Houston weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: October – April
What is the weather like in Houston in August?
In August, Houston is very hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 14 rainy days and 104 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Houston.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 39 | 34 | 51 |
| Day | 33° | 33° | 31° |
| Night | 25° | 25° | 22° |
| Sun | 8 h | 8 h | 6 h |
| Rain days | 14 | 14 | 12 |
More details for August
- Daylight
- 13 h 15 min06:49 – 20:04
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 28 days30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 50 %20 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 30 %30 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Houston in August: quick answers
Is Houston hot in August?
Yes. In August, Houston is very hot: daytime highs average 33 °C and nights stay around 25 °C. On about 28 days the thermometer climbs to 30 °C or more.
Does it rain much in Houston in August?
Rain is frequent, with about 14 rainy days and 104 mm in total.
Houston month by month
The whole year in HoustonAll destinations: USAWhere to go in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences