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August Weather in Dallas, United States

Last updated: June 24, 2025

In Dallas, United States, the average temperature in August hovers around 25°C (78°F). Expect a comfortable range, with minimums dipping to 16°C (61°F) and maximums soaring to 35°C (95°F). However, prepare for a bit of moisture, as precipitation averages 144 mm (5.7 in) over approximately 16 days in the month. The average humidity is a notable 81%, making the air feel quite rich and tropical.

August Temperature in Dallas

In August in Dallas, the average temperature is 25°C (78°F). Maximums can reach 35°C (95°F) and minimums can be as low as 16°C (61°F). This makes Dallas an ideal destination for travelers seeking warm weather and pleasant conditions.

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

The chart illustrates August temperature patterns in Dallas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dallas, August typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (95°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec455056627176797874655248
Data source: Temperature data for Dallas generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Dallas

In Dallas in August, the total precipitation amount is 144 mm (5.7 in), which occurs over a span of 16 days.

August Precipitation Trends in Dallas

The chart displays monthly precipitation patterns in Dallas, 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 Dallas, August typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec11115913813410613412314411213186137
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Dallas

In Dallas in August humidity is 81%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities less comfortable and requiring frequent breaks to stay hydrated.

August Average Humidity in Dallas

This chart illustrates the average monthly humidity levels in Dallas, 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 Dallas is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Dallas

In Dallas 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 Dallas.

Maximum UV Index Levels in Dallas for August

The chart shows the monthly maximum UV Index (UVI) for Dallas 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 Dallas typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Dallas 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 Dallas Compares to Other Months

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

This table compares monthly weather conditions in Dallas, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)111 mm (4.4 inches)86%moderate
February Weather10°C (51°F)159 mm (6.3 inches)84%high
March Weather13°C (56°F)138 mm (5.4 inches)83%very high
April Weather16°C (62°F)134 mm (5.3 inches)81%very high
May Weather21°C (71°F)106 mm (4.2 inches)81%extreme
June Weather24°C (76°F)133 mm (5.3 inches)81%extreme
July Weather26°C (79°F)123 mm (4.9 inches)83%extreme
August Weather25°C (78°F)144 mm (5.7 inches)81%very high
September Weather23°C (74°F)112 mm (4.4 inches)82%very high
October Weather18°C (65°F)131 mm (5.1 inches)78%very high
November Weather11°C (52°F)86 mm (3.4 inches)86%high
December Weather9°C (48°F)137 mm (5.4 inches)89%moderate

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