Very hot in May
36°C average high
avg high · 23° at night
25°C+ on almost every day · often 35°C+
Nevada, USA
Las Vegas weather in May
Is it warm? Yes. May in Las Vegas is hot: afternoons average 32°C and nights 19°C. Most days (80%) peak between 26°C and 37°C.
Hot · average high
32°C
25°C or more on about nine in ten days; 20°C or more on almost every day. 35°C or more on about two in ten days.
- Average low19°overnight
- Sea—inland
- Rainy days15 mm in the month
- SkySome cloud27% cloud · 62% clear days
How warm it really gets
Every May afternoon from 2011–2025: 465 days. Most (80%) peaked between 26° and 37°.
May, year by year
The average May high in each year. The warmest, 2020, averaged 34°C; the coolest, 2019, 28°C.
Compared with home
Average May highs. Rain is rare: less than one wet day in a typical month.
- Las Vegas32°
- London19°
- Glasgow17°
- Manchester16°
- Cork16°
- Belfast16°
- Dublin16°
Warmer in May, not much further
Flying times are estimates from Dublin; Las Vegas is about 10h 15m.
Very hot in May
35°C average high
avg high · 25° at night
25°C+ on almost every day · often 35°C+
Very hot in May
34°C average high
avg high · 24° 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