Last updated: March 2, 2024
The weather in Lerma, Mexico, during September is characterized by an average temperature of 28°C (83°F). Highs can soar to 35°C (95°F), while lows may dip to 24°C (75°F). Typically, the humidity level in Lerma throughout September hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Lerma averages 135 mm (5.3 inches) of rainfall, typically over the course of 21 rainy days. The month enjoys an average of 12 hours 13 minutes of daylight, with the sun shining for approximately 10 hours 13 minutes each day. Additionally, there is a 32% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Lerma reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 1 | 1 | 3 | 6 | 9 | 12 | 12 | 11 | 9 | 5 | 3 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||