Last updated: August 27, 2025
In December, the average temperature in Santa Ana, Mexico hovers around 13°C (56°F). You might experience a chill with minimums dipping to -1°C (30°F), while the warmest days can reach up to 28°C (83°F). Expect 25 mm (1.0 in) of precipitation spread over 4 days, contributing to the region's average humidity of 81%.
In December in Santa Ana, the average temperature is 13°C (56°F). The maximum can reach 28°C (83°F), and the minimum can be as low as -1°C (30°F). It's a great time to visit for those who enjoy mild weather and don't mind the occasional chill.
In Santa Ana in December, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.
In Santa Ana in December, humidity is 81%. With an average temperature of 13°C (56°F), this humidity feels like a blanket of damp air that clings to your skin, making it essential to pack breathable clothing and stay hydrated while exploring.
In Santa Ana 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 Ana.
UV Risk Categories
Weather in Santa Ana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Ana, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 32 mm (1.3 inches) | 74% | moderate |
| February Weather | 13°C (57°F) | 31 mm (1.2 inches) | 71% | high |
| March Weather | 17°C (63°F) | 22 mm (0.9 inches) | 60% | very high |
| April Weather | 22°C (71°F) | 4 mm (0.2 inches) | 43% | extreme |
| May Weather | 25°C (77°F) | 3 mm (0.1 inches) | 32% | extreme |
| June Weather | 30°C (87°F) | 6 mm (0.2 inches) | 28% | extreme |
| July Weather | 29°C (85°F) | 85 mm (3.4 inches) | 38% | extreme |
| August Weather | 29°C (85°F) | 59 mm (2.3 inches) | 60% | extreme |
| September Weather | 27°C (81°F) | 49 mm (1.9 inches) | 72% | extreme |
| October Weather | 23°C (74°F) | 13 mm (0.5 inches) | 66% | very high |
| November Weather | 19°C (66°F) | 33 mm (1.3 inches) | 74% | high |
| December Weather | 13°C (56°F) | 25 mm (1.0 inches) | 81% | moderate |