.6 mm | 0 cm | |
| 27 Sept. | Light rain shower | 13° /5° | 2.3 mm | 0 cm | |
| 28 Sept. | Light rain | 12° /6° | 7.7 mm | 0.6 cm | |
| 29 Sept. | Light rain | 11° /6° | 3.2 mm | 0 cm | |
| 30 Sept. | Patchy rain possible | 12° /6° | 1.5 mm | 0 cm | |
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Important Notice
Our weather forecast for Trondheim 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 Trondheim forecast closer to your planned date for the most up-to-date weather information.
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Trondheim in September - FAQ
What are the expected maximum and minimum temperatures in Trondheim during September?
During September, expect a variety of temperatures with highs around 14° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Trondheim during September?
Significant rainfall exceeding 116.9 mm is expected in Trondheim during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Trondheim in September 2027?
Trondheim typically sees 0.6 cm of snowfall during September.
What are the typical wind conditions in Trondheim during September?
The average wind speed in Trondheim during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
Trondheim snow forecast September 2027
Track daily snowfall levels and discover Trondheim’s snowy potential this September ❄️
September rainfall patterns in Trondheim
Explore the daily rainfall trends and prepare for Trondheims September weather 💧
Typically, Trondheim has 15 rainy days in September with a total of 116.9 mm of rainfall.
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