Last updated: June 24, 2025
In September, the average temperature in Peru, United States hovers around 16°C (62°F). While the mercury can dip to a chilly 0°C (32°F), it can also rise to a warm 30°C (87°F). Expect about 127 mm (5.0 in) of precipitation spread over 9 days, accompanied by an average humidity of 72%. Prepare accordingly for a blend of mild temperatures and occasional rain!
In September, in Peru, the average temperature is 16°C (62°F). Maximums can reach 30°C (87°F), while minimums can dip as low as 0°C (32°F). Be prepared for a wide range of temperatures when traveling during this time.
In Peru in September, the precipitation amount is 127 mm (5.0 in) over a span of 9 days.
In Peru in September, humidity is 72%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapped around you, making it slightly uncomfortable for traveling as you might find yourself sweating more than usual, especially during outdoor activities.
In Peru 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 Peru.
UV Risk Categories
Weather in Peru varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Peru, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -5°C (24°F) | 89 mm (3.5 inches) | 89% | moderate |
February Weather | -3°C (27°F) | 111 mm (4.4 inches) | 88% | moderate |
March Weather | 0°C (33°F) | 93 mm (3.7 inches) | 86% | high |
April Weather | 7°C (44°F) | 158 mm (6.2 inches) | 84% | very high |
May Weather | 13°C (56°F) | 123 mm (4.8 inches) | 76% | very high |
June Weather | 18°C (65°F) | 108 mm (4.3 inches) | 72% | very high |
July Weather | 21°C (71°F) | 193 mm (7.6 inches) | 66% | very high |
August Weather | 20°C (69°F) | 144 mm (5.7 inches) | 64% | very high |
September Weather | 16°C (62°F) | 127 mm (5.0 inches) | 72% | very high |
October Weather | 11°C (51°F) | 179 mm (7.0 inches) | 81% | high |
November Weather | 3°C (37°F) | 113 mm (4.4 inches) | 87% | moderate |
December Weather | -2°C (28°F) | 132 mm (5.2 inches) | 84% | low |