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August Weather in Brownsville, United States

Last updated: June 24, 2025

In August, the average temperature in Brownsville, United States hovers around 21°C (71°F), but be prepared for a range: it can dip to a cool 7°C (46°F) or soar up to a sizzling 40°C (104°F). Expect a minimal precipitation of about 5 mm (0.2 in), likely falling over just 1 day, and enjoy the moderate average humidity of 74%.

August Temperature in Brownsville

In August in Brownsville, the average temperature is 21°C (71°F). The maximum can reach 40°C (104°F), while the minimum can drop as low as 7°C (46°F). This diverse temperature range makes Brownsville an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates August temperature patterns in Brownsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brownsville, August typically has an average temperature of 21°C (71°F), with highs reaching up to 40°C (104°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec424146515764707064534641
Data source: Temperature data for Brownsville 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 Brownsville

In Brownsville in August, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

August Precipitation Trends in Brownsville

The chart displays monthly precipitation patterns in Brownsville, 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 Brownsville, August typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec1441811251135738256288130182
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Brownsville

In Brownsville in August, humidity is 74%. With an average temperature of 21°C (71°F), this humidity feels like traveling through a warm, damp blanket, making outdoor excursions feel sticky and a bit stifling, often prompting the need for frequent breaks to stay refreshed.

August Average Humidity in Brownsville

This chart illustrates the average monthly humidity levels in Brownsville, 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 Brownsville is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Brownsville

In Brownsville in August, 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 Brownsville.

Maximum UV Index Levels in Brownsville for August

The chart shows the monthly maximum UV Index (UVI) for Brownsville 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 Brownsville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Brownsville 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 Brownsville Compares to Other Months

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

This table compares monthly weather conditions in Brownsville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)144 mm (5.7 inches)85%low
February Weather5°C (42°F)181 mm (7.1 inches)84%moderate
March Weather8°C (46°F)125 mm (4.9 inches)85%high
April Weather10°C (51°F)113 mm (4.4 inches)83%high
May Weather14°C (57°F)57 mm (2.3 inches)83%very high
June Weather18°C (64°F)38 mm (1.5 inches)83%very high
July Weather21°C (70°F)2 mm (0.1 inches)82%very high
August Weather21°C (71°F)5 mm (0.2 inches)74%very high
September Weather18°C (64°F)62 mm (2.5 inches)71%very high
October Weather12°C (54°F)88 mm (3.5 inches)81%moderate
November Weather8°C (47°F)130 mm (5.1 inches)87%moderate
December Weather5°C (42°F)182 mm (7.2 inches)87%low

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