Last updated: August 26, 2025
In December, the average temperature in San Juan (San Juan de Coyotillos), Mexico hovers around 13°C (56°F), providing a cool yet comfortable climate. Expect a minimum drop to -5°C (23°F) and a warm peak of 27°C (81°F). During this month, the precipitation totals approximately 9 mm (0.4 in), typically spread over just 1 day, while average humidity levels are quite high at 87%.
In December in San Juan (San Juan de Coyotillos), the average temperature is 13°C (56°F). The maximum can reach 27°C (81°F), while the minimum can dip as low as -5°C (23°F). This diverse temperature range suggests that travelers should prepare for both warm and chilly conditions during their visit.
In San Juan (San Juan de Coyotillos) in December, the precipitation amount is 9 mm (0.4 in) over the course of 1 day.
In San Juan (San Juan de Coyotillos) in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.
In San Juan (San Juan de Coyotillos) 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 (San Juan de Coyotillos).
UV Risk Categories
Weather in San Juan (San Juan de Coyotillos) varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Juan (San Juan de Coyotillos), focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 11 mm (0.4 inches) | 75% | very high |
| February Weather | 15°C (60°F) | 10 mm (0.4 inches) | 69% | extreme |
| March Weather | 18°C (65°F) | 14 mm (0.5 inches) | 65% | extreme |
| April Weather | 20°C (69°F) | 11 mm (0.4 inches) | 64% | extreme |
| May Weather | 22°C (72°F) | 40 mm (1.6 inches) | 75% | extreme |
| June Weather | 21°C (70°F) | 84 mm (3.3 inches) | 78% | extreme |
| July Weather | 20°C (69°F) | 69 mm (2.7 inches) | 67% | extreme |
| August Weather | 21°C (69°F) | 47 mm (1.9 inches) | 64% | extreme |
| September Weather | 19°C (67°F) | 86 mm (3.4 inches) | 81% | extreme |
| October Weather | 18°C (64°F) | 48 mm (1.9 inches) | 85% | extreme |
| November Weather | 15°C (60°F) | 16 mm (0.6 inches) | 87% | very high |
| December Weather | 13°C (56°F) | 9 mm (0.4 inches) | 87% | very high |