Verdict: Tough month
Las Vegas Weather in August
August is seriously hot in Las Vegas — days average 40°C (104°F), so plan mornings out and afternoons in the shade or the water. Rain is a non-issue, with only ~3 wet days in an average year. If your dates are flexible, most travelers will have a better time in Las Vegas outside August.
Average high
40°C / 104°F
Average low
27°C / 81°F
Rain days
~3
Precipitation
20 mm
What to pack for Las Vegas in August
- Light, breathable clothing — linen and technical fabrics earn their keep
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Comfortable walking shoes — every guide on this site assumes you'll use them
August against the rest of the year
Warmest in Las Vegas: Jul (42°C / 108°F) · Coolest: Jan (14°C / 57°F) · Wettest: Mar (~5 rain days)
14°
4°
Jan
17°
5°
Feb
20°
9°
Mar
27°
14°
Apr
32°
19°
May
38°
24°
Jun
42°
28°
Jul
40°
27°
Aug
36°
23°
Sep
29°
16°
Oct
19°
8°
Nov
15°
4°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)