Last updated: August 27, 2025
In September, the average temperature in Orsieres, Switzerland hovers around 8°C (46°F), making it a crisp time of year. Expect temperature fluctuations, with a minimum of -9°C (15°F) and a pleasant maximum of 20°C (68°F). Precipitation is quite notable, with 82 mm (3.2 in) spread over 13 days, while humidity levels linger at a comfortable 73%. Prepare accordingly to fully enjoy the distinct climate of the season!
In September in Orsieres, the average temperature is 8°C (46°F), with maximums reaching 20°C (68°F) and minimums dropping to as low as -9°C (15°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and chilly nights.
In Orsieres in September, the total precipitation amount is 82 mm (3.2 in), occurring over the course of 13 days.
In Orsieres in September humidity is 73%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that wraps around you, making outdoor activities less comfortable for traveling and often leaving you yearning for a warm shelter to escape the cool, moist air.
In Orsieres in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Orsieres.
UV Risk Categories
Weather in Orsieres varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Orsieres, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (14°F) | 137 mm (5.4 inches) | 91% | moderate |
| February Weather | -6°C (21°F) | 96 mm (3.8 inches) | 87% | moderate |
| March Weather | -4°C (25°F) | 123 mm (4.8 inches) | 84% | very high |
| April Weather | 0°C (32°F) | 74 mm (2.9 inches) | 83% | very high |
| May Weather | 4°C (40°F) | 153 mm (6.0 inches) | 78% | very high |
| June Weather | 10°C (50°F) | 114 mm (4.5 inches) | 75% | extreme |
| July Weather | 12°C (54°F) | 125 mm (4.9 inches) | 72% | very high |
| August Weather | 12°C (53°F) | 124 mm (4.9 inches) | 63% | very high |
| September Weather | 8°C (46°F) | 82 mm (3.2 inches) | 73% | high |
| October Weather | 3°C (38°F) | 123 mm (4.8 inches) | 89% | high |
| November Weather | -4°C (25°F) | 103 mm (4.0 inches) | 90% | moderate |
| December Weather | -8°C (17°F) | 203 mm (8.0 inches) | 90% | low |