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September Weather in Rosario Oeste, Brazil

Last updated: August 22, 2025

In September, the average temperature in Rosario Oeste, Brazil hovers around 29°C (84°F), making it a warm destination. Expect a minimum temperature of 13°C (56°F) and a maximum that can soar up to 40°C (105°F). With a precipitation amount of 25 mm (1.0 in) spread over just 4 days, the month remains relatively dry. Additionally, the average humidity is comfortably low at 30%, ensuring a pleasant atmosphere throughout.

September Temperature in Rosario Oeste

In September in Rosario Oeste, the average temperature is 29°C (84°F), with maximums potentially reaching 40°C (105°F) and minimums dropping as low as 13°C (56°F). Be prepared for warm days and cooler evenings when traveling during this month.

September Weather in Rosario Oeste: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rosario Oeste, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosario Oeste, September typically has an average temperature of 29°C (84°F), with highs reaching up to 40°C (105°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec807980797775747984838180
Data source: Temperature data for Rosario Oeste 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 Rosario Oeste

In Rosario Oeste in September, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.

September Precipitation Trends in Rosario Oeste

The chart displays monthly precipitation patterns in Rosario Oeste, 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 Rosario Oeste, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec15024919591272082691172194
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rosario Oeste

In Rosario Oeste in September, humidity is 30%. With an average temperature of 29°C (84°F), this humidity feels like a warm embrace, creating a comfortable atmosphere for traveling that is both refreshing and invigorating as you explore the surroundings.

September Average Humidity in Rosario Oeste

This chart illustrates the average monthly humidity levels in Rosario Oeste, 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 Rosario Oeste is approximately 30%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%89%87%78%63%50%39%30%29%63%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rosario Oeste

In Rosario Oeste in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Rosario Oeste.

Maximum UV Index Levels in Rosario Oeste for September

The chart shows the monthly maximum UV Index (UVI) for Rosario Oeste 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 Rosario Oeste typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1616151310991112141516
Data source: Rosario Oeste 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 Rosario Oeste Compares to Other Months

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

This table compares monthly weather conditions in Rosario Oeste, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)150 mm (5.9 inches)88%extreme
February Weather26°C (80°F)249 mm (9.8 inches)88%extreme
March Weather27°C (80°F)195 mm (7.7 inches)89%extreme
April Weather26°C (80°F)91 mm (3.6 inches)87%extreme
May Weather25°C (77°F)27 mm (1.0 inches)78%very high
June Weather24°C (76°F)2 mm (0.1 inches)63%very high
July Weather24°C (75°F)0 mm (0.0 inches)50%very high
August Weather26°C (79°F)8 mm (0.3 inches)39%extreme
September Weather29°C (84°F)25 mm (1.0 inches)30%extreme
October Weather28°C (83°F)91 mm (3.6 inches)29%extreme
November Weather27°C (81°F)172 mm (6.8 inches)62%extreme
December Weather27°C (80°F)194 mm (7.6 inches)84%extreme

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