Last updated: August 27, 2025
In September, the average temperature in Lully, Switzerland hovers around 16°C (60°F), creating a pleasant atmosphere. Expect temperatures to vary, with a minimum of 6°C (42°F) and a maximum reaching up to 29°C (84°F). Rainfall is quite common, with an average precipitation of 68 mm (2.7 in) spread over 10 days. The air feels humid, with an average humidity level of 81%, adding to the overall climate experience.
In September, in Lully, the average temperature is a pleasant 16°C (60°F). The maximum can reach a warm 29°C (84°F), while the minimum can dip as low as 6°C (42°F). This makes Lully an ideal destination for travelers seeking a mild climate and the opportunity to enjoy a variety of outdoor activities.
In Lully in September, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.
In Lully in September, humidity is 81%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you as you travel, making you acutely aware of the sweat on your skin and creating an atmosphere that might dampen your spirits but also invites you to seek out refreshing beverages and shady spots.
In Lully in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lully, you can refer to this Hourly UV Index in Lully.
UV Risk Categories
Weather in Lully varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lully, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 99 mm (3.9 inches) | 91% | low |
| February Weather | 4°C (39°F) | 81 mm (3.2 inches) | 89% | moderate |
| March Weather | 6°C (43°F) | 107 mm (4.2 inches) | 87% | high |
| April Weather | 10°C (49°F) | 54 mm (2.1 inches) | 84% | high |
| May Weather | 13°C (55°F) | 133 mm (5.2 inches) | 80% | very high |
| June Weather | 18°C (64°F) | 101 mm (4.0 inches) | 82% | very high |
| July Weather | 20°C (67°F) | 103 mm (4.1 inches) | 82% | very high |
| August Weather | 19°C (67°F) | 99 mm (3.9 inches) | 77% | very high |
| September Weather | 16°C (60°F) | 68 mm (2.7 inches) | 81% | high |
| October Weather | 11°C (52°F) | 97 mm (3.8 inches) | 89% | moderate |
| November Weather | 6°C (43°F) | 90 mm (3.6 inches) | 89% | moderate |
| December Weather | 3°C (38°F) | 160 mm (6.3 inches) | 91% | low |