Last updated: August 27, 2025
In San Jose de Castellanos, Mexico, the average temperature in December is a comfortable 12°C (54°F). However, be prepared for a wide range of temperatures, with daytime highs soaring to 26°C (79°F) and nighttime lows dropping to -4°C (24°F). During this month, expect minimal rainfall, with an average precipitation of just 8 mm (0.3 in) spread over 1 day. The air tends to be quite humid, with an average humidity level of 81%.
In December in San Jose de Castellanos, the average temperature is 12°C (54°F). The maximum can reach 26°C (79°F), while the minimum can drop as low as -4°C (24°F). This temperature range makes San Jose de Castellanos an ideal destination for travelers seeking a mix of mild weather and seasonal variation.
In San Jose de Castellanos in December, the precipitation amount is 8 mm (0.3 in) over the course of 1 day.
In San Jose de Castellanos in December humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.
In San Jose de Castellanos 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 Jose de Castellanos.
UV Risk Categories
Weather in San Jose de Castellanos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Jose de Castellanos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 12°C (54°F) | 9 mm (0.4 inches) | 74% | very high |
| February Weather | 14°C (58°F) | 9 mm (0.3 inches) | 65% | extreme |
| March Weather | 17°C (63°F) | 10 mm (0.4 inches) | 58% | extreme |
| April Weather | 19°C (67°F) | 5 mm (0.2 inches) | 58% | extreme |
| May Weather | 21°C (69°F) | 36 mm (1.4 inches) | 67% | extreme |
| June Weather | 20°C (68°F) | 115 mm (4.5 inches) | 76% | extreme |
| July Weather | 19°C (66°F) | 87 mm (3.4 inches) | 67% | extreme |
| August Weather | 19°C (66°F) | 71 mm (2.8 inches) | 68% | extreme |
| September Weather | 18°C (64°F) | 123 mm (4.8 inches) | 81% | extreme |
| October Weather | 17°C (62°F) | 46 mm (1.8 inches) | 83% | extreme |
| November Weather | 14°C (58°F) | 16 mm (0.6 inches) | 84% | very high |
| December Weather | 12°C (54°F) | 8 mm (0.3 inches) | 81% | very high |