August weather forecast
League City, TX

In August, temperatures slightly rise, shifting from 79.7°F (26.5°C) to 90.5°F (32.5°C), although marginally lower than July's high, it still marks August as one of the hottest months. Despite these high temperatures, August records the lowest relative humidity of the year at 73%. A shift in the air pressure and wind direction often signals a change in weather as the city transitions from summer into fall. Towards the end of the month, the first signs of the much-anticipated autumn arrive as cool winds start to offset the heat. Even as temperatures remain high, August starts to hint at the impending shift in seasons.

Temperature

With average temperatures fluctuating between a high of 90.5°F (32.5°C) and a low of 79.7°F (26.5°C), August stands out as the warmest month.

Heat index

During August, the heat index is evaluated at a scorching 109.4°F (43°C). Keep alert: Heat cramps and heat exhaustion are probable. Heatstroke is a potential danger with continued physical activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in August is 73%.

Rainfall

In League City, during August, the rain falls for 15.8 days and regularly aggregates up to 1.3" (33mm) of precipitation. In League City, during the entire year, the rain falls for 122.9 days and collects up to 9.72" (247mm) of precipitation.

Snowfall

February through August, October and November are months without snowfall in League City.

Daylight

In League City, the average length of the day in August is 13h and 10min.
On the first day of the month, sunrise is at 6:40 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:57 am and sunset at 7:43 pm CDT.

Sunshine

The months with the most sunshine are July and August, with an average of 10.7h of sunshine.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in August translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.