Last updated: August 27, 2025
In September, the average temperature in San Antonio Atotonilco, Mexico is a comfortable 15°C (60°F). However, visitors should be prepared for a range of temperatures, with a minimum of 6°C (43°F) and a maximum of 26°C (79°F). Expect significant precipitation, totaling 223 mm (8.8 in) over about 23 days, and note that humidity tends to be quite high at an average of 82%.
In September in San Antonio Atotonilco, the average temperature is 15°C (60°F). The maximum can reach 26°C (79°F), and the minimum can be as low as 6°C (43°F). This moderate climate makes San Antonio Atotonilco an ideal destination for travelers seeking a comfortable escape.
In San Antonio Atotonilco in September, the total precipitation amount reaches 223 mm (8.8 in) over the course of 23 days.
In San Antonio Atotonilco in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.
In San Antonio Atotonilco in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Antonio Atotonilco, you can check here.
UV Risk Categories
Weather in San Antonio Atotonilco varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Antonio Atotonilco, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 12°C (53°F) | 21 mm (0.8 inches) | 84% | very high |
| February Weather | 14°C (57°F) | 10 mm (0.4 inches) | 78% | extreme |
| March Weather | 16°C (60°F) | 33 mm (1.3 inches) | 75% | extreme |
| April Weather | 16°C (61°F) | 60 mm (2.4 inches) | 70% | extreme |
| May Weather | 17°C (62°F) | 115 mm (4.5 inches) | 77% | extreme |
| June Weather | 16°C (61°F) | 203 mm (8.0 inches) | 76% | extreme |
| July Weather | 15°C (60°F) | 171 mm (6.7 inches) | 68% | extreme |
| August Weather | 16°C (61°F) | 176 mm (6.9 inches) | 70% | extreme |
| September Weather | 15°C (60°F) | 223 mm (8.8 inches) | 82% | extreme |
| October Weather | 15°C (59°F) | 94 mm (3.7 inches) | 91% | extreme |
| November Weather | 13°C (57°F) | 39 mm (1.5 inches) | 89% | very high |
| December Weather | 12°C (55°F) | 8 mm (0.3 inches) | 88% | very high |