Last updated: August 27, 2025
In September, the average temperature in Santa Lucia, Peru hovers around 8°C (46°F). Expect a chilly climate where the temperature can drop to a minimum of -5°C (22°F), while reaching a pleasant maximum of 19°C (67°F). Be prepared for precipitation with about 50 mm (2.0 in) expected over 9 days, and a relative humidity of 67% adds to the overall atmosphere.
In September in Santa Lucia, the average temperature is 8°C (46°F). The maximum can reach 19°C (67°F) and the minimum can be as low as -5°C (22°F). This makes it a perfect time for travelers to enjoy a mix of mild and chilly weather, ideal for exploring both indoor attractions and outdoor activities.
In Santa Lucia in September, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.
In Santa Lucia in September, humidity is 67%. With an average temperature of 8°C (46°F), this humidity feels like a damp blanket enveloping you, making it feel colder than it actually is, which can be quite refreshing for exploring but may also require extra layers for comfort while traveling.
In Santa Lucia in September, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For 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 | 7°C (45°F) | 194 mm (7.6 inches) | 92% | extreme |
| February Weather | 7°C (46°F) | 215 mm (8.5 inches) | 93% | extreme |
| March Weather | 7°C (45°F) | 202 mm (7.9 inches) | 92% | extreme |
| April Weather | 7°C (44°F) | 85 mm (3.3 inches) | 91% | extreme |
| May Weather | 6°C (43°F) | 31 mm (1.2 inches) | 87% | extreme |
| June Weather | 6°C (42°F) | 7 mm (0.3 inches) | 76% | extreme |
| July Weather | 6°C (42°F) | 8 mm (0.3 inches) | 57% | extreme |
| August Weather | 7°C (44°F) | 7 mm (0.3 inches) | 51% | extreme |
| September Weather | 8°C (46°F) | 50 mm (2.0 inches) | 67% | extreme |
| October Weather | 8°C (47°F) | 76 mm (3.0 inches) | 77% | extreme |
| November Weather | 9°C (49°F) | 76 mm (3.0 inches) | 85% | extreme |
| December Weather | 8°C (47°F) | 167 mm (6.6 inches) | 90% | extreme |