Las Vegas
Nevada, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and Climate
Las Vegas, NV

A night aerial view of the Las Vegas strip in Nevada, USA
A night aerial view of the Las Vegas strip in Nevada, USA
August is another hot summer month with average high temperatures around 102°F (38.9°C) offering little respite from the sweltering heat. The sun is merciless with the ultraviolet index at an extreme 11 as the daily sunshine stretches to 12 hours. The heat feels higher due to the lack of humidity in the desert.
August is a time to spend indoors - buy a souvenir in a gift shop or explore the malls in the city center with ample food, drink and a range of activities for kids.
  • The average high temperature in August: 38.9°C

The warmest month (with the highest average high temperature) is July (40.1°C).
The month with the lowest average high temperature is December (13.7°C).

  • The average low temperature in August: 26.3°C

The month with the highest average low temperature is July (27.2°C).
The coldest month (with the lowest average low temperature) is December (3.7°C).

  • The average humidity in August: 25.6%

The month with the highest relative humidity is January (45.1%).
The month with the lowest relative humidity is June (16.5%).

  • The average rainfall in August: 8.4mm

The wettest month (with the highest rainfall) is February (19.3mm).
The driest month (with the lowest rainfall) is June (1.8mm).

  • The average rainfall days in August: 2.6 days

The month with the highest number of rainy days is February (4 days).
The month with the lowest number of rainy days is June (0.6 days).

  • The average daylight in August: 13h

The month with the longest days is June (Average daylight: 15h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in August: 11.9h

The month with most sunshine is June (Average sunshine: 13.4h).
The month with least sunshine is December (Average sunshine: 7.6h).

  • The average UV index in August: 10

The month with the highest UV index is July (UV index 11).
The month with the lowest UV index is December (UV index 2).

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