Last updated: March 2, 2024
The weather in San Juan la Isla, Mexico, during September is characterized by an average temperature of 14°C (57°F). Highs can soar to 22°C (72°F), while lows may dip to 6°C (44°F). Typically, the humidity level in San Juan la Isla throughout September hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In September, San Juan la Isla averages 260 mm (10.2 inches) of rainfall, typically over the course of 26 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.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in San Juan la Isla 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 | ||||||