Lucerne (Luzern)
September
Weather in Lucerne for September 2026
Your guide to Lucerne weather in September - trends and predictions
Until now, September 2026 in Lucerne has been nearly identical to the historical average, with a temperature of 20.1 °C (showing only a slight deviation of 0.2 °C).
The forecast for the next days in Lucerne predicts a temperature of 17.2 °C, which is cooler than the historical average.
In general, the average temperature in Lucerne at the beginning of September is 23.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °C by the end of September.
The climate of Lucerne in September is notably wet, with an average of 13 rainy days, and a total of 121.3 mm of precipitation.
Temperatures
Rain 🌧️
17
Dry days
13
Rainy days
0
Snow days
19°/10°
Temperatures
8 km/h
Avg max wind
80 %
Avg humidity
Lucerne Weather September
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Temperatures trend during September in Lucerne
See the weather trend as well as the moving average line
September weather in Lucerne day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 22° /11° | 3 mm | 6 | |
| 2 Sept. |  Light rain shower | 23° /11° | 3.3 mm | 5 | |
| 3 Sept. |  Sunny | 24° /13° | 2.6 mm | 6 | |
| 4 Sept. | Patchy rain possible | 24° /11° | 4.3 mm | 5 | |
| 5 Sept. | Sunny | 23° /11° | 3 mm | 5 | |
| 6 Sept. | Sunny | 23° /11° | 0.3 mm | 6 | |
| 7 Sept. | Sunny | 25° /13° | 0.1 mm | 6 | |
| 8 Sept. | Sunny | 24° /14° | 6.7 mm | 5 | |
| 9 Sept. | Light rain shower | 20° /12° | 7.5 mm | 4 | |
| 10 Sept. |  Moderate rain at times | 19° /11° | 2.1 mm | 4 | |
| 11 Sept. | Patchy rain possible | 21° /11° | 2.2 mm | 5 | |
| 12 Sept. | Sunny | 20° /10° | 1.7 mm | 5 | |
| 13 Sept. |  Overcast | 20° /11° | 4 mm | 4 | |
| 14 Sept. | Overcast | 19° /11° | 4.7 mm | 4 | |
| 15 Sept. | Moderate or heavy rain shower | 21° /11° | 5.4 mm | 5 | |
| 16 Sept. | Moderate or heavy rain shower | 18° /9° | 6.6 mm | 4 | |
| 17 Sept. | Patchy rain possible | 17° /9° | 3.4 mm | 4 | |
| 18 Sept. |  Cloudy | 19° /8° | 3.5 mm | 4 | |
| 19 Sept. | Patchy rain possible | 18° /9° | 3.8 mm | 4 | |
| 20 Sept. | Patchy rain possible | 20° /9° | 0.5 mm | 4 | |
| 21 Sept. | Partly cloudy | 20° /9° | 1.9 mm | 4 | |
| 22 Sept. | Partly cloudy | 16° /7° | 10.4 mm | 4 | |
| 23 Sept. | Sunny | 17° /7° | 3 mm | 5 | |
| 24 Sept. | Sunny | 17° /8° | 2.4 mm | 4 | |
| 25 Sept. | Patchy rain possible | 18° /8° | 0.5 mm | 4 | |
| 26 Sept. | Patchy rain possible | 18° /8° | 3.8 mm | 4 | |
| 27 Sept. | Sunny | 22° /14° | 0 mm | 4.5 | |
| 28 Sept. | Sunny | 22° /16° | 0 mm | 4.2 | |
| 29 Sept. | Overcast | 21° /15° | 0 mm | 3.9 | |
| 30 Sept. | Sunny | 22° /15° | 0 mm | 4.1 | |
| Next | |||||
Important Notice
Our weather forecast for Lucerne 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 Lucerne forecast closer to your planned date for the most up-to-date weather information.
Change Month
Lucerne in September - FAQ
What are the expected maximum and minimum temperatures in Lucerne during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Lucerne during September?
Significant rainfall exceeding 121.3 mm is expected in Lucerne during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Lucerne during September?
The average wind speed in Lucerne during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Lucerne
Explore the daily rainfall trends and prepare for Lucernes September weather 💧
Typically, Lucerne has 13 rainy days in September with a total of 121.3 mm of rainfall.
UV exposure in Lucerne during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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