nomadseason

August Weather in Las Vegas, United States

Last updated: June 24, 2025

In August, the average temperature in Las Vegas, United States is a pleasant 20°C (69°F). Expect lows of around 9°C (48°F) and highs reaching 34°C (93°F). Rainfall is typical during this time, with about 80 mm (3.1 in) of precipitation spread over 13 days. The average humidity sits at a comfortable 65%, making it an ideal season for both indoor and outdoor activities.

August Temperature in Las Vegas

In August in Las Vegas, the average temperature is 20°C (69°F), with maximums reaching 34°C (93°F) and minimums dipping as low as 9°C (48°F). This makes it a great time to visit, as you can enjoy warm days while still experiencing cooler evenings.

August Weather in Las Vegas: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Las Vegas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Vegas, August typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec323543505968716864514335
Data source: Temperature data for Las Vegas 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 Las Vegas

In Las Vegas in August, the precipitation amount is 80 mm (3.1 in) spread over the course of 13 days.

August Precipitation Trends in Las Vegas

The chart displays monthly precipitation patterns in Las Vegas, 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 Las Vegas, August typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec262033354141648039551918
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Las Vegas

In Las Vegas in August, humidity is 65%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, creating a sticky atmosphere that can be quite oppressive for traveling, making every step feel heavier and the air thick with moisture.

August Average Humidity in Las Vegas

This chart illustrates the average monthly humidity levels in Las Vegas, 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 Las Vegas is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Las Vegas

In Las Vegas in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Las Vegas.

Maximum UV Index Levels in Las Vegas for August

The chart shows the monthly maximum UV Index (UVI) for Las Vegas 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 Las Vegas typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211854
Data source: Las Vegas 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 Las Vegas Compares to Other Months

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

This table compares monthly weather conditions in Las Vegas, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)26 mm (1.0 inches)78%moderate
February Weather1°C (35°F)20 mm (0.8 inches)79%high
March Weather6°C (43°F)33 mm (1.3 inches)66%very high
April Weather10°C (50°F)35 mm (1.4 inches)60%extreme
May Weather15°C (59°F)41 mm (1.6 inches)57%extreme
June Weather20°C (69°F)41 mm (1.6 inches)55%extreme
July Weather21°C (71°F)64 mm (2.5 inches)56%extreme
August Weather20°C (69°F)80 mm (3.1 inches)65%extreme
September Weather18°C (64°F)39 mm (1.6 inches)72%extreme
October Weather11°C (51°F)55 mm (2.2 inches)78%very high
November Weather6°C (43°F)19 mm (0.8 inches)81%moderate
December Weather2°C (35°F)18 mm (0.7 inches)79%moderate

Compare Las Vegas's Climate with Cities Worldwide