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Switzerland weather

Weather in Luzern for September 2025

Your guide to Luzern weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Luzern is cooler than usual, with temperatures averaging 18.8 °C, this is -3.5 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Luzern with the forecast suggesting a temperature of 20.6 °C, lower than the historical average.

  • In general, the average temperature in Luzern at the beginning of September is 23.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.

    • Rain 🌧️

  • Luzern experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 111.3 mm.

Average dry days
5
Dry days
Average rainy days
25
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/10°
Temperatures
Average wind speed
8 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Luzern Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
22°
2
Light rain shower
23°
3
Sunny
25°
4
Patchy rain possible
24°
5
Sunny
23°
6
Sunny
24°
7
Sunny
25°
8
Sunny
24°
9
Light rain shower
20°
10
Moderate rain at times
20°
11
Patchy rain possible
21°
12
Patchy rain possible
20°
13
Light rain shower
20°
14
Overcast
18°
15
Moderate rain
25°
16
Patchy rain possible
15°
17
Partly cloudy
20°
18
Sunny
25°
19
Sunny
25°
20
Sunny
26°
21
Patchy rain possible
24°
22
Patchy rain possible
18°
23
Patchy rain possible
19°
24
Patchy rain possible
18°
25
Patchy rain possible
19°
26
Patchy rain possible
17°
27
Partly cloudy
20°
28
Patchy rain possible
18°
29
Moderate rain at times
17°
30
Cloudy
16°

Temperatures trend during September in Luzern

See the weather trend as well as the moving average line

September weather in Luzern day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 22° /11° 3.6 mm 5
2 Sept. Light rain shower
Light rain shower
 23° /11° 4 mm 5
3 Sept. Sunny
Sunny
 25° /12° 3.2 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 5.2 mm 5
5 Sept. Sunny
Sunny
 23° /10° 2.7 mm 6
6 Sept. Sunny
Sunny
 24° /10° 0.3 mm 6
7 Sept. Sunny
Sunny
 25° /12° 0.1 mm 6
8 Sept. Sunny
Sunny
 24° /13° 7.9 mm 5
9 Sept. Light rain shower
Light rain shower
 20° /12° 6 mm 5
10 Sept. Moderate rain at times
Moderate rain at times
 20° /11° 2.4 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 2.7 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 20° /10° 2 mm 5
13 Sept. Light rain shower
Light rain shower
 20° /10° 4.2 mm 5
14 Sept. Overcast
Overcast
 18° /10° 2.3 mm 4
15 Sept. Moderate rain
Moderate rain
 25° /13° 10.9 mm 1.4
16 Sept. Patchy rain possible
Patchy rain possible
 15° /11° 2.9 mm 0.4
17 Sept. Partly cloudy
Partly cloudy
 20° /10° 0 mm 0.2
18 Sept. Sunny
Sunny
 25° /13° 0 mm 1.4
19 Sept. Sunny
Sunny
 25° /13° 0 mm 5
20 Sept. Sunny
Sunny
 26° /11° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 24° /16° 0.4 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 0.9 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 3.7 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 0.3 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 19° /13° 1.2 mm 4
26 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 2.9 mm 3
27 Sept. Partly cloudy
Partly cloudy
 20° /7° 0 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 2.4 mm 3
29 Sept. Moderate rain at times
Moderate rain at times
 17° /7° 5.1 mm 4
30 Sept. Cloudy
Cloudy
 16° /7° 1.4 mm 4
Next
Important Notice
Our weather forecast for Luzern 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 Luzern forecast closer to your planned date for the most up-to-date weather information.
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Luzern in September - FAQ

What are the expected maximum and minimum temperatures in Luzern 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 Luzern during September?
Significant rainfall exceeding 111.3 mm is expected in Luzern during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Luzern during September?
The average wind speed in Luzern during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Luzern

Explore the daily rainfall trends and prepare for Luzerns September weather 💧

UV exposure in Luzern during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Luzern, located at latitude 47.05 and longitude 8.306. Stay updated with localized weather information tailored for Luzern.

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