Lucerne (Luzern)
September
Weather in Lucerne for September 2025
Your guide to Lucerne weather in September - trends and predictions
In general, the average temperature in Lucerne at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.
Lucerne experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 111.3 mm.
Temperatures
Rain 🌧️
5
Dry days
25
Rainy days
0
Snow days
20°/10°
Temperatures
8 km/h
Avg max wind
79 %
Avg humidity
Lucerne in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  25° | 3 25° | 4  24° | 5 25° | 6 25° | 7 25° |
| 8 24° | 9 21° | 10  21° | 11 22° | 12 21° | 13  20° | 14 18° |
| 15 20° | 16 19° | 17 17° | 18  18° | 19 16° | 20 18° | 21 19° |
| 22 17° | 23 19° | 24 18° | 25 19° | 26 18° | 27 17° | 28 16° |
| 29 17° | 30 16° |
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Temperatures trend during September in Lucerne
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 24° /11° | 0.8 mm | 6 | |
| 2 Sept. | Sunny | 25° /12° | 2 mm | 6 | |
| 3 Sept. | Sunny | 25° /13° | 3.9 mm | 6 | |
| 4 Sept. | Patchy rain possible | 24° /11° | 2.5 mm | 5 | |
| 5 Sept. | Sunny | 25° /11° | 0.9 mm | 6 | |
| 6 Sept. | Sunny | 25° /12° | 0.4 mm | 6 | |
| 7 Sept. | Sunny | 25° /12° | 0.1 mm | 7 | |
| 8 Sept. | Sunny | 24° /14° | 9.5 mm | 6 | |
| 9 Sept. | Patchy rain possible | 21° /12° | 5.1 mm | 5 | |
| 10 Sept. | Moderate rain at times | 21° /11° | 2 mm | 5 | |
| 11 Sept. | Patchy rain possible | 22° /11° | 3.1 mm | 6 | |
| 12 Sept. | Patchy rain possible | 21° /10° | 2.3 mm | 5 | |
| 13 Sept. | Overcast | 20° /11° | 4.1 mm | 5 | |
| 14 Sept. | Overcast | 18° /10° | 2.3 mm | 4 | |
| 15 Sept. | Moderate or heavy rain shower | 20° /10° | 5.6 mm | 5 | |
| 16 Sept. | Moderate or heavy rain shower | 19° /8° | 6.5 mm | 4 | |
| 17 Sept. | Patchy rain possible | 17° /9° | 5 mm | 4 | |
| 18 Sept. | Cloudy | 18° /7° | 5.2 mm | 4 | |
| 19 Sept. | Patchy rain possible | 16° /8° | 5.7 mm | 4 | |
| 20 Sept. | Patchy rain possible | 18° /7° | 0.6 mm | 4 | |
| 21 Sept. | Partly cloudy | 19° /8° | 1 mm | 5 | |
| 22 Sept. | Partly cloudy | 17° /6° | 7.4 mm | 5 | |
| 23 Sept. | Sunny | 19° /7° | 3.2 mm | 5 | |
| 24 Sept. | Sunny | 18° /8° | 2.4 mm | 5 | |
| 25 Sept. | Patchy rain possible | 19° /7° | 0.6 mm | 5 | |
| 26 Sept. | Patchy rain possible | 18° /8° | 4.8 mm | 5 | |
| 27 Sept. | Partly cloudy | 17° /8° | 5.5 mm | 5 | |
| 28 Sept. | Patchy rain possible | 16° /8° | 11.9 mm | 4 | |
| 29 Sept. | Moderate rain at times | 17° /7° | 5.1 mm | 4 | |
| 30 Sept. | Cloudy | 16° /7° | 1.4 mm | 4 | |
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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.
Lucerne in September - FAQ
What are the expected maximum and minimum temperatures in Lucerne during September?
Enjoy moderate daytime temperatures of up to 20° 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 111.3 mm is expected in Lucerne during September, occurring over more than 25 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 💧
UV exposure in Lucerne during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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