Last updated: August 27, 2025
In December, the average temperature in Santa Rosa, Mexico is a pleasant 16°C (61°F). However, be prepared for a range, as it can dip to a chilly 1°C (34°F) or soar up to a warm 33°C (92°F). Expect about 26 mm (1.0 in) of precipitation over 4 days, alongside an average humidity level of 80%.
In December in Santa Rosa, the average temperature is 16°C (61°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 1°C (34°F). It's a great time to visit, as you can experience a wide range of temperatures perfect for outdoor activities and exploration.
In Santa Rosa in December, the precipitation amount is 26 mm (1.0 in) over the course of 4 days.
In Santa Rosa in December, humidity is 80%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapped around you, making sightseeing a sweat-inducing challenge but also lending a lush vibrancy to the surroundings that can enhance your travel experience.
In Santa Rosa in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Santa Rosa, you can refer to this Hourly UV Index in Santa Rosa.
UV Risk Categories
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 28 mm (1.1 inches) | 75% | high |
| February Weather | 16°C (62°F) | 20 mm (0.8 inches) | 70% | very high |
| March Weather | 20°C (69°F) | 36 mm (1.4 inches) | 65% | extreme |
| April Weather | 23°C (73°F) | 48 mm (1.9 inches) | 59% | extreme |
| May Weather | 26°C (79°F) | 72 mm (2.8 inches) | 66% | extreme |
| June Weather | 27°C (81°F) | 56 mm (2.2 inches) | 71% | extreme |
| July Weather | 28°C (82°F) | 71 mm (2.8 inches) | 57% | extreme |
| August Weather | 28°C (83°F) | 9 mm (0.3 inches) | 58% | extreme |
| September Weather | 26°C (78°F) | 104 mm (4.1 inches) | 72% | extreme |
| October Weather | 22°C (72°F) | 52 mm (2.0 inches) | 76% | extreme |
| November Weather | 18°C (65°F) | 31 mm (1.2 inches) | 81% | very high |
| December Weather | 16°C (61°F) | 26 mm (1.0 inches) | 80% | high |