Last updated: March 2, 2024
The weather in San Bartolo el Viejo, Mexico, during September is characterized by an average temperature of 14°C (57°F). Highs can soar to 22°C (73°F), while lows may dip to 6°C (44°F). Typically, the humidity level in San Bartolo el Viejo throughout September hovers around 82%.
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In September, San Bartolo el Viejo averages 217 mm (8.5 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 12 minutes of daylight, with the sun shining for approximately 9 hours 11 minutes each day. Additionally, there is a 10% probability of sunny days during this period.
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In September, the UV Index in San Bartolo el Viejo reaches a maximum of 15, 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 | 15 | 15 | 12 | 9 | 5 | 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 | ||||||