Last updated: August 27, 2025
In San Martin Zacatepec, Mexico, the average temperature in September is a pleasant 21°C (69°F). You can expect a minimum of 12°C (54°F) and a maximum of 31°C (87°F) during this time. Be prepared for some rain, as precipitation can reach a total of 274 mm (10.8 in) over approximately 23 days. With an average humidity level of 82%, it's a perfect time for leisurely outdoor activities—just don't forget to bring an umbrella!
In September in San Martin Zacatepec, the average temperature is 21°C (69°F). Maximum temperatures can reach up to 31°C (87°F), while minimum temperatures can drop as low as 12°C (54°F). This makes San Martin Zacatepec a great destination for travelers seeking pleasant weather for outdoor activities.
In San Martin Zacatepec in September, the precipitation amount is 274 mm (10.8 in) over a span of 23 days.
In San Martin Zacatepec in September humidity is 82%. With an average temperature of 21°C (69°F), this humidity feels like a sweltering embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and cooling breezes.
In San Martin Zacatepec 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 Martin Zacatepec, you can check here.
UV Risk Categories
Weather in San Martin Zacatepec varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Martin Zacatepec, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 18°C (65°F) | 5 mm (0.2 inches) | 65% | very high |
| February Weather | 20°C (68°F) | 2 mm (0.1 inches) | 61% | extreme |
| March Weather | 22°C (71°F) | 7 mm (0.3 inches) | 59% | extreme |
| April Weather | 23°C (74°F) | 14 mm (0.5 inches) | 62% | extreme |
| May Weather | 23°C (75°F) | 66 mm (2.6 inches) | 73% | extreme |
| June Weather | 22°C (72°F) | 205 mm (8.1 inches) | 78% | extreme |
| July Weather | 21°C (70°F) | 155 mm (6.1 inches) | 79% | extreme |
| August Weather | 21°C (70°F) | 206 mm (8.1 inches) | 82% | extreme |
| September Weather | 21°C (69°F) | 274 mm (10.8 inches) | 82% | extreme |
| October Weather | 20°C (69°F) | 92 mm (3.6 inches) | 79% | extreme |
| November Weather | 19°C (67°F) | 17 mm (0.7 inches) | 72% | very high |
| December Weather | 18°C (65°F) | 1 mm (0.0 inches) | 70% | very high |