Last updated: March 2, 2024
The weather in San Andres, Mexico, during September is characterized by an average temperature of 20°C (68°F). Highs can soar to 29°C (85°F), while lows may dip to 10°C (50°F). Typically, the humidity level in San Andres throughout September hovers around 79%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, San Andres averages 78 mm (3.1 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 12 hours 17 minutes of daylight, with the sun shining for approximately 9 hours 49 minutes each day. Additionally, there is a 61% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in San Andres reaches a maximum of 12, 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 | 9 | 11 | 12 | 11 | 9 | 6 | 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 | ||||