St. Moritz
September
Weather in St. Moritz for September 2027
Your guide to St. Moritz weather in September - trends and predictions
With an average of 2 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 15.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.5 °C by the end of September.
The climate of St. Moritz in September is notably wet, with an average of 12 rainy days, and a total of 116.1 mm of precipitation.
Is September a good time to visit St. Moritz? check out the best time to travel to St. Moritz page.
Snow Forecast ❄️
Temperatures
Rain 🌧️
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16
Dry days
12
Rainy days
2
Snow days
12°/1°
Temperatures
12 km/h
Avg max wind
78 %
Avg humidity
St. Moritz Weather September
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Temperatures trend during September in St. Moritz
See the weather trend as well as the moving average line
September weather in St. Moritz day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 14° /3° | 6.6 mm | 0 cm | |
| 2 Sept. |  Patchy light rain with thunder | 14° /2° | 4.2 mm | 0 cm | |
| 3 Sept. |  Sunny | 15° /2° | 0.9 mm | 0 cm | |
| 4 Sept. |  Patchy rain possible | 17° /4° | 2.4 mm | 0 cm | |
| 5 Sept. | Light rain | 13° /3° | 5.2 mm | 0 cm | |
| 6 Sept. | Sunny | 17° /3° | 0 mm | 0 cm | |
| 7 Sept. | Patchy rain possible | 18° /3° | 1.1 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 17° /4° | 2 mm | 0 cm | |
| 9 Sept. |  Moderate rain | 14° /3° | 11.4 mm | 0 cm | |
| 10 Sept. | Light rain | 13° /2° | 6.8 mm | 0 cm | |
| 11 Sept. | Patchy light rain with thunder | 13° /2° | 3.2 mm | 0 cm | |
| 12 Sept. |  Light snow | 12° /0° | 4 mm | 2.3 cm | |
| 13 Sept. |  Thundery outbreaks possible | 10° /0° | 6 mm | 1.3 cm | |
| 14 Sept. | Patchy rain possible | 10° /1° | 2.3 mm | 0.9 cm | |
| 15 Sept. | Thundery outbreaks possible | 12° /0° | 0 mm | 0 cm | |
| 16 Sept. | Patchy rain possible | 10° /-1° | 2.1 mm | 0 cm | |
| 17 Sept. | Patchy rain possible | 11° /0° | 2 mm | 0.1 cm | |
| 18 Sept. | Moderate rain | 13° /1° | 6.6 mm | 0 cm | |
| 19 Sept. | Patchy light rain with thunder | 14° /1° | 3 mm | 0 cm | |
| 20 Sept. | Light rain shower | 14° /2° | 0.3 mm | 0 cm | |
| 21 Sept. | Patchy rain possible | 12° /2° | 0.8 mm | 0 cm | |
| 22 Sept. | Moderate rain | 10° /2° | 12.5 mm | 0 cm | |
| 23 Sept. |  Light sleet showers | 9° /1° | 8.1 mm | 0 cm | |
| 24 Sept. | Patchy light rain with thunder | 8° /-2° | 8.7 mm | 0 cm | |
| 25 Sept. | Patchy rain possible | 10° /-1° | 1.9 mm | 0.1 cm | |
| 26 Sept. | Light rain | 10° /1° | 3.9 mm | 0.9 cm | |
| 27 Sept. | Patchy light rain with thunder | 11° /1° | 5 mm | 0.2 cm | |
| 28 Sept. | Light snow | 11° /-2° | 5.1 mm | 3.7 cm | |
| 29 Sept. |  Mist | 12° /-2° | 0.1 mm | 0 cm | |
| 30 Sept. |  Overcast | 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.
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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 1°.
How much rainfall should be expected in St. Moritz during September?
Significant rainfall exceeding 116.1 mm is expected in St. Moritz during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
Will it snow in St. Moritz in September 2027?
St. Moritz experiences an average snowfall of 9.5 cm during September, occurring over 2 days.
What are the typical wind conditions in St. Moritz during September?
The average wind speed in St. Moritz during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
St. Moritz snow forecast September 2027
Track daily snowfall levels and discover St. Moritz’s snowy potential this September ❄️
On average, St. Moritz sees 2 snowy days during September, with approximately 9.5 cm of total snowfall.
September rainfall patterns in St. Moritz
Explore the daily rainfall trends and prepare for St. Moritzs September weather 💧
Typically, St. Moritz has 12 rainy days in September with a total of 116.1 mm of rainfall.
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