Last updated: March 2, 2024
The weather in Knokke-Heist, Belgium, during September is characterized by an average temperature of 16°C (61°F). Highs can soar to 26°C (79°F), while lows may dip to 8°C (47°F). Typically, the humidity level in Knokke-Heist throughout September hovers around 82%.
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Humidity
In September, Knokke-Heist averages 56 mm (2.2 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 34 minutes of daylight, with the sun shining for approximately 10 hours 39 minutes each day. Additionally, there is a 36% probability of sunny days during this period.
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In September, the UV Index in Knokke-Heist 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 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||