Last updated: August 26, 2025
The average temperature in Santa Maria, Mexico during December hovers around 14°C (57°F), with potential extremes ranging from a chilly -3°C (27°F) to a warm 30°C (87°F). Expect 21 mm (0.8 in) of precipitation over approximately 3 days, and note that average humidity is a humid 87%.
In December, in Santa Maria, the average temperature is 14°C (57°F). Maximum temperatures can reach 30°C (87°F), while minimums can dip as low as -3°C (27°F). This temperature range offers a mix of mild and warm days, making it a great time for outdoor activities and exploration in Santa Maria.
In Santa Maria in December, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.
In Santa Maria in December humidity is 87%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every breath feel heavy and sticky, which can be quite challenging for travelers exploring the city.
In Santa Maria in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check 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 | 12°C (54°F) | 25 mm (1.0 inches) | 76% | moderate |
| February Weather | 14°C (57°F) | 28 mm (1.1 inches) | 75% | very high |
| March Weather | 19°C (67°F) | 29 mm (1.1 inches) | 70% | very high |
| April Weather | 23°C (73°F) | 42 mm (1.7 inches) | 73% | extreme |
| May Weather | 27°C (80°F) | 86 mm (3.4 inches) | 79% | extreme |
| June Weather | 30°C (86°F) | 43 mm (1.7 inches) | 78% | extreme |
| July Weather | 31°C (88°F) | 36 mm (1.4 inches) | 65% | extreme |
| August Weather | 31°C (88°F) | 28 mm (1.1 inches) | 55% | extreme |
| September Weather | 28°C (83°F) | 146 mm (5.8 inches) | 68% | extreme |
| October Weather | 23°C (73°F) | 60 mm (2.4 inches) | 77% | very high |
| November Weather | 17°C (63°F) | 15 mm (0.6 inches) | 84% | high |
| December Weather | 14°C (57°F) | 21 mm (0.8 inches) | 87% | moderate |