Last updated: August 27, 2025
In September, the average temperature in San Antonio, Peru is a warm 26°C (79°F). Expect minimums of 18°C (64°F) and maximums soaring up to 37°C (98°F). With an average precipitation of 66 mm (2.6 in) over 10 days, and a comfortable humidity level of 42%, it's the perfect opportunity to enjoy the vibrant atmosphere of the region!
In September in San Antonio, the average temperature is 26°C (79°F), with maximums reaching up to 37°C (98°F) and minimums dipping as low as 18°C (64°F). This climate makes San Antonio an ideal destination for travelers seeking warm weather and outdoor adventures.
In San Antonio in September, the precipitation amount is 66 mm (2.6 in) over the course of 10 days.
In San Antonio in September, humidity is 42%. With an average temperature of 26°C (79°F), this humidity feels like a comfortable embrace, making it ideal for exploring the sights and sounds of the area without feeling too sticky or uncomfortable.
In San Antonio in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Antonio, you can check here.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 25°C (78°F) | 181 mm (7.1 inches) | 80% | extreme |
February Weather | 25°C (78°F) | 171 mm (6.7 inches) | 76% | extreme |
March Weather | 25°C (77°F) | 290 mm (11.4 inches) | 81% | extreme |
April Weather | 25°C (77°F) | 235 mm (9.3 inches) | 86% | extreme |
May Weather | 24°C (76°F) | 203 mm (8.0 inches) | 86% | extreme |
June Weather | 24°C (76°F) | 121 mm (4.8 inches) | 70% | extreme |
July Weather | 24°C (75°F) | 68 mm (2.7 inches) | 47% | extreme |
August Weather | 25°C (77°F) | 60 mm (2.4 inches) | 37% | extreme |
September Weather | 26°C (79°F) | 66 mm (2.6 inches) | 42% | extreme |
October Weather | 26°C (78°F) | 141 mm (5.6 inches) | 62% | extreme |
November Weather | 26°C (78°F) | 206 mm (8.1 inches) | 76% | extreme |
December Weather | 25°C (78°F) | 154 mm (6.1 inches) | 89% | extreme |