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Switzerland weather

Weather in Neuchâtel for September 2025

Your guide to Neuchâtel weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Neuchâtel is cooler than usual, with temperatures averaging 19.2 °C, this is -2.9 °C below the typical seasonal average.

  • The forecast for the next days in Neuchâtel predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in Neuchâtel at the beginning of September is 23.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.1 °C by the end of September.

    • Rain 🌧️

  • Neuchâtel in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 138.5 mm.

Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/10°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Neuchâtel Weather September

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

Temperatures trend during September in Neuchâtel

See the weather trend as well as the moving average line

September weather in Neuchâtel day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 23° /11° 7.1 mm 6
2 Sept. Sunny
Sunny
 23° /11° 3.9 mm 5
3 Sept. Partly cloudy
Partly cloudy
 25° /11° 3.3 mm 6
4 Sept. Mist
Mist
 23° /12° 11 mm 5
5 Sept. Light rain shower
Light rain shower
 22° /10° 5.3 mm 5
6 Sept. Sunny
Sunny
 23° /9° 0 mm 6
7 Sept. Sunny
Sunny
 26° /10° 0 mm 6
8 Sept. Sunny
Sunny
 24° /13° 3 mm 6
9 Sept. Light rain shower
Light rain shower
 20° /12° 11.2 mm 5
10 Sept. Sunny
Sunny
 22° /10° 2.1 mm 6
11 Sept. Partly cloudy
Partly cloudy
 21° /10° 6.7 mm 5
12 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 20° /8° 1.3 mm 4
13 Sept. Light rain shower
Light rain shower
 16° /8° 8.2 mm 4
14 Sept. Moderate rain
Moderate rain
 16° /7° 5.4 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 24° /13° 0.7 mm 1.3
16 Sept. Partly cloudy
Partly cloudy
 17° /10° 0 mm 1
17 Sept. Partly cloudy
Partly cloudy
 20° /8° 0 mm 1
18 Sept. Sunny
Sunny
 25° /10° 0 mm 1.4
19 Sept. Sunny
Sunny
 25° /10° 0 mm 4
20 Sept. Sunny
Sunny
 25° /12° 0 mm 5
21 Sept. Partly cloudy
Partly cloudy
 23° /14° 0 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 1.7 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 3.5 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 21° /10° 0.2 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 3.5 mm 4
26 Sept. Moderate rain
Moderate rain
 17° /11° 9.4 mm 3
27 Sept. Cloudy
Cloudy
 19° /8° 0 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 1.8 mm 3
29 Sept. Sunny
Sunny
 19° /7° 0 mm 5
30 Sept. Sunny
Sunny
 20° /9° 0.9 mm 5
Next
Important Notice
Our weather forecast for Neuchâtel 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 Neuchâtel forecast closer to your planned date for the most up-to-date weather information.
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Neuchâtel in September - FAQ

What are the expected maximum and minimum temperatures in Neuchâtel during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Neuchâtel during September?
Significant rainfall exceeding 138.5 mm is expected in Neuchâtel during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Neuchâtel during September?
The average wind speed in Neuchâtel during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Neuchâtel

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

UV exposure in Neuchâtel during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Neuchâtel
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Neuchâtel District

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Location coordinates Where is Neuchâtel?

Get accurate weather forecasts for Neuchâtel, located at latitude 46.992 and longitude 6.931. Stay updated with localized weather information tailored for Neuchâtel.

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