Last updated: March 2, 2024
The weather in San Sebastian de las Grutas, Mexico, during September is characterized by an average temperature of 17°C (63°F). Highs can soar to 27°C (81°F), while lows may dip to 11°C (53°F). Typically, the humidity level in San Sebastian de las Grutas throughout September hovers around 84%.
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Humidity
In September, San Sebastian de las Grutas averages 383 mm (15.1 inches) of rainfall, typically over the course of 27 rainy days. The month enjoys an average of 12 hours 11 minutes of daylight, with the sun shining for approximately 8 hours 28 minutes each day. Additionally, there is a 8% probability of sunny days during this period.
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In September, the UV Index in San Sebastian de las Grutas 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 | 0 | 1 | 2 | 5 | 9 | 12 | 14 | 14 | 12 | 8 | 4 | 2 | 1 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||