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September Weather in Rio Primero, Argentina

Last updated: August 22, 2025

In Rio Primero, Argentina, the average temperature in September hovers around 17°C (62°F). Temperatures can range dramatically, dipping to a chilly 2°C (36°F) at times, while soaring to a sweltering 39°C (102°F). Expect a modest precipitation amount of 25 mm (1.0 in) spread over just 5 days, with average humidity levels sitting at a comfortable 53%.

September Temperature in Rio Primero

In September in Rio Primero, the average temperature is 17°C (62°F). Maximums can reach as high as 39°C (102°F) and minimums can drop to as low as 2°C (36°F). It’s advisable to pack for both warm days and cool nights when traveling during this time.

September Weather in Rio Primero: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Primero, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Primero, September typically has an average temperature of 17°C (62°F), with highs reaching up to 39°C (102°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec787571675953525662677377
Data source: Temperature data for Rio Primero 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 Rio Primero

In Rio Primero in September, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

September Precipitation Trends in Rio Primero

The chart displays monthly precipitation patterns in Rio Primero, 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 Rio Primero, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec119837885461413725569990
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rio Primero

In Rio Primero in September, humidity is 53%. With an average temperature of 17°C (62°F), this humidity feels like a mild and comfortable embrace, making it a pleasant experience for traveling, allowing you to explore the sights without feeling overly sticky or overly dry.

September Average Humidity in Rio Primero

This chart illustrates the average monthly humidity levels in Rio Primero, 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 Rio Primero is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec48%54%59%77%82%74%55%48%53%45%53%53%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Primero

In Rio Primero 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 Rio Primero.

Maximum UV Index Levels in Rio Primero for September

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

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

This table compares monthly weather conditions in Rio Primero, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)119 mm (4.7 inches)48%extreme
February Weather24°C (75°F)83 mm (3.3 inches)54%extreme
March Weather22°C (72°F)78 mm (3.1 inches)59%extreme
April Weather19°C (67°F)85 mm (3.3 inches)76%very high
May Weather15°C (59°F)46 mm (1.8 inches)82%high
June Weather12°C (53°F)14 mm (0.5 inches)74%moderate
July Weather11°C (52°F)13 mm (0.5 inches)55%moderate
August Weather13°C (57°F)7 mm (0.3 inches)48%high
September Weather17°C (62°F)25 mm (1.0 inches)53%very high
October Weather20°C (68°F)56 mm (2.2 inches)45%extreme
November Weather23°C (73°F)99 mm (3.9 inches)53%extreme
December Weather25°C (77°F)90 mm (3.5 inches)53%extreme

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