Last updated: August 23, 2025
In September, the average temperature in Saint-Julien, France hovers around 18°C (64°F), offering a comfortable climate. Expect temperatures to range from a cool 6°C (43°F) to a warm 33°C (93°F). During this month, precipitation totals about 75 mm (2.9 in), typically spread across 9 days. With an average humidity of 72%, it's a wonderfully balanced time to enjoy the outdoors.
In September in Saint-Julien, the average temperature is 18°C (64°F). The maximum can reach 33°C (93°F), and the minimum can be as low as 6°C (43°F). This makes it a comfortable time for travelers, offering warm days and cooler evenings for enjoyable outings.
In Saint-Julien, in September, the precipitation amount is 75 mm (2.9 in) spread over the course of 9 days.
In Saint-Julien in September, humidity is 72%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as the air clings to your skin, leaving you longing for a refreshing breeze.
In Saint-Julien 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 Saint-Julien, you can refer to this Hourly UV Index in Saint-Julien.
UV Risk Categories
Weather in Saint-Julien varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint-Julien, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 75 mm (2.9 inches) | 91% | low |
| February Weather | 6°C (43°F) | 59 mm (2.3 inches) | 88% | moderate |
| March Weather | 8°C (47°F) | 82 mm (3.2 inches) | 84% | moderate |
| April Weather | 12°C (54°F) | 54 mm (2.1 inches) | 81% | high |
| May Weather | 15°C (60°F) | 118 mm (4.6 inches) | 77% | very high |
| June Weather | 20°C (69°F) | 86 mm (3.4 inches) | 76% | very high |
| July Weather | 22°C (72°F) | 79 mm (3.1 inches) | 68% | very high |
| August Weather | 22°C (71°F) | 81 mm (3.2 inches) | 61% | very high |
| September Weather | 18°C (64°F) | 75 mm (2.9 inches) | 72% | high |
| October Weather | 13°C (55°F) | 101 mm (4.0 inches) | 88% | moderate |
| November Weather | 7°C (45°F) | 97 mm (3.8 inches) | 91% | moderate |
| December Weather | 5°C (41°F) | 134 mm (5.3 inches) | 92% | low |