Last updated: August 27, 2025
In December, the average temperature in San Ignacio Rio Muerto, Mexico hovers around 18°C (65°F), offering a pleasant climate for outdoor activities. Temperatures can swing from a chilly 5°C (41°F) at their lowest to a warm 31°C (87°F) at their peak. Rainfall is relatively light, with an average precipitation of 14 mm (0.6 in) over just 2 days. Additionally, expect a comfortable average humidity of 72%, making it an inviting destination this time of year!
In December in San Ignacio Rio Muerto, the average temperature is 18°C (65°F), with maximums reaching up to 31°C (87°F) and minimums dropping as low as 5°C (41°F). It's a great time to explore and enjoy outdoor activities, so pack accordingly for both warm days and cooler evenings!
In San Ignacio Rio Muerto in December, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.
In San Ignacio Rio Muerto in December humidity is 72%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace, making traveling somewhat uncomfortable as the air clings to your skin and the heat can be stifling, yet it's perfect for enjoying leisurely strolls under the shade.
In San Ignacio Rio Muerto in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in San Ignacio Rio Muerto.
UV Risk Categories
Weather in San Ignacio Rio Muerto varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Ignacio Rio Muerto, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (63°F) | 10 mm (0.4 inches) | 71% | high |
| February Weather | 18°C (65°F) | 9 mm (0.3 inches) | 66% | very high |
| March Weather | 20°C (69°F) | 12 mm (0.5 inches) | 58% | very high |
| April Weather | 24°C (75°F) | 0 mm (0.0 inches) | 52% | extreme |
| May Weather | 27°C (80°F) | 0 mm (0.0 inches) | 51% | extreme |
| June Weather | 31°C (88°F) | 10 mm (0.4 inches) | 51% | extreme |
| July Weather | 32°C (91°F) | 41 mm (1.6 inches) | 60% | extreme |
| August Weather | 32°C (90°F) | 63 mm (2.5 inches) | 73% | extreme |
| September Weather | 30°C (87°F) | 68 mm (2.7 inches) | 76% | extreme |
| October Weather | 28°C (82°F) | 18 mm (0.7 inches) | 72% | very high |
| November Weather | 23°C (73°F) | 17 mm (0.7 inches) | 72% | high |
| December Weather | 18°C (65°F) | 14 mm (0.6 inches) | 72% | moderate |