Last updated: August 23, 2025
In September, the average temperature in Castelnau-le-Lez, France hovers around 21°C (69°F), providing a warm climate for outdoor activities. Temperatures can range from a minimum of 8°C (46°F) to a maximum of 34°C (93°F), offering a delightful variation in weather. Be prepared for about 60 mm (2.3 in) of precipitation over 5 days, and expect an average humidity of 70%, adding a touch of tropical charm to your visit.
In September in Castelnau-le-Lez, the average temperature is 21°C (69°F). Maximum temperatures can reach 34°C (93°F), while minimum temperatures can drop to as low as 8°C (46°F). It's a great time to explore Castelnau-le-Lez, as you'll experience warm days and cooler nights, ideal for outdoor activities and sightseeing.
In Castelnau-le-Lez in September, the precipitation amount reached 60 mm (2.3 in) over a span of 5 days.
In Castelnau-le-Lez in September, humidity is 70%. With an average temperature of 21°C (69°F), this humidity feels like a warm blanket that envelops you as you travel, making you feel sticky and a bit lethargic, yet it adds a certain tropical charm to your adventures.
In Castelnau-le-Lez 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 Castelnau-le-Lez.
UV Risk Categories
Weather in Castelnau-le-Lez varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Castelnau-le-Lez, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (44°F) | 63 mm (2.5 inches) | 82% | low |
| February Weather | 9°C (49°F) | 46 mm (1.8 inches) | 77% | moderate |
| March Weather | 11°C (52°F) | 78 mm (3.1 inches) | 73% | moderate |
| April Weather | 13°C (57°F) | 84 mm (3.3 inches) | 73% | high |
| May Weather | 18°C (64°F) | 73 mm (2.9 inches) | 71% | very high |
| June Weather | 22°C (73°F) | 44 mm (1.7 inches) | 67% | very high |
| July Weather | 25°C (78°F) | 22 mm (0.9 inches) | 66% | very high |
| August Weather | 25°C (77°F) | 43 mm (1.7 inches) | 63% | very high |
| September Weather | 21°C (69°F) | 60 mm (2.3 inches) | 70% | high |
| October Weather | 16°C (61°F) | 121 mm (4.8 inches) | 80% | moderate |
| November Weather | 11°C (52°F) | 143 mm (5.6 inches) | 84% | moderate |
| December Weather | 8°C (46°F) | 61 mm (2.4 inches) | 83% | low |