August weather forecast
Brownsville, TX

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A wooden footbridge over a large river with beautiful houses and scenic fields on the other end, located near Brownsville in Texas
A wooden footbridge over a large river with beautiful houses and scenic fields on the other end, located near Brownsville in Texas

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

August is the warmest month, exhibiting average temperatures of 93.2°F (34°C) at the peak and 80.8°F (27.1°C) at the base.

Heat index

The heat index value for August is estimated at a life-threatening hot 113°F (45°C). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.
When assessing, remember that heat index measurements are for light winds and shaded spots. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

August is the least humid month in Brownsville, with an average relative humidity of 67%.

Rainfall

In Brownsville, Texas, during August, the rain falls for 9 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, in Brownsville, there are 114 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Daylight

The average length of the day in August in Brownsville 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

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in August transforms into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What is the hottest time of year in Brownsville?

Brownsville experiences its highest temperatures in August, with an average peak of 93.2°F (34°C) and a low of 80.8°F (27.1°C).

How hot is it in Brownsville in August?

The high-temperature, in August, in Brownsville, records 93.2°F (34°C), while the low-temperature is 80.8°F (27.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 113°F (45°C).

What is the least humid month in Brownsville?

The least humid month is August, with an average relative humidity of 67%.

What is the average humidity in August in Brownsville?

The average relative humidity in August is 67%.

How much does it rain in Brownsville in August?

In Brownsville, in August, it is raining for 9 days, with typically 0.75" (19mm) of accumulated precipitation.

What is the average length of the day in August in Brownsville?

In August, the average day length in Brownsville, Texas, is 13h and 1min.

When is the sunrise / sunset in August in Brownsville?

In August, on the first day of the month, sunrise is at 6:56 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:50 pm CDT.

How many hours of sunshine does Brownsville have in August?

In August, the average sunshine duration in Brownsville, Texas, is 10.1h.

What is the UV index reading in August in Brownsville?

In Brownsville, Texas, the average daily maximum UV index in August is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Brownsville, TX

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).

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Average pressure in August
Brownsville, TX

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).

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Average wind speed in August
Brownsville, TX

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).

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Average humidity in August
Brownsville, TX

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%).

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Average rainfall in August
Brownsville, TX

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").

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Average rainfall days in August
Brownsville, TX

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).

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Average daylight in August /
Average sunshine in August
Brownsville, TX

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 1min

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).

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Average sunshine days in August
Brownsville, TX

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).

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Average UV index in August
Brownsville, TX

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).

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Average cloud cover in August
Brownsville, TX

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).

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Average visibility in August
Brownsville, TX

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).

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Brownsville, Texas, USA

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