Last updated: March 2, 2024
The weather in San Ildefonso, Mexico, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 28°C (82°F), while lows may dip to 11°C (52°F). Typically, the humidity level in San Ildefonso throughout September hovers around 81%.
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Average temperature
Maximum temperature
Humidity
In September, San Ildefonso averages 164 mm (6.4 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 12 hours 13 minutes of daylight, with the sun shining for approximately 9 hours 24 minutes each day. Additionally, there is a 15% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in San Ildefonso 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 | 4 | 8 | 11 | 14 | 14 | 12 | 8 | 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 | ||||||