Last updated: August 27, 2025
In September, the average temperature in Santa Cecilia, Mexico is a comfortable 19°C (67°F). Expect temperatures to range from a minimum of 8°C (47°F) to a maximum of 31°C (88°F). With an average humidity of 81%, the atmosphere can feel quite moist, particularly during the 15 days when precipitation totals around 131 mm (5.2 in). Enjoy the season while preparing for some wet days!
In September in Santa Cecilia, the average temperature is 19°C (67°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 8°C (47°F). This climate makes it an ideal time for travelers to enjoy outdoor activities while being prepared for varying temperatures.
In Santa Cecilia in September, the precipitation amount is 131 mm (5.2 in) over a span of 15 days.
In Santa Cecilia in September humidity is 81%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick, prompting you to seek shade and hydration frequently.
In Santa Cecilia 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 Cecilia, you can check here.
UV Risk Categories
Weather in Santa Cecilia varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Cecilia, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 3 mm (0.1 inches) | 74% | very high |
| February Weather | 17°C (62°F) | 6 mm (0.2 inches) | 65% | extreme |
| March Weather | 19°C (67°F) | 9 mm (0.3 inches) | 58% | extreme |
| April Weather | 21°C (71°F) | 7 mm (0.3 inches) | 58% | extreme |
| May Weather | 23°C (73°F) | 38 mm (1.5 inches) | 67% | extreme |
| June Weather | 21°C (70°F) | 145 mm (5.7 inches) | 76% | extreme |
| July Weather | 20°C (68°F) | 117 mm (4.6 inches) | 67% | extreme |
| August Weather | 20°C (69°F) | 94 mm (3.7 inches) | 68% | extreme |
| September Weather | 19°C (67°F) | 131 mm (5.2 inches) | 81% | extreme |
| October Weather | 18°C (65°F) | 50 mm (2.0 inches) | 83% | extreme |
| November Weather | 16°C (61°F) | 18 mm (0.7 inches) | 84% | very high |
| December Weather | 14°C (58°F) | 5 mm (0.2 inches) | 81% | very high |