Last updated: March 2, 2024
The weather in Riviera Beach, United States, during September is characterized by an average temperature of 28°C (83°F). Highs can soar to 32°C (89°F), while lows may dip to 25°C (77°F). Typically, the humidity level in Riviera Beach throughout September hovers around 83%.
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Average temperature
Maximum temperature
Humidity
In September, Riviera Beach averages 189 mm (7.4 inches) of rainfall, typically over the course of 24 rainy days. The month enjoys an average of 12 hours 16 minutes of daylight, with the sun shining for approximately 10 hours 34 minutes each day. Additionally, there is a 33% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Riviera Beach reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 | 5 | 8 | 10 | 11 | 11 | 9 | 6 | 3 | 1 | 1 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||