Last updated: August 27, 2025
In Santo Domingo del Rio, Mexico, the average temperature in December hovers around 20°C (68°F), with a comfortable minimum of 10°C (51°F) and a peak of 31°C (88°F). Be prepared for some rain, as the area receives approximately 104 mm (4.1 in) of precipitation over 12 days, contributing to a high average humidity of 88%. Enjoy the season while staying mindful of the weather conditions!
In December in Santo Domingo del Rio, the average temperature is 20°C (68°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 10°C (51°F). This pleasant temperature range makes Santo Domingo del Rio an ideal destination for travelers looking to enjoy moderate weather during their visit.
In Santo Domingo del Rio in December, the total precipitation amount is 104 mm (4.1 in) spread over 12 days.
In Santo Domingo del Rio in December humidity is 88%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making every step feel heavier and every breath a bit more labored, which can be quite draining for traveling.
In Santo Domingo del Rio 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 Santo Domingo del Rio.
UV Risk Categories
Weather in Santo Domingo del Rio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santo Domingo del Rio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 19°C (67°F) | 119 mm (4.7 inches) | 84% | very high |
| February Weather | 21°C (69°F) | 113 mm (4.5 inches) | 80% | extreme |
| March Weather | 22°C (72°F) | 105 mm (4.1 inches) | 73% | extreme |
| April Weather | 24°C (76°F) | 101 mm (4.0 inches) | 67% | extreme |
| May Weather | 26°C (78°F) | 131 mm (5.2 inches) | 72% | extreme |
| June Weather | 25°C (77°F) | 368 mm (14.5 inches) | 73% | extreme |
| July Weather | 25°C (77°F) | 171 mm (6.7 inches) | 76% | extreme |
| August Weather | 25°C (77°F) | 261 mm (10.3 inches) | 80% | extreme |
| September Weather | 25°C (77°F) | 386 mm (15.2 inches) | 84% | extreme |
| October Weather | 24°C (75°F) | 346 mm (13.6 inches) | 89% | extreme |
| November Weather | 21°C (70°F) | 219 mm (8.6 inches) | 88% | very high |
| December Weather | 20°C (68°F) | 104 mm (4.1 inches) | 88% | very high |