August weather forecastPasadena, TX
August
Weather in August
August keeps alive the brilliant summer spell in Pasadena, bearing a resemblance to the preceding month. Residents continue to enjoy long daylight hours and sunshine, with days stretching slightly longer than July. The sunshine feels hot yet generous, moderated by a slight breeze and a balanced humidity level. Matching July's high temperature at 92.8°F (33.8°C), it marks the last of the extreme summer heat. In September, the heat begins to retreat, ushering in the gentle signs of fall.Temperature
The warmest time of the year is August, with temperatures averaging a high of 92.8°F (33.8°C) and a low of 78.4°F (25.8°C).Heat index
The heat index value for August is estimated at a life-threatening hot 116.6°F (47°C). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The months with the lowest humidity are August and October, with an average relative humidity of 71%.Rainfall
In Pasadena, in August, during 21.3 rainfall days, 5.43" (138mm) of precipitation is typically accumulated. In Pasadena, during the entire year, the rain falls for 190.8 days and collects up to 41.93" (1065mm) of precipitation.Snowfall
In Pasadena, snow does not fall in February through November.Daylight
In Pasadena, the average length of the day in August is 13h and 11min.On the first day of August, sunrise is at 6:40 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 7:43 pm CDT.
Sunshine
In Pasadena, the average sunshine in August is 10.7h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 7 transforms into these recommendations:
Deflect overexposure. Sun protection is a necessity. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Pasadena, TX
- Average high temperature in August: 92.8°F
The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (60.6°F).
- Average low temperature in August: 78.4°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in August
Pasadena, 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
Pasadena, TX
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are August and September (6.5mph).
Average humidity in August
Pasadena, TX
- Average humidity in August: 71%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in August
Pasadena, TX
- Average rainfall in August: 5.43"
The wettest month (with the highest rainfall) is September (5.94").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in August
Pasadena, TX
- Average rainfall days in August: 21.3 days
The months with the highest number of rainy days are August and September (21.3 days).
The month with the least rainy days is January (12.3 days).
Average snowfall in August
Pasadena, TX
- Average snowfall in August: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Pasadena, TX
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Pasadena, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in August
Pasadena, TX
- Average sunshine days in August: 6.9 days
The month with the most sunshine days is January (16.4 days).
The months with the least sunshine days are August and September (6.9 days).
Average UV index in August
Pasadena, TX
- Average UV index in August: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in August
Pasadena, TX
- Average cloud cover in August: 27
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 27).
Average visibility in August
Pasadena, 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).





