Las Vegas weather in August
August in Las Vegas: sweltering, dry, with clean air — a fair time to visit.
#11 of 12 months in Las Vegas · #543 of 604 destinations to visit in August · comfort 52/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Las Vegas climate normals — August
| Daytime high | 39°C / 102°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 25 mm / 1 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 38% | 🌵 dry |
| Dew point | 12°C / 54°F | |
| Sunshine | 12.3 h/day | |
| Daylight | 13.5 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Las Vegas?
Loading map…
Las Vegas in August — FAQ
- Is August a good time to visit Las Vegas?
- August in Las Vegas: sweltering, dry, with clean air — a fair time to visit. It ranks #11 of 12 months for Las Vegas on SeasonMap's comfort score (52/100).
- What is the weather like in Las Vegas in August?
- In August, Las Vegas averages a daily high of 38.7°C and a low of 25.5°C, with about 24.8 mm of rain over roughly 4.4 rainy days.
- What is the air quality in Las Vegas in August?
- Las Vegas has a mean US Air Quality Index of about 48 in August.