August weather forecast
Houston, TX

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.