Last updated: August 28, 2025
In September, the average temperature in La Paz, Uruguay is a pleasant 14°C (57°F), with daytime highs reaching up to 28°C (83°F) and nighttime lows dropping to about 3°C (38°F). While you soak up the sun, be prepared for about 81 mm (3.2 in) of precipitation spread over 7 days, contributing to an average humidity of 76%.
In September in La Paz, the average temperature is 14°C (57°F). The maximum can reach 28°C (83°F), and the minimum can be as low as 3°C (38°F). This makes La Paz an ideal destination for travelers seeking a mild climate with pleasant daytime warmth and cooler evenings.
In La Paz in September, the precipitation amount is 81 mm (3.2 in) over a period of 7 days.
In La Paz in September humidity is 76%. With an average temperature of 14°C (57°F), this humidity feels like a warm blanket wrapped around you, creating a heavy atmosphere that can make outdoor activities feel sluggish and stifling, urging travelers to seek shade and refreshment more frequently.
In La Paz 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 La Paz.
UV Risk Categories
Weather in La Paz varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in La Paz, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (75°F) | 70 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) | 79 mm (3.1 inches) | 73% | extreme |
| April Weather | 19°C (66°F) | 74 mm (2.9 inches) | 79% | high |
| May Weather | 15°C (58°F) | 112 mm (4.4 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 87 mm (3.4 inches) | 80% | moderate |
| July Weather | 11°C (52°F) | 105 mm (4.1 inches) | 72% | moderate |
| August Weather | 12°C (54°F) | 83 mm (3.3 inches) | 72% | high |
| September Weather | 14°C (57°F) | 81 mm (3.2 inches) | 76% | very high |
| October Weather | 16°C (61°F) | 86 mm (3.4 inches) | 71% | very high |
| November Weather | 19°C (67°F) | 66 mm (2.6 inches) | 68% | extreme |
| December Weather | 22°C (71°F) | 61 mm (2.4 inches) | 65% | extreme |