August weather forecastHouston, TX
August
Weather in August
Following the peak of summer in July, August sees a continued prevalence of the sweltering heat in Houston. Nonetheless, Houston's citizens and visitors continue to enjoy the outdoors, albeit in a slightly shorter and more relaxed fashion. As August progresses, the heat begins to taper off hinting towards the end of the summer months. However, Houston continues to bask in the sunlight with the temperature soaring to a high of 94.3°F (34.6°C). The month of August offers the residents of Houston a final chance to make the most of the summer season before cooler weather starts setting in.Temperature
In Houston, August is identified by the highest average temperatures, reaching a peak of 94.3°F (34.6°C) and a low of 77.5°F (25.3°C).Heat index
In August, the heat index is evaluated at a life-threatening hot 120.2°F (49°C). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
August and October, with an average relative humidity of 70%, are the least humid months.Rainfall
In August, in Houston, the rain falls for 19.1 days. Throughout August, 3.9" (99mm) of precipitation is accumulated. Throughout the year, there are 180.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall.Daylight
In Houston, the average length of the day in August is 13h and 11min.On the first day of August, sunrise is at 6:41 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 7:44 pm CDT.
Sunshine
August has the most sunshine of the year, with an average of 10.5h of sunshine.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index in Houston, Texas. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 7 during August leads to these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Houston, TX
- Average high temperature in August: 94.3°F
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in August: 77.5°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in August
Houston, TX
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Houston, TX
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in August
Houston, TX
- Average humidity in August: 70%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are August and October (70%).
Average rainfall in August
Houston, TX
- Average rainfall in August: 3.9"
The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in August
Houston, TX
- Average rainfall days in August: 19.1 days
The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is January (11.8 days).
Average snowfall in August
Houston, TX
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Houston, TX
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Houston, TX
- Average daylight in August: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in August: 10h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in August
Houston, TX
- Average sunshine days in August: 9.6 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.9 days).
Average UV index in August
Houston, TX
- Average UV index in August: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
Houston, TX
- Average cloud cover in August: 27
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
Houston, 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).
