Last updated: August 27, 2025
In San Juan de Llanos, Mexico, the average temperature in December is a cool 13°C (55°F). Expect a minimum of -1°C (30°F) and a comfortable maximum of 26°C (78°F). During this month, you'll experience an average precipitation of just 6 mm (0.3 in) over 1 day, with humidity levels hovering around 81%, creating a refreshing atmosphere.
In December in San Juan de Llanos, the average temperature is 13°C (55°F). Maximum temperatures can reach 26°C (78°F), while minimums can drop as low as -1°C (30°F). This variation makes it a great time for travelers to enjoy a mix of mild days and cooler evenings, perfect for exploring the outdoors.
In San Juan de Llanos in December, the precipitation amount is 6 mm (0.3 in) over the course of 1 day.
In San Juan de Llanos in December, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.
In San Juan de Llanos 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 San Juan de Llanos.
UV Risk Categories
Weather in San Juan de Llanos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Juan de Llanos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 7 mm (0.3 inches) | 74% | very high |
| February Weather | 15°C (59°F) | 9 mm (0.3 inches) | 65% | extreme |
| March Weather | 17°C (64°F) | 14 mm (0.5 inches) | 58% | extreme |
| April Weather | 19°C (67°F) | 8 mm (0.3 inches) | 58% | extreme |
| May Weather | 21°C (69°F) | 55 mm (2.2 inches) | 67% | extreme |
| June Weather | 19°C (67°F) | 180 mm (7.1 inches) | 76% | extreme |
| July Weather | 18°C (65°F) | 139 mm (5.5 inches) | 67% | extreme |
| August Weather | 19°C (66°F) | 112 mm (4.4 inches) | 68% | extreme |
| September Weather | 18°C (64°F) | 159 mm (6.3 inches) | 81% | extreme |
| October Weather | 16°C (62°F) | 66 mm (2.6 inches) | 83% | extreme |
| November Weather | 14°C (58°F) | 23 mm (0.9 inches) | 84% | very high |
| December Weather | 13°C (55°F) | 6 mm (0.3 inches) | 81% | very high |