Last updated: August 22, 2025
In San Lorenzo, Argentina, the weather in September features an average temperature of 20°C (68°F), with extremes ranging from a chilly 5°C (42°F) to a scorching 41°C (105°F). You can expect 98 mm (3.9 in) of precipitation over about 9 days, along with an average humidity level of 55%. Be prepared for a variety of conditions as you enjoy your time in this dynamic locale!
In September in San Lorenzo, the average temperature is 20°C (68°F), with maximums reaching up to 41°C (105°F) and minimums dropping as low as 5°C (42°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both warm and cool conditions.
In San Lorenzo in September, the precipitation amount is 98 mm (3.9 in) spread over a duration of 9 days.
In San Lorenzo in September humidity is 55%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it comfortable for traveling but slightly sticky, encouraging leisurely strolls and relaxed outdoor activities.
In San Lorenzo in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Lorenzo.
UV Risk Categories
Weather in San Lorenzo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Lorenzo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 27°C (82°F) | 166 mm (6.5 inches) | 66% | extreme |
| February Weather | 26°C (80°F) | 68 mm (2.7 inches) | 61% | extreme |
| March Weather | 24°C (76°F) | 131 mm (5.2 inches) | 71% | extreme |
| April Weather | 21°C (71°F) | 136 mm (5.4 inches) | 81% | very high |
| May Weather | 18°C (64°F) | 125 mm (4.9 inches) | 84% | high |
| June Weather | 16°C (60°F) | 61 mm (2.4 inches) | 76% | moderate |
| July Weather | 15°C (59°F) | 39 mm (1.5 inches) | 64% | moderate |
| August Weather | 17°C (63°F) | 42 mm (1.7 inches) | 46% | high |
| September Weather | 20°C (68°F) | 98 mm (3.9 inches) | 55% | very high |
| October Weather | 22°C (72°F) | 115 mm (4.5 inches) | 57% | extreme |
| November Weather | 24°C (76°F) | 142 mm (5.6 inches) | 59% | extreme |
| December Weather | 26°C (79°F) | 90 mm (3.5 inches) | 75% | extreme |