Last updated: August 27, 2025
In Santa Maria, Mexico, the average temperature in December is a comfortable 15°C (59°F). Expect minimum temperatures to dip to 3°C (38°F), while the maximum can reach a warm 27°C (80°F). With an average precipitation of 10 mm (0.4 in) spread over about 2 days, it's advisable to keep an umbrella handy. The average humidity hovers around 74%, adding a touch of mugginess to the air.
In December in Santa Maria, the average temperature is 15°C (59°F). Maximums can reach 27°C (80°F), and minimums can drop as low as 3°C (38°F). It's a great time to explore Santa Maria with its mild weather and pleasant conditions for outdoor activities.
In Santa Maria in December, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.
In Santa Maria in December, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.
In Santa Maria in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Santa Maria.
UV Risk Categories
Weather in Santa Maria varies notably across the year, with each month offering distinct climate conditions. This page compares December’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 |