Last updated: March 2, 2024
The weather in San Juan Llano Grande, Mexico, during September is characterized by an average temperature of 22°C (72°F). Highs can soar to 31°C (88°F), while lows may dip to 14°C (58°F). Typically, the humidity level in San Juan Llano Grande throughout September hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In September, San Juan Llano Grande averages 227 mm (8.9 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 12 hours 12 minutes of daylight, with the sun shining for approximately 9 hours 21 minutes each day. Additionally, there is a 18% probability of sunny days during this period.
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Rainy days
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Chance of sun
In September, the UV Index in San Juan Llano Grande 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 | 11 | 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 | ||||||