Very hot in Aug
41°C average high
avg high · 28° at night
25°C+ on almost every day · often 35°C+
Nevada, USA
Las Vegas weather in August
Is it warm? Yes. August in Las Vegas is very hot: afternoons average 40°C and nights 27°C. Most days (80%) peak between 36°C and 43°C.
Very hot · average high
40°C
25°C or more on almost every day. 35°C or more on nine in ten days or more.
- Average low27°overnight
- Sea—inland
- Rainy days211 mm in the month
- SkyMostly clear24% cloud · 69% clear days
How warm it really gets
Every August afternoon from 2011–2025: 465 days. Most (80%) peaked between 36° and 43°.
August, year by year
The average August high in each year. The warmest, 2020, averaged 42°C; the coolest, 2014, 37°C.
Compared with home
Average August highs. Expect rain on about 2 days (11 mm in a typical month).
- Las Vegas40°
- London24°
- Manchester20°
- Dublin20°
- Cork20°
- Glasgow19°
- Belfast19°
Warmer in August, not much further
Flying times are estimates from Dublin; Las Vegas is about 10h 15m.
Very hot in Aug
42°C average high
avg high · 27° at night
25°C+ on almost every day · often 35°C+
Very hot in Aug
43°C average high
avg high · 29° at night
25°C+ on almost every day · often 35°C+
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Las Vegas airport. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology