August weather forecastBrownsville, TX

August
Weather in August
August in Brownsville exhibits all the characteristics of a hot summer month, with an average high temperature soaring up to 93.2°F (34°C). The city witnesses almost 13 hours of daylight, ensuring that the summertime festivities continue in full swing. With a relative humidity of 67%, the lowest in the year, residents get a respite from the previous month's weighty moisture content. The decrease in wind speed aligns with the drop in gust speed. However, the month stands out with the lowest rainfall of 0.75" (19mm), showing a surprising break from the trend set by the summer season.Temperature
In Brownsville, the highest average temperatures are observed in August, with a high of 93.2°F (34°C) and a low of 80.8°F (27.1°C).Heat index
August's mean heat index is evaluated at a blazing hot 113°F (45°C). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.Understanding the heat index involves considering values for shaded locales with light wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
With an average relative humidity of 67%, August is the least humid month.Rainfall
In August, the rain falls for 9 days. Throughout August, 0.75" (19mm) of precipitation is accumulated. In Brownsville, during the entire year, the rain falls for 114 days and collects up to 11.22" (285mm) of precipitation.Daylight
The average length of the day in August is 13h and 1min.On the first day of the month, sunrise is at 6:56 am and sunset at 8:16 pm. On the last day of August, in Brownsville, sunrise is at 7:10 am and sunset at 7:50 pm CDT.
Sunshine
In Brownsville, the average sunshine in August is 10.1h.UV index
In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 7 during August translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Brownsville, TX
- Average high temperature in August: 93.2°F
The warmest month (with the highest average high temperature) is August (93.2°F).
The month with the lowest average high temperature is January (68.9°F).
- Average low temperature in August: 80.8°F
The month with the highest average low temperature is August (80.8°F).
The coldest month (with the lowest average low temperature) is January (57°F).
Average pressure in August
Brownsville, TX
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in August
Brownsville, TX
- Average wind speed in August: 10.6mph
The windiest months (with the highest average wind speed) are March and April (12.8mph).
The calmest month (with the lowest average wind speed) is September (9.3mph).
Average humidity in August
Brownsville, TX
- Average humidity in August: 67%
The months with the highest relative humidity are February, May and December (74%).
The month with the lowest relative humidity is August (67%).
Average rainfall in August
Brownsville, TX
- Average rainfall in August: 0.75"
The wettest month (with the highest rainfall) is September (1.81").
The driest months (with the least rainfall) are February and April (0.39").
Average rainfall days in August
Brownsville, TX
- Average rainfall days in August: 9 days
The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is February (6.9 days).
Average daylight in August /
Average sunshine in August
Brownsville, TX
- Average daylight in August: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in August: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in August
Brownsville, TX
- Average sunshine days in August: 18.6 days
The month with the most sunshine days is March (21.1 days).
The month with the least sunshine days is September (12.8 days).
Average UV index in August
Brownsville, TX
- Average UV index in August: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in August
Brownsville, TX
- Average cloud cover in August: 21
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in August
Brownsville, TX
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





