Weather in Lausanne for September 2027
In general, the average temperature in Lausanne at the beginning of September is 23.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.
The climate of Lausanne in September is notably wet, with an average of 11 rainy days, and a total of 130.5 mm of precipitation.
Is September a good time to visit Lausanne? check out the best time to travel to Lausanne page.
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Lausanne Weather September
Temperatures trend during September in Lausanne
September weather in Lausanne day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 23° /14° | 6.1 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 23° /14° | 2.3 mm | 5 | |
| 3 Sept. | Light rain | 24° /15° | 3.4 mm | 6 | |
| 4 Sept. | Light rain | 24° /15° | 7.3 mm | 6 | |
| 5 Sept. | Light rain | 23° /15° | 2.8 mm | 6 | |
| 6 Sept. |  Sunny | 24° /14° | 0.1 mm | 6 | |
| 7 Sept. | Light rain | 25° /16° | 3.1 mm | 6 | |
| 8 Sept. | Light rain | 24° /16° | 6.6 mm | 6 | |
| 9 Sept. | Light rain | 20° /14° | 9.4 mm | 4 | |
| 10 Sept. | Light rain | 19° /13° | 2.6 mm | 5 | |
| 11 Sept. | Light rain | 20° /13° | 3.7 mm | 5 | |
| 12 Sept. | Patchy rain possible | 21° /12° | 1.3 mm | 5 | |
| 13 Sept. | Light rain | 19° /12° | 3.1 mm | 5 | |
| 14 Sept. | Light rain | 20° /13° | 5.1 mm | 5 | |
| 15 Sept. | Light rain | 21° /14° | 4.3 mm | 5 | |
| 16 Sept. | Light rain | 19° /12° | 4.5 mm | 4 | |
| 17 Sept. | Patchy rain possible | 17° /11° | 0.8 mm | 4 | |
| 18 Sept. | Light rain | 19° /11° | 4.8 mm | 5 | |
| 19 Sept. | Light rain | 18° /11° | 4 mm | 4 | |
| 20 Sept. | Patchy rain possible | 19° /12° | 1.6 mm | 4 | |
| 21 Sept. | Light rain | 19° /11° | 5.3 mm | 4 | |
| 22 Sept. | Light rain | 18° /10° | 6 mm | 4 | |
| 23 Sept. | Light rain | 17° /10° | 7.4 mm | 4 | |
| 24 Sept. | Light rain | 18° /10° | 3.4 mm | 4 | |
| 25 Sept. | Patchy rain possible | 18° /10° | 2.2 mm | 4 | |
| 26 Sept. |  Moderate rain | 17° /11° | 13.3 mm | 4 | |
| 27 Sept. | Light rain | 17° /11° | 4 mm | 4 | |
| 28 Sept. | Light rain | 17° /10° | 8.2 mm | 4 | |
| 29 Sept. | Light rain | 17° /10° | 3.2 mm | 4 | |
| 30 Sept. | Patchy rain possible | 17° /10° | 0.5 mm | 4 | |
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Guide for Lausanne in September
In Lausanne, Switzerland, September marks the transition from summer to autumn, bringing about a noticeable change in the weather. At the beginning of the month, Lausanne experiences lingering warmth from the summer season, with average temperatures around 20°.
The days are generally pleasant, with mild temperatures and occasional sunshine, making it an ideal time for outdoor activities and sightseeing. However, as the month progresses, the weather gradually cools down, and by the end of September, the average temperatures drop to around 16°.
The evenings become cooler, and there is a higher chance of experiencing light rain showers as the autumnal weather sets in.
Overall, September in Lausanne offers a mix of late summer warmth and early autumn coolness, creating a pleasant and comfortable atmosphere for visitors. It's a great time to explore the city's charming streets, enjoy the beautiful views of Lake Geneva, and indulge in the local cuisine.
Travelers should pack a variety of clothing to accommodate the changing weather, including light layers for the warmer days and a jacket or sweater for the cooler evenings.
Lausanne in September - FAQ
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September rainfall patterns in Lausanne
UV exposure in Lausanne during September
Where is Lausanne?Get accurate weather forecasts for Lausanne, located at latitude 46.516 and longitude 6.633. Stay updated with localized weather information tailored for Lausanne.