Last updated: August 27, 2025
In December, the average temperature in Santa Maria, Mexico hovers around 14°C (57°F). You can expect a minimum chill of -2°C (29°F) and a maximum warmth of 28°C (83°F). With an average humidity of 91%, be prepared for a slightly muggy atmosphere. Additionally, anticipate about 15 mm (0.6 in) of precipitation over 4 days, making it wise to keep an umbrella handy!
In December in Santa Maria, the average temperature is 14°C (57°F). The maximum can reach 28°C (83°F) and the minimum can be as low as -2°C (29°F). This diverse temperature range makes Santa Maria a versatile destination for travelers, suitable for both warm and cool weather activities.
In Santa Maria in December, the precipitation amount is 15 mm (0.6 in) occurring over the course of 4 days.
In Santa Maria in December humidity is 91%. With an average temperature of 14°C (57°F), this humidity feels like a blanket of dampness enveloping you, making outdoor activities feel heavy and uncomfortable for traveling.
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 | 13°C (56°F) | 24 mm (1.0 inches) | 88% | very high |
| February Weather | 16°C (60°F) | 21 mm (0.8 inches) | 86% | extreme |
| March Weather | 18°C (64°F) | 30 mm (1.2 inches) | 83% | extreme |
| April Weather | 20°C (68°F) | 55 mm (2.1 inches) | 80% | extreme |
| May Weather | 22°C (71°F) | 75 mm (2.9 inches) | 82% | extreme |
| June Weather | 21°C (69°F) | 147 mm (5.8 inches) | 79% | extreme |
| July Weather | 20°C (68°F) | 123 mm (4.8 inches) | 72% | extreme |
| August Weather | 20°C (69°F) | 129 mm (5.1 inches) | 74% | extreme |
| September Weather | 20°C (67°F) | 174 mm (6.9 inches) | 84% | extreme |
| October Weather | 18°C (65°F) | 138 mm (5.4 inches) | 92% | extreme |
| November Weather | 15°C (60°F) | 47 mm (1.8 inches) | 91% | very high |
| December Weather | 14°C (57°F) | 15 mm (0.6 inches) | 91% | very high |