Last updated: August 28, 2025
In September, the average temperature in Santa Lucia, Uruguay hovers around 14°C (58°F), with temperatures ranging from a chilly 2°C (36°F) to a warm 29°C (85°F). Expect 79 mm (3.1 in) of precipitation spread over 7 days, contributing to an average humidity level of 76%. Plan accordingly for a mix of mild weather and occasional showers!
In September in Santa Lucia, the average temperature is 14°C (58°F), with maximums reaching up to 29°C (85°F) and minimums dipping as low as 2°C (36°F). This mild climate makes Santa Lucia an ideal destination for outdoor activities and exploration during this time of year.
In Santa Lucia in September, the total precipitation amount is 79 mm (3.1 in) distributed over a period of 7 days.
In Santa Lucia in September humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.
In Santa Lucia in September, 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 Santa Lucia.
UV Risk Categories
Weather in Santa Lucia varies notably across the year, with each month offering distinct climate conditions. This page compares September’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 |