Last updated: August 27, 2025
In September, the average temperature in San Pedro, Peru hovers around 6°C (44°F). Expect chilly nights with a minimum dropping to -6°C (21°F), while days can be pleasantly mild, reaching a maximum of 19°C (67°F). During this month, precipitation accumulates to 37 mm (1.5 in) spread over about 14 days, resulting in an average humidity of 67%.
In September in San Pedro, the average temperature is 6°C (44°F). The maximum can reach 19°C (67°F) and the minimum can be as low as -6°C (21°F). It's a great time to visit San Pedro if you enjoy mild weather with the possibility of cooler days.
In San Pedro in September, the precipitation amount is 37 mm (1.5 in) over a span of 14 days.
In San Pedro in September, humidity is 67%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that wraps around you, making outdoor exploration less comfortable and urging travelers to seek warm, sheltered spots.
In San Pedro in September, the maximum UV index reaches an alarming 17, which falls under the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to stay protected. For more details on the hourly UV index in San Pedro, you can check Hourly UV Index in San Pedro.
UV Risk Categories
Weather in San Pedro varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Pedro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (44°F) | 222 mm (8.8 inches) | 92% | extreme |
| February Weather | 7°C (44°F) | 256 mm (10.1 inches) | 93% | extreme |
| March Weather | 7°C (44°F) | 247 mm (9.7 inches) | 92% | extreme |
| April Weather | 6°C (43°F) | 97 mm (3.8 inches) | 91% | extreme |
| May Weather | 5°C (41°F) | 36 mm (1.4 inches) | 87% | extreme |
| June Weather | 4°C (40°F) | 12 mm (0.5 inches) | 76% | extreme |
| July Weather | 4°C (39°F) | 13 mm (0.5 inches) | 57% | extreme |
| August Weather | 5°C (41°F) | 12 mm (0.5 inches) | 51% | extreme |
| September Weather | 6°C (44°F) | 37 mm (1.5 inches) | 67% | extreme |
| October Weather | 7°C (45°F) | 105 mm (4.1 inches) | 77% | extreme |
| November Weather | 8°C (46°F) | 157 mm (6.2 inches) | 85% | extreme |
| December Weather | 7°C (45°F) | 225 mm (8.8 inches) | 90% | extreme |