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Switzerland weather

Weather in Wengen for September 2025

Your guide to Wengen weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Wengen has been nearly identical to the historical average, with a temperature of 13.2 °C (showing only a slight deviation of 0 °C).

  • Expect cooler weather in the next days in Wengen with the forecast suggesting a temperature of 10.1 °C, lower than the historical average.

  • In general, the average temperature in Wengen at the beginning of September is 15.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6.1 °C by the end of September.

    • Rain 🌧️

  • Wengen in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 180.1 mm.

Average dry days
10
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
11°/4°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Wengen Weather September

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

Temperatures trend during September in Wengen

See the weather trend as well as the moving average line

September weather in Wengen day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 15° /8° 15.8 mm 4
2 Sept. Light rain shower
Light rain shower
 14° /7° 12.7 mm 4
3 Sept. Light rain shower
Light rain shower
 17° /6° 5.4 mm 4
4 Sept. Light rain shower
Light rain shower
 15° /7° 19.1 mm 4
5 Sept. Patchy light rain
Patchy light rain
 13° /6° 7.4 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
 17° /5° 0.5 mm 5
7 Sept. Sunny
Sunny
 20° /8° 0 mm 6
8 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 16° /8° 7.6 mm 4
9 Sept. Light rain shower
Light rain shower
 10° /6° 13.7 mm 3
10 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 2.3 mm 3
11 Sept. Light drizzle
Light drizzle
 12° /4° 4.2 mm 3
12 Sept. Light rain shower
Light rain shower
 7° /1° 6.2 mm 2
13 Sept. Light rain shower
Light rain shower
 8° /2° 9.6 mm 2
14 Sept. Light rain shower
Light rain shower
 9° /2° 4.2 mm 3
15 Sept. Sunny
Sunny
 7° /-1° 0 mm 3
16 Sept. Patchy rain possible
Patchy rain possible
 10° /5° 1.8 mm 0.7
17 Sept. Partly cloudy
Partly cloudy
 14° /5° 0 mm 0.5
18 Sept. Sunny
Sunny
 20° /9° 0 mm 1.5
19 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 0.5 mm 1.5
20 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.6 mm 1.6
21 Sept. Moderate rain
Moderate rain
 12° /7° 9.5 mm 2
22 Sept. Moderate rain
Moderate rain
 7° /5° 6.4 mm 2
23 Sept. Moderate rain
Moderate rain
 5° /1° 7.1 mm 1
24 Sept. Light rain
Light rain
 1° /-1° 8.7 mm 1
25 Sept. Light drizzle
Light drizzle
 2° /0° 4.8 mm 1
26 Sept. Patchy rain possible
Patchy rain possible
 4° /-2° 0.3 mm 1
27 Sept. Partly cloudy
Partly cloudy
 6° /-2° 0 mm 2
28 Sept. Patchy rain possible
Patchy rain possible
 8° /-1° 0 mm 1
29 Sept. Patchy rain possible
Patchy rain possible
 10° /2° 0.2 mm 2
30 Sept. Patchy light drizzle
Patchy light drizzle
 12° /4° 3.5 mm 3
Next
Important Notice
Our weather forecast for Wengen 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 Wengen forecast closer to your planned date for the most up-to-date weather information.
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Wengen in September - FAQ

What are the expected maximum and minimum temperatures in Wengen during September?
Prepare for cooler days with highs just around 11° and colder nights, dipping below 4°.
How much rainfall should be expected in Wengen during September?
Significant rainfall exceeding 180.1 mm is expected in Wengen during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Wengen during September?
The average wind speed in Wengen during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Wengen

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

UV exposure in Wengen during September

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

Quick links

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Location coordinates Where is Wengen?

Get accurate weather forecasts for Wengen, located at latitude 46.606 and longitude 7.92. Stay updated with localized weather information tailored for Wengen.

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