Last updated: March 2, 2024
The weather in Bethany Beach, United States, during September is characterized by an average temperature of 23°C (73°F). Highs can soar to 29°C (84°F), while lows may dip to 16°C (61°F). Typically, the humidity level in Bethany Beach throughout September hovers around 75%.
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Average temperature
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Humidity
In September, Bethany Beach averages 97 mm (3.8 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 23 minutes of daylight, with the sun shining for approximately 9 hours 48 minutes each day. Additionally, there is a 57% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Bethany Beach reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 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 | 1 | 1 | 2 | 4 | 6 | 8 | 8 | 7 | 6 | 4 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||