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September Weather in Arroyo Seco, Argentina

Last updated: August 22, 2025

In September, the average temperature in Arroyo Seco, Argentina hovers around 15°C (60°F). However, temperatures can range from a chilly -1°C (30°F) to a warm 33°C (91°F). Expect some rain during your stay, with 66 mm (2.6 in) of precipitation spread over 6 days. The average humidity is about 62%, so be prepared for a potentially brisk but comfortable climate!

September Temperature in Arroyo Seco

In September in Arroyo Seco, the average temperature is 15°C (60°F), with maximums reaching 33°C (91°F) and minimums dipping as low as -1°C (30°F). This wide temperature range suggests that travelers should pack a variety of clothing to stay comfortable during their visit.

September Weather in Arroyo Seco: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Arroyo Seco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroyo Seco, September typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec777571665853515560647175
Data source: Temperature data for Arroyo Seco 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 Arroyo Seco

In Arroyo Seco in September, the precipitation amount is 66 mm (2.6 in) over the course of 6 days.

September Precipitation Trends in Arroyo Seco

The chart displays monthly precipitation patterns in Arroyo Seco, 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 Arroyo Seco, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec10874911277028303766677473
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Arroyo Seco

In Arroyo Seco in September, humidity is 62%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace, making it a bit muggy for traveling, yet pleasantly refreshing for leisurely strolls and outdoor exploration.

September Average Humidity in Arroyo Seco

This chart illustrates the average monthly humidity levels in Arroyo Seco, 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 Arroyo Seco is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec48%55%64%76%82%77%62%59%62%52%56%51%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arroyo Seco

In Arroyo Seco 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 Arroyo Seco.

Maximum UV Index Levels in Arroyo Seco for September

The chart shows the monthly maximum UV Index (UVI) for Arroyo Seco 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 Arroyo Seco typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111314
Data source: Arroyo Seco 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 Arroyo Seco Compares to Other Months

Weather in Arroyo Seco varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Arroyo Seco, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Arroyo Seco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)108 mm (4.3 inches)48%extreme
February Weather24°C (75°F)74 mm (2.9 inches)55%extreme
March Weather21°C (71°F)91 mm (3.6 inches)64%extreme
April Weather19°C (66°F)127 mm (5.0 inches)76%very high
May Weather14°C (58°F)70 mm (2.8 inches)82%moderate
June Weather12°C (53°F)28 mm (1.1 inches)77%moderate
July Weather11°C (52°F)30 mm (1.2 inches)62%moderate
August Weather13°C (55°F)37 mm (1.5 inches)59%high
September Weather15°C (60°F)66 mm (2.6 inches)62%very high
October Weather18°C (64°F)67 mm (2.6 inches)52%extreme
November Weather22°C (71°F)74 mm (2.9 inches)56%extreme
December Weather24°C (75°F)73 mm (2.9 inches)51%extreme

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