Last updated: August 27, 2025
In Santa Ana Viejo, Mexico, the average temperature in December hovers around 14°C (57°F), with temperatures ranging from a chilly -1°C (31°F) to a warm 29°C (84°F). Expect about 20 mm (0.8 in) of precipitation over approximately 3 days, contributing to an average humidity of 81%. Whether you're enjoying the mild weather or braving the extremes, be prepared for a dynamic climate!
In December in Santa Ana Viejo, the average temperature is 14°C (57°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as -1°C (31°F). This makes it a great time for travelers to experience a diverse range of weather, so pack accordingly to enjoy both warm days and cooler evenings.
In Santa Ana Viejo in December, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 days.
In Santa Ana Viejo in December, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.
In Santa Ana Viejo 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 Viejo.
UV Risk Categories
Weather in Santa Ana Viejo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Ana Viejo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 25 mm (1.0 inches) | 74% | moderate |
| February Weather | 14°C (58°F) | 26 mm (1.0 inches) | 71% | high |
| March Weather | 18°C (64°F) | 18 mm (0.7 inches) | 60% | very high |
| April Weather | 23°C (73°F) | 3 mm (0.1 inches) | 43% | extreme |
| May Weather | 26°C (79°F) | 2 mm (0.1 inches) | 32% | extreme |
| June Weather | 31°C (88°F) | 4 mm (0.2 inches) | 28% | extreme |
| July Weather | 31°C (88°F) | 62 mm (2.4 inches) | 38% | extreme |
| August Weather | 31°C (88°F) | 52 mm (2.1 inches) | 60% | extreme |
| September Weather | 29°C (84°F) | 59 mm (2.3 inches) | 72% | extreme |
| October Weather | 24°C (76°F) | 11 mm (0.4 inches) | 66% | very high |
| November Weather | 19°C (67°F) | 29 mm (1.1 inches) | 74% | high |
| December Weather | 14°C (57°F) | 20 mm (0.8 inches) | 81% | moderate |