St. Moritz
September
Weather in St. Moritz for September 2025
Your guide to St. Moritz weather in September - trends and predictions
With an average of 5 snowy days, St. Moritz usually enjoys a light touch of snow in September.
In general, the average temperature in St. Moritz at the beginning of September is 16.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.4 °C by the end of September.
Snow Forecast ❄️
Temperatures
8
Dry days
17
Rainy days
5
Snow days
12°/0°
Temperatures
13 km/h
Avg max wind
81 %
Avg humidity
St. Moritz in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  16° | 3  16° | 4  17° | 5 17° | 6 18° | 7 18° |
| 8 18° | 9 14° | 10 16° | 11  15° | 12 12° | 13  7° | 14  6° |
| 15 8° | 16 9° | 17 11° | 18  12° | 19 11° | 20 11° | 21 10° |
| 22 10° | 23  6° | 24 7° | 25 11° | 26 11° | 27 12° | 28 10° |
| 29 10° | 30 12° |
You can click on date
Access St. Moritz weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in St. Moritz
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 15° /2° | 4.8 mm | 0 cm | |
| 2 Sept. | Patchy rain possible | 16° /2° | 5.3 mm | 0 cm | |
| 3 Sept. | Sunny | 16° /2° | 1.9 mm | 0 cm | |
| 4 Sept. | Overcast | 17° /5° | 4.9 mm | 0 cm | |
| 5 Sept. | Sunny | 17° /4° | 3.1 mm | 0 cm | |
| 6 Sept. | Sunny | 18° /3° | 0 mm | 0 cm | |
| 7 Sept. | Sunny | 18° /2° | 0.1 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 18° /3° | 2.7 mm | 0 cm | |
| 9 Sept. | Patchy rain possible | 14° /2° | 12.1 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 16° /2° | 2.4 mm | 0 cm | |
| 11 Sept. | Patchy light rain with thunder | 15° /2° | 5.5 mm | 0 cm | |
| 12 Sept. | Partly cloudy | 12° /-1° | 7 mm | 4.5 cm | |
| 13 Sept. | Thundery outbreaks possible | 7° /-2° | 10.2 mm | 2.6 cm | |
| 14 Sept. | Moderate or heavy rain shower | 6° /-3° | 4 mm | 1.8 cm | |
| 15 Sept. | Thundery outbreaks possible | 8° /-3° | 0 mm | 0 cm | |
| 16 Sept. | Patchy rain possible | 9° /-4° | 0.2 mm | 0 cm | |
| 17 Sept. | Partly cloudy | 11° /-1° | 0.8 mm | 0.2 cm | |
| 18 Sept. | Moderate rain | 12° /-1° | 11.1 mm | 0 cm | |
| 19 Sept. | Patchy light rain with thunder | 11° /-1° | 5.9 mm | 0 cm | |
| 20 Sept. | Light rain shower | 11° /-1° | 0.7 mm | 0 cm | |
| 21 Sept. | Light rain shower | 10° /0° | 1.5 mm | 0 cm | |
| 22 Sept. | Light rain shower | 10° /-1° | 11.7 mm | 0 cm | |
| 23 Sept. | Light sleet showers | 6° /-2° | 14.1 mm | 0 cm | |
| 24 Sept. | Partly cloudy | 7° /-4° | 6.5 mm | 0 cm | |
| 25 Sept. | Sunny | 11° /-2° | 0.4 mm | 0 cm | |
| 26 Sept. | Sunny | 11° /0° | 3 mm | 0 cm | |
| 27 Sept. | Sunny | 12° /0° | 7.4 mm | 0 cm | |
| 28 Sept. | Sunny | 10° /-3° | 10 mm | 7.5 cm | |
| 29 Sept. | Partly cloudy | 10° /-4° | 0.1 mm | 0.1 cm | |
| 30 Sept. | Patchy rain possible | 12° /-1° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for St. Moritz 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 St. Moritz forecast closer to your planned date for the most up-to-date weather information.
St. Moritz in September - FAQ
What are the expected maximum and minimum temperatures in St. Moritz during September?
Prepare for cooler days with highs just around 12° and colder nights, dipping below 0°.
How much rainfall should be expected in St. Moritz during September?
Significant rainfall exceeding 137.4 mm is expected in St. Moritz during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
Will it snow in St. Moritz in September 2025?
St. Moritz experiences an average snowfall of 16.67 cm during September, occurring over 5 days.
What are the typical wind conditions in St. Moritz during September?
The average wind speed in St. Moritz during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
St. Moritz snow forecast September 2025
Track daily snowfall levels and discover St. Moritz’s snowy potential this September ❄️
September rainfall patterns in St. Moritz
Explore the daily rainfall trends and prepare for St. Moritzs September weather 💧
Quick links
You are here
Where is St. Moritz?Get accurate weather forecasts for St. Moritz, located at latitude 46.499 and longitude 9.843. Stay updated with localized weather information tailored for St. Moritz.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.