Last updated: August 27, 2025
In December, the average temperature in Valle del Rosario, Mexico hovers around 11°C (51°F). Expect a range from a chilly -7°C (20°F) to a warm 28°C (83°F). During this month, precipitation averages 18 mm (0.7 in) over just 2 days, while humidity levels remain high at 87%.
In December in Valle del Rosario, the average temperature is 11°C (51°F). Maximums can reach 28°C (83°F), while minimums can drop as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures when planning their visit.
In Valle del Rosario in December, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.
In Valle del Rosario in December humidity is 87%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill wrapping around you, making outdoor excursions a bit uncomfortable as the air feels thick and heavy, urging you to seek shelter more often than not.
In Valle del Rosario 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 Valle del Rosario, you can refer to this Hourly UV Index in Valle del Rosario.
UV Risk Categories
Weather in Valle del Rosario varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Valle del Rosario, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 10°C (51°F) | 5 mm (0.2 inches) | 75% | high |
| February Weather | 13°C (55°F) | 5 mm (0.2 inches) | 65% | very high |
| March Weather | 16°C (62°F) | 3 mm (0.1 inches) | 58% | extreme |
| April Weather | 20°C (68°F) | 2 mm (0.1 inches) | 48% | extreme |
| May Weather | 24°C (75°F) | 3 mm (0.1 inches) | 48% | extreme |
| June Weather | 27°C (80°F) | 25 mm (1.0 inches) | 54% | extreme |
| July Weather | 24°C (76°F) | 80 mm (3.1 inches) | 72% | extreme |
| August Weather | 24°C (76°F) | 71 mm (2.8 inches) | 77% | extreme |
| September Weather | 21°C (71°F) | 81 mm (3.2 inches) | 86% | extreme |
| October Weather | 19°C (67°F) | 27 mm (1.1 inches) | 82% | extreme |
| November Weather | 15°C (59°F) | 14 mm (0.6 inches) | 85% | very high |
| December Weather | 11°C (51°F) | 18 mm (0.7 inches) | 87% | high |