nomadseason

August Weather in Houston, United States

Last updated: June 24, 2025

In Houston, United States during August, the average temperature is a warm 27°C (81°F). Expect comfortable conditions with a minimum of 16°C (61°F) and a maximum soaring to 37°C (99°F). However, be prepared for some rain, as 127 mm (5.0 in) of precipitation can fall over 15 days. With an average humidity of 77%, it's the perfect time to enjoy the tropical ambiance!

August Temperature in Houston

In August in Houston, the average temperature is 27°C (81°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 16°C (61°F). This makes Houston an ideal destination for travelers seeking warm weather and pleasant outdoor activities.

August Weather in Houston: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Houston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Houston, August typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (99°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec455057627278818077665249
Data source: Temperature data for Houston generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Houston

In Houston in August, the total precipitation amount is 127 mm (5.0 in) distributed over 15 days.

August Precipitation Trends in Houston

The chart displays monthly precipitation patterns in Houston, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Houston, August typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec1281871631531201311031279211375138
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Houston

In Houston in August, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

August Average Humidity in Houston

This chart illustrates the average monthly humidity levels in Houston, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Houston is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Houston

In Houston in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Houston.

Maximum UV Index Levels in Houston for August

The chart shows the monthly maximum UV Index (UVI) for Houston in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Houston typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109764
Data source: Houston August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Houston Compares to Other Months

Weather in Houston varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Houston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Houston, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)128 mm (5.0 inches)85%moderate
February Weather10°C (50°F)187 mm (7.4 inches)84%high
March Weather14°C (58°F)163 mm (6.4 inches)82%very high
April Weather17°C (63°F)153 mm (6.0 inches)82%very high
May Weather22°C (73°F)120 mm (4.7 inches)82%extreme
June Weather26°C (79°F)131 mm (5.2 inches)79%extreme
July Weather27°C (82°F)103 mm (4.1 inches)82%extreme
August Weather27°C (81°F)127 mm (5.0 inches)77%very high
September Weather25°C (77°F)92 mm (3.6 inches)74%very high
October Weather19°C (66°F)113 mm (4.4 inches)73%high
November Weather11°C (52°F)75 mm (3.0 inches)85%high
December Weather9°C (49°F)138 mm (5.4 inches)88%moderate

Compare Houston's Climate with Cities Worldwide