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September Weather in San Pedro, Argentina

Last updated: August 22, 2025

In San Pedro, Argentina, the average temperature in September hovers around 15°C (59°F), making it a comfortable time to visit. However, be prepared for temperature fluctuations, with a minimum of -1°C (30°F) and a maximum reaching up to 32°C (90°F). Rainfall is not uncommon, with an average precipitation of 71 mm (2.8 in) spread over about 5 days. The average humidity also sits at a moderate 70%, creating a refreshing atmosphere perfect for exploring.

September Temperature in San Pedro

In September in San Pedro, the average temperature is 15°C (59°F), with maximums reaching 32°C (90°F) and minimums dropping as low as -1°C (30°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

September Weather in San Pedro: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Pedro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Pedro, September typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec777470655853515459637074
Data source: Temperature data for San Pedro generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Pedro

In San Pedro in September, the precipitation amount is 71 mm (2.8 in) over the course of 5 days.

September Precipitation Trends in San Pedro

The chart displays monthly precipitation patterns in San Pedro, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In San Pedro, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec72841011147532434671897477
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Pedro

In San Pedro in September, humidity is 70%. With an average temperature of 15°C (59°F), this humidity feels like a warm embrace, making it slightly uncomfortable while traveling, as the moist air clings to your skin and can leave you feeling slightly lethargic.

September Average Humidity in San Pedro

This chart illustrates the average monthly humidity levels in San Pedro, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in San Pedro is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec54%61%69%79%85%82%69%65%70%63%61%63%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Pedro

In San Pedro 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 San Pedro.

Maximum UV Index Levels in San Pedro for September

The chart shows the monthly maximum UV Index (UVI) for San Pedro in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in San Pedro typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111314
Data source: San Pedro September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in San Pedro Compares to Other Months

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.

This table compares monthly weather conditions in San Pedro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)72 mm (2.8 inches)54%extreme
February Weather23°C (75°F)84 mm (3.3 inches)61%extreme
March Weather21°C (71°F)101 mm (4.0 inches)69%extreme
April Weather19°C (66°F)114 mm (4.5 inches)79%very high
May Weather14°C (58°F)75 mm (3.0 inches)85%moderate
June Weather12°C (53°F)32 mm (1.3 inches)82%moderate
July Weather11°C (51°F)43 mm (1.7 inches)69%moderate
August Weather12°C (54°F)46 mm (1.8 inches)65%high
September Weather15°C (59°F)71 mm (2.8 inches)70%very high
October Weather17°C (64°F)89 mm (3.5 inches)63%extreme
November Weather21°C (70°F)74 mm (2.9 inches)60%extreme
December Weather24°C (75°F)77 mm (3.0 inches)63%extreme

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