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August Weather in Rosario, Mexico

Last updated: August 27, 2025

In August, the average temperature in Rosario, Mexico hovers around 28°C (82°F). With minimums dipping to 20°C (68°F) and maximums soaring to 40°C (104°F), the climate can be quite varied. Expect about 124 mm (4.9 in) of precipitation spread over 16 days, contributing to a notably high humidity of 81%. Stay prepared for a mix of sun and rain!

August Temperature in Rosario

In August in Rosario, the average temperature is 28°C (82°F). The maximum can reach 40°C (104°F), and the minimum can be as low as 20°C (68°F). Be prepared for warm weather and pack accordingly for both the heat and cooler evenings while traveling.

August Weather in Rosario: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosario, August typically has an average temperature of 28°C (82°F), with highs reaching up to 40°C (104°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec616368758086828280787062
Data source: Temperature data for Rosario 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.

August Precipitation in Rosario

In Rosario in August, the precipitation amount is 124 mm (4.9 in) occurring over a period of 16 days.

August Precipitation Trends in Rosario

The chart displays monthly precipitation patterns in Rosario, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Rosario, August typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec272318113313512492254233
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rosario

In Rosario in August, humidity is 81%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket wrapped around you, making traveling somewhat uncomfortable as the air thickens, leaving you longing for a refreshing breeze.

August Average Humidity in Rosario

This chart illustrates the average monthly humidity levels in Rosario, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Rosario is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rosario

In Rosario in August, 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.

Maximum UV Index Levels in Rosario for August

The chart shows the monthly maximum UV Index (UVI) for Rosario in August, 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 August, the maximum UV index in Rosario typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121211975
Data source: Rosario August 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 August Weather in Rosario Compares to Other Months

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

This table compares monthly weather conditions in Rosario, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)27 mm (1.1 inches)74%high
February Weather17°C (63°F)23 mm (0.9 inches)67%very high
March Weather20°C (68°F)18 mm (0.7 inches)60%very high
April Weather24°C (75°F)1 mm (0.0 inches)51%extreme
May Weather27°C (80°F)1 mm (0.0 inches)47%extreme
June Weather30°C (86°F)33 mm (1.3 inches)50%extreme
July Weather28°C (83°F)135 mm (5.3 inches)70%extreme
August Weather28°C (82°F)124 mm (4.9 inches)81%extreme
September Weather27°C (81°F)92 mm (3.6 inches)82%extreme
October Weather25°C (78°F)25 mm (1.0 inches)78%very high
November Weather21°C (70°F)41 mm (1.6 inches)78%high
December Weather17°C (62°F)33 mm (1.3 inches)80%moderate

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