Last updated: August 27, 2025
In December, the average temperature in San Juan Jaltepec, Mexico is a comfortable 19°C (66°F). Expect a range from a refreshing 8°C (47°F) to a warm 33°C (91°F). During this time, precipitation amounts to 90 mm (3.6 in) spread over 12 days, contributing to an average humidity of 88%.
In December in San Juan Jaltepec, the average temperature is 19°C (66°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 8°C (47°F). This variety in temperatures makes it an ideal time for travelers to enjoy both warm sunny days and cooler evenings.
In San Juan Jaltepec in December, the precipitation amount is 90 mm (3.6 in) spread over 12 days.
In San Juan Jaltepec in December humidity is 88%. With an average temperature of 19°C (66°F), this humidity feels like you're stepping into a warm, enveloping blanket, making outdoor exploration a bit challenging as the air feels heavy and sticky, often sapping your energy and making you crave shade and cool refreshments.
In San Juan Jaltepec 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 Jaltepec.
UV Risk Categories
Weather in San Juan Jaltepec varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Juan Jaltepec, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 19°C (66°F) | 97 mm (3.8 inches) | 84% | very high |
| February Weather | 20°C (68°F) | 86 mm (3.4 inches) | 80% | extreme |
| March Weather | 22°C (71°F) | 61 mm (2.4 inches) | 73% | extreme |
| April Weather | 24°C (76°F) | 52 mm (2.0 inches) | 67% | extreme |
| May Weather | 26°C (78°F) | 103 mm (4.0 inches) | 72% | extreme |
| June Weather | 24°C (76°F) | 397 mm (15.6 inches) | 73% | extreme |
| July Weather | 24°C (75°F) | 190 mm (7.5 inches) | 76% | extreme |
| August Weather | 24°C (75°F) | 363 mm (14.3 inches) | 80% | extreme |
| September Weather | 24°C (75°F) | 348 mm (13.7 inches) | 84% | extreme |
| October Weather | 23°C (73°F) | 344 mm (13.6 inches) | 89% | extreme |
| November Weather | 20°C (69°F) | 184 mm (7.3 inches) | 88% | very high |
| December Weather | 19°C (66°F) | 90 mm (3.6 inches) | 88% | very high |