September · United States
Best time to visit Las Vegas in September Weather, crowds & prices
Weather in Las Vegas in September
Average temperature 29°C, 17 mm of rain, about 26 days with 6+ hours of sunshine and 27% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
6.4/10
Ranked #9 of 12 months
- Avg temp
- 29°C
- Rainfall
- 17 mm
- Humidity
- 27%
- Days with 6h+ sun
- 26
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Las Vegas scores 6.4/10 for sightseeing and cultural travel - ranked #9 of 12. Expect around 29°C, 17 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Neon Strip shows and desert day trips feel best in cooler November through March.
September in Las Vegas: mixed conditions, plan around the weather
Days in September average 29°C (84°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
With around 17 mm of rain, any showers tend to pass through rather than settle in; about 26 days with 6+ hours of sunshine and 12.2 hours of daylight fill the rest.
That is 6.4/10 on the same scale — 9th of 12 months, versus 9.5/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, April is materially better in Las Vegas — 3.1 points higher on the same scale.
Frequently asked
- What is the weather like in Las Vegas in September?
- In September, Las Vegas averages 29°C, 17 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 6.4/10.
- Is September a good time to visit Las Vegas?
- September earns a 6.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Las Vegas in September?
- Expect about 17 mm of rain in September. Average humidity is 27% and there are about 26 days with 6+ hours of sunshine.
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