Last updated: August 27, 2025
In September, the average temperature in Santa Maria, Mexico hovers around 19°C (66°F). Expect a pleasant range, with minima dipping to 11°C (53°F) and maxima reaching up to 27°C (81°F). However, be prepared for some wet days, as 148 mm (5.8 in) of precipitation may fall over approximately 20 days. With an average humidity of 85%, it's a month to enjoy the fresh air, but don't forget your umbrella!
In September in Santa Maria, the average temperature is 19°C (66°F). Maximums can reach 27°C (81°F), and minimums can be as low as 11°C (53°F). Overall, it's a pleasant time to explore Santa Maria with comfortable temperatures, making it ideal for outdoor activities.
In Santa Maria in September, the total precipitation amount is 148 mm (5.8 in) spread over 20 days.
In Santa Maria in September humidity is 85%. With an average temperature of 19°C (66°F), this humidity feels like a warm, sticky embrace that can make outdoor adventures feel more exhausting, as the air weighs heavy and every step can feel like a mini workout.
In Santa Maria 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 Santa Maria, you can check here.
UV Risk Categories
Weather in Santa Maria varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Maria, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 15°C (59°F) | 8 mm (0.3 inches) | 70% | very high |
| February Weather | 17°C (62°F) | 11 mm (0.4 inches) | 64% | extreme |
| March Weather | 19°C (67°F) | 15 mm (0.6 inches) | 54% | extreme |
| April Weather | 21°C (70°F) | 10 mm (0.4 inches) | 61% | extreme |
| May Weather | 21°C (71°F) | 60 mm (2.4 inches) | 75% | extreme |
| June Weather | 20°C (69°F) | 131 mm (5.2 inches) | 83% | extreme |
| July Weather | 19°C (66°F) | 146 mm (5.7 inches) | 83% | extreme |
| August Weather | 19°C (66°F) | 166 mm (6.5 inches) | 85% | extreme |
| September Weather | 19°C (66°F) | 148 mm (5.8 inches) | 85% | extreme |
| October Weather | 18°C (65°F) | 75 mm (3.0 inches) | 79% | extreme |
| November Weather | 17°C (62°F) | 38 mm (1.5 inches) | 76% | very high |
| December Weather | 15°C (59°F) | 10 mm (0.4 inches) | 74% | very high |