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

August, with average temperatures reaching a high of 94.3°F (34.6°C) and a low of 77.5°F (25.3°C), is the warmest month.

Heat index

In August, the average heat index is estimated at a burning hot 120.2°F (49°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

August and October, with an average relative humidity of 70%, are the least humid months in Houston.

Rainfall

In Houston, in August, it is raining for 19.1 days, with typically 3.9" (99mm) of accumulated precipitation. In Houston, during the entire year, the rain falls for 180.5 days and collects up to 35.35" (898mm) of precipitation.

Snowfall

In Houston, snow does not fall in February through November.

Daylight

In August, the average length of the day is 13h and 11min.
On the first day of the month, sunrise is at 6:41 am and sunset at 8:14 pm. On the last day of August, in Houston, 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

The months with the highest UV index in Houston are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 7 translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.