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September Weather in Tres Arroyos, Argentina

Last updated: August 22, 2025

In September, the average temperature in Tres Arroyos, Argentina is a pleasant 11°C (52°F). Expect temperatures to range from a brisk -2°C (28°F) at night to a warm 29°C (84°F) during the day. With an average precipitation of 52 mm (2.1 in) spread over 7 days, and humidity levels around 71%, it's a month that perfectly balances cool breezes and sunny afternoons.

September Temperature in Tres Arroyos

In September in Tres Arroyos, the average temperature is 11°C (52°F). Maximum can reach 29°C (84°F) and minimum can be as low as -2°C (28°F). This variability makes it important for travelers to pack layers to accommodate both warm and chilly conditions.

September Weather in Tres Arroyos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tres Arroyos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tres Arroyos, September typically has an average temperature of 11°C (52°F), with highs reaching up to 29°C (84°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec726965605247454952566368
Data source: Temperature data for Tres Arroyos 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 Tres Arroyos

In Tres Arroyos in September, the precipitation amount is 52 mm (2.1 in) over the course of 7 days.

September Precipitation Trends in Tres Arroyos

The chart displays monthly precipitation patterns in Tres Arroyos, 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 Tres Arroyos, September typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec708265824644433352688589
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tres Arroyos

In Tres Arroyos in September, humidity is 71%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your clothes, making outdoor exploration less enjoyable and encouraging frequent breaks in cozy cafes or sheltered spots.

September Average Humidity in Tres Arroyos

This chart illustrates the average monthly humidity levels in Tres Arroyos, 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 Tres Arroyos is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec61%67%70%75%77%74%71%68%71%68%65%58%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tres Arroyos

In Tres Arroyos in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Tres Arroyos.

Maximum UV Index Levels in Tres Arroyos for September

The chart shows the monthly maximum UV Index (UVI) for Tres Arroyos 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 Tres Arroyos typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141210743357101214
Data source: Tres Arroyos 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 Tres Arroyos Compares to Other Months

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

This table compares monthly weather conditions in Tres Arroyos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)70 mm (2.8 inches)61%extreme
February Weather21°C (69°F)82 mm (3.2 inches)67%extreme
March Weather19°C (66°F)65 mm (2.6 inches)70%very high
April Weather15°C (60°F)82 mm (3.2 inches)75%high
May Weather11°C (52°F)46 mm (1.8 inches)77%moderate
June Weather9°C (48°F)44 mm (1.7 inches)74%moderate
July Weather7°C (46°F)43 mm (1.7 inches)71%moderate
August Weather9°C (49°F)33 mm (1.3 inches)68%moderate
September Weather11°C (52°F)52 mm (2.1 inches)71%high
October Weather14°C (57°F)67 mm (2.7 inches)68%very high
November Weather17°C (63°F)85 mm (3.4 inches)65%extreme
December Weather20°C (69°F)89 mm (3.5 inches)58%extreme

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