Last updated: March 2, 2024
The weather in San Andres Puerto Rico, Mexico, during September is characterized by an average temperature of 18°C (64°F). Highs can soar to 25°C (77°F), while lows may dip to 12°C (54°F). Typically, the humidity level in San Andres Puerto Rico throughout September hovers around 87%.
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Average temperature
Maximum temperature
Humidity
In September, San Andres Puerto Rico averages 387 mm (15.2 inches) of rainfall, typically over the course of 26 rainy days. The month enjoys an average of 12 hours 11 minutes of daylight, with the sun shining for approximately 9 hours 50 minutes each day. Additionally, there is a 15% probability of sunny days during this period.
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In September, the UV Index in San Andres Puerto Rico reaches a maximum of 14, 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 | 3 | 6 | 10 | 13 | 14 | 13 | 10 | 7 | 3 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||