Last updated: August 26, 2025
In December, the average temperature in San Cayetano, Mexico hovers around 19°C (67°F), offering a comfortable climate for activities. However, temperatures can fluctuate significantly, with a minimum of 0°C (32°F) and a maximum of 35°C (96°F). Prepare for a touch of rain, as the area sees about 11 mm (0.4 in) of precipitation over just 2 days. Additionally, expect an average humidity level of 89%, adding to the overall atmosphere of the season.
In December in San Cayetano, the average temperature is 19°C (67°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 0°C (32°F). Travelers should be prepared for both warm days and chilly nights.
In San Cayetano in December, the precipitation amount is 11 mm (0.4 in) over the course of 2 days.
In San Cayetano in December, humidity is 89%. With an average temperature of 19°C (67°F), this humidity feels like a warm, muggy blanket enveloping you, making outdoor activities uncomfortable and encouraging travelers to seek shaded areas or indoor attractions during the hottest parts of the day.
In San Cayetano 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 San Cayetano, you can refer to this Hourly UV Index in San Cayetano.
UV Risk Categories
Weather in San Cayetano varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Cayetano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 18°C (65°F) | 13 mm (0.5 inches) | 87% | high |
| February Weather | 21°C (69°F) | 15 mm (0.6 inches) | 85% | very high |
| March Weather | 24°C (76°F) | 27 mm (1.1 inches) | 83% | extreme |
| April Weather | 27°C (81°F) | 40 mm (1.6 inches) | 84% | extreme |
| May Weather | 30°C (86°F) | 61 mm (2.4 inches) | 85% | extreme |
| June Weather | 30°C (87°F) | 84 mm (3.3 inches) | 79% | extreme |
| July Weather | 31°C (88°F) | 81 mm (3.2 inches) | 71% | extreme |
| August Weather | 31°C (89°F) | 34 mm (1.3 inches) | 72% | extreme |
| September Weather | 29°C (84°F) | 120 mm (4.7 inches) | 80% | extreme |
| October Weather | 26°C (78°F) | 79 mm (3.1 inches) | 85% | very high |
| November Weather | 22°C (71°F) | 21 mm (0.8 inches) | 88% | very high |
| December Weather | 19°C (67°F) | 11 mm (0.4 inches) | 89% | high |