August weather forecastPort Isabel, TX
August
Weather in August
August, the last month of the summer in Port Isabel, is also a hot month, with an average temperature ranging between max 88°F (31.1°C) and min 82°F (27.8°C).Temperature
The warmest month is August, with an average high-temperature of 88°F (31.1°C) and an average low-temperature of 82°F (27.8°C).Heat index
The heat index for August is evaluated at a sweltering 102.2°F (39°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In Port Isabel, the average relative humidity in August is 75%.Rainfall
In Port Isabel, in August, it is raining for 12.2 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 143.2 rainfall days, and 21.38" (543mm) of precipitation is accumulated.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 85.1°F (29.5°C).Note: For engaging in water activities including swimming and diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are perceived as perfect, providing pleasure for extended durations.
Daylight
In Port Isabel, the average length of the day in August is 13h and 2min.On the first day of August, sunrise is at 6:55 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in August is 10.3h.UV index
April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in August interprets into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be wary! Reflections from sand and water make UV radiation more intense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Port Isabel, TX
- Average high temperature in August: 88°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (67.1°F).
- Average low temperature in August: 82°F
The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).
Average pressure in August
Port Isabel, 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
Port Isabel, TX
- Average wind speed in August: 11.5mph
The windiest month (with the highest average wind speed) is April (14.2mph).
The calmest month (with the lowest average wind speed) is September (10.9mph).
Average humidity in August
Port Isabel, TX
- Average humidity in August: 75%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Port Isabel, TX
- Average rainfall in August: 1.77"
The wettest month (with the highest rainfall) is September (4.13").
The driest month (with the least rainfall) is April (0.51").
Average rainfall days in August
Port Isabel, TX
- Average rainfall days in August: 12.2 days
The month with the highest number of rainy days is September (19.8 days).
The month with the least rainy days is March (8.2 days).
Average sea temperature in August
Port Isabel, TX
- Average sea temperature in August: 85.1°F
The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (66.7°F).
Average daylight in August /
Average sunshine in August
Port Isabel, 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 30min).
- Average sunshine in August: 10h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in August
Port Isabel, TX
- Average sunshine days in August: 14.4 days
The month with the most sunshine days is March (20.7 days).
The month with the least sunshine days is September (7.2 days).
Average UV index in August
Port Isabel, TX
- Average UV index in August: 7
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in August
Port Isabel, TX
- Average cloud cover in August: 20
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in August
Port Isabel, 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).
