Last updated: March 2, 2024
The weather in Saint-Martin-Boulogne, France, during September is characterized by an average temperature of 16°C (61°F). Highs can soar to 24°C (75°F), while lows may dip to 10°C (50°F). Typically, the humidity level in Saint-Martin-Boulogne throughout September hovers around 80%.
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Humidity
In September, Saint-Martin-Boulogne averages 67 mm (2.7 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 34 minutes of daylight, with the sun shining for approximately 10 hours 58 minutes each day. Additionally, there is a 41% probability of sunny days during this period.
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In September, the UV Index in Saint-Martin-Boulogne reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 30 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 3 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||