Last updated: August 26, 2025
In December, the average temperature in San Francisco Zacacalco, Mexico hovers around 14°C (57°F), with a minimum dip to -2°C (29°F) and a maximum rise to 27°C (80°F). Expect minimal precipitation at just 2 mm (0.1 in) over 0 days, while the air remains damp, with an average humidity of 88%.
In December in San Francisco Zacacalco, the average temperature is 14°C (57°F), with maximums reaching 27°C (80°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures during this month, bringing both warm and cooler clothing options.
In San Francisco Zacacalco in December, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.
In San Francisco Zacacalco in December humidity is 88%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and giving a sense of stickiness that can drain your energy quickly while exploring.
In San Francisco Zacacalco 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 Francisco Zacacalco.
UV Risk Categories
Weather in San Francisco Zacacalco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Francisco Zacacalco, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 6 mm (0.2 inches) | 84% | very high |
| February Weather | 16°C (61°F) | 4 mm (0.2 inches) | 78% | extreme |
| March Weather | 18°C (64°F) | 13 mm (0.5 inches) | 75% | extreme |
| April Weather | 20°C (67°F) | 19 mm (0.7 inches) | 70% | extreme |
| May Weather | 20°C (69°F) | 34 mm (1.3 inches) | 77% | extreme |
| June Weather | 19°C (66°F) | 126 mm (5.0 inches) | 76% | extreme |
| July Weather | 18°C (64°F) | 121 mm (4.8 inches) | 68% | extreme |
| August Weather | 18°C (65°F) | 133 mm (5.2 inches) | 70% | extreme |
| September Weather | 17°C (64°F) | 144 mm (5.7 inches) | 82% | extreme |
| October Weather | 16°C (62°F) | 77 mm (3.0 inches) | 91% | extreme |
| November Weather | 15°C (59°F) | 15 mm (0.6 inches) | 89% | very high |
| December Weather | 14°C (57°F) | 2 mm (0.1 inches) | 88% | very high |