nomadseason

September Weather in Portena, Argentina

Last updated: August 22, 2025

In September, the average temperature in Portena, Argentina is a delightful 17°C (63°F). You'll experience a range from a chilly 3°C (37°F) to a warm 38°C (101°F). Expect about 32 mm (1.3 in) of rain spread over 4 days, while the air remains comfortably humid at an average of 59%. Whether you're exploring the outdoors or enjoying a cozy indoor retreat, Portena offers a variety of experiences this month!

September Temperature in Portena

In September in Portena, the average temperature is 17°C (63°F). Maximums can reach 38°C (101°F), and minimums can drop as low as 3°C (37°F). This diverse climate makes Portena an exciting destination for travelers seeking both warm days and cool nights.

September Weather in Portena: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Portena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portena, September typically has an average temperature of 17°C (63°F), with highs reaching up to 38°C (101°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec787572676055535863687377
Data source: Temperature data for Portena generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Portena

In Portena in September, the total precipitation amount is 32 mm (1.3 in), accumulated over a period of 4 days.

September Precipitation Trends in Portena

The chart displays monthly precipitation patterns in Portena, 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 Portena, September typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec1169394110532022213391105102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Portena

In Portena in September, humidity is 59%. With an average temperature of 17°C (63°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as long as you're prepared for occasional mugginess.

September Average Humidity in Portena

This chart illustrates the average monthly humidity levels in Portena, 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 Portena is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%57%65%76%83%78%58%54%59%50%53%57%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Portena

In Portena in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Portena.

Maximum UV Index Levels in Portena for September

The chart shows the monthly maximum UV Index (UVI) for Portena 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 Portena typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312964579121414
Data source: Portena 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 Portena Compares to Other Months

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

This table compares monthly weather conditions in Portena, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)116 mm (4.6 inches)51%extreme
February Weather24°C (75°F)93 mm (3.7 inches)57%extreme
March Weather22°C (72°F)94 mm (3.7 inches)65%extreme
April Weather19°C (67°F)109 mm (4.3 inches)76%very high
May Weather15°C (60°F)53 mm (2.1 inches)83%high
June Weather13°C (55°F)20 mm (0.8 inches)78%moderate
July Weather12°C (54°F)21 mm (0.8 inches)58%moderate
August Weather14°C (58°F)21 mm (0.8 inches)54%high
September Weather17°C (63°F)32 mm (1.3 inches)59%very high
October Weather20°C (68°F)91 mm (3.6 inches)50%extreme
November Weather23°C (73°F)105 mm (4.1 inches)53%extreme
December Weather25°C (77°F)102 mm (4.0 inches)57%extreme

Compare Portena's Climate with Cities Worldwide