Last updated: August 27, 2025
In December, the average temperature in Plan de San Luis, Mexico hovers around 23°C (73°F). Expect a comfortable range with minimums dipping to 11°C (53°F) and maximums soaring to 34°C (94°F). Rainfall is moderate, with 46 mm (1.8 in) spread across about 10 days. However, high humidity levels at 88% can make the days feel quite warm and sticky.
In December in Plan de San Luis, the average temperature is 23°C (73°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 11°C (53°F). Travelers should pack for a range of temperatures and enjoy a warm, pleasant climate.
In Plan de San Luis in December, the precipitation amount is 46 mm (1.8 in) over the course of 10 days.
In Plan de San Luis in December, humidity is 88%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky blanket enveloping you, making travel feel heavy and draining without frequent breaks for hydration and shade.
In Plan de San Luis 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 Plan de San Luis.
UV Risk Categories
Weather in Plan de San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Plan de San Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (73°F) | 50 mm (2.0 inches) | 84% | very high |
| February Weather | 24°C (75°F) | 39 mm (1.5 inches) | 80% | extreme |
| March Weather | 26°C (78°F) | 30 mm (1.2 inches) | 73% | extreme |
| April Weather | 28°C (82°F) | 36 mm (1.4 inches) | 67% | extreme |
| May Weather | 29°C (85°F) | 68 mm (2.7 inches) | 72% | extreme |
| June Weather | 28°C (82°F) | 274 mm (10.8 inches) | 73% | extreme |
| July Weather | 27°C (81°F) | 253 mm (10.0 inches) | 76% | extreme |
| August Weather | 27°C (81°F) | 310 mm (12.2 inches) | 80% | extreme |
| September Weather | 27°C (81°F) | 286 mm (11.3 inches) | 84% | extreme |
| October Weather | 26°C (79°F) | 272 mm (10.7 inches) | 89% | extreme |
| November Weather | 24°C (75°F) | 87 mm (3.4 inches) | 88% | very high |
| December Weather | 23°C (73°F) | 46 mm (1.8 inches) | 88% | very high |