Last updated: August 27, 2025
In September, the average temperature in Santa Teresa, Mexico reaches a warm 30°C (87°F). While you can expect pleasant days, be prepared for a range with minimums dipping to 18°C (64°F) and maximums soaring up to 44°C (112°F). You might also encounter 76 mm (3.0 in) of precipitation over about 11 days, contributing to an average humidity of 76%.
In September in Santa Teresa, the average temperature is 30°C (87°F). Maximum temperatures can reach 44°C (112°F), and the minimum can drop as low as 18°C (64°F). It's essential for travelers to be prepared for heat while also being ready for cooler evenings.
In Santa Teresa in September, the total precipitation amount is 76 mm (3.0 in), recorded over a period of 11 days.
In Santa Teresa in September, humidity is 76%. With an average temperature of 30°C (87°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and leaving a sheen of sweat on your skin, which can be quite taxing for traveling.
In Santa Teresa in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Santa Teresa.
UV Risk Categories
Weather in Santa Teresa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Teresa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (64°F) | 11 mm (0.4 inches) | 71% | high |
| February Weather | 18°C (65°F) | 10 mm (0.4 inches) | 66% | very high |
| March Weather | 21°C (69°F) | 11 mm (0.4 inches) | 58% | very high |
| April Weather | 24°C (76°F) | 0 mm (0.0 inches) | 52% | extreme |
| May Weather | 27°C (81°F) | 0 mm (0.0 inches) | 51% | extreme |
| June Weather | 31°C (89°F) | 12 mm (0.5 inches) | 51% | extreme |
| July Weather | 32°C (90°F) | 57 mm (2.2 inches) | 60% | extreme |
| August Weather | 32°C (90°F) | 74 mm (2.9 inches) | 73% | extreme |
| September Weather | 30°C (87°F) | 76 mm (3.0 inches) | 76% | extreme |
| October Weather | 28°C (83°F) | 18 mm (0.7 inches) | 72% | very high |
| November Weather | 23°C (73°F) | 20 mm (0.8 inches) | 72% | high |
| December Weather | 18°C (65°F) | 17 mm (0.7 inches) | 72% | moderate |