Last updated: August 28, 2025
In Santa Lucia, Uruguay, the average temperature in December hovers around 22°C (72°F). However, temperatures can vary significantly, with a minimum of 8°C (47°F) and a scorching maximum of 36°C (97°F). During this month, expect approximately 62 mm (2.4 in) of precipitation spread over 7 days, accompanied by an average humidity level of 65%.
In December in Santa Lucia, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 8°C (47°F). This weather makes it an ideal time for outdoor activities and exploring the local attractions while enjoying comfortable temperatures.
In Santa Lucia in December, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 days.
In Santa Lucia in December, humidity is 65%. With an average temperature of 22°C (72°F), this humidity feels like a warm, tropical embrace that can make outdoor activities quite sticky, yet still enjoyable if you stay hydrated and take breaks in the shade.
In Santa Lucia in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Lucia, you can check here.
UV Risk Categories
Weather in Santa Lucia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Lucia, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (75°F) | 71 mm (2.8 inches) | 63% | extreme |
| February Weather | 23°C (73°F) | 89 mm (3.5 inches) | 69% | extreme |
| March Weather | 21°C (70°F) | 85 mm (3.4 inches) | 73% | extreme |
| April Weather | 18°C (66°F) | 76 mm (3.0 inches) | 79% | high |
| May Weather | 14°C (58°F) | 108 mm (4.3 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 88 mm (3.5 inches) | 80% | moderate |
| July Weather | 11°C (52°F) | 94 mm (3.7 inches) | 72% | moderate |
| August Weather | 12°C (54°F) | 82 mm (3.2 inches) | 72% | high |
| September Weather | 14°C (58°F) | 79 mm (3.1 inches) | 76% | very high |
| October Weather | 16°C (62°F) | 90 mm (3.5 inches) | 71% | extreme |
| November Weather | 20°C (68°F) | 65 mm (2.6 inches) | 68% | extreme |
| December Weather | 22°C (72°F) | 62 mm (2.4 inches) | 65% | extreme |