What to pack for Las Vegas in September
- light, breathable clothing
- sun protection (hat, SPF 50)
Humidity averages 22%; max daily wind around 21 km/h.
How September compares
Best months in Las Vegas: February–April & October–November. See the full best time to visit Las Vegas guide.
Las Vegas in September: the details
In September, Las Vegas sees average daytime highs of 36°C (97°F) and overnight lows of 23°C (73°F). Rainfall totals roughly 11 mm across 1 rainy days, and the sun shines about 11.5 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 22%.
In context: September is the 4th-warmest month and the 7th-wettest in Las Vegas. The sunniest month is June (13.6 h/day).
| Metric | September average |
|---|---|
| Daytime high | 36°C / 97°F |
| Overnight low | 23°C / 73°F |
| Rainfall | 11 mm over 1 rainy days |
| Sunshine | 11.5 h/day (12.2 h daylight) |
| Humidity | 22% |
| Travel score | 4.2 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Las Vegas, United States (36.17, -115.14) — see our methodology. Actual conditions vary year to year.
Not set on Las Vegas? Browse the best places to visit in September ranked by travel score.
Frequently asked questions
How hot is Las Vegas in September?
Daytime highs in Las Vegas in September average 36°C (97°F); nights drop to about 23°C.
Does it rain in Las Vegas in September?
Expect around 1 rainy days and 11 mm of rainfall in September.
Is September a good time to visit Las Vegas?
September is a challenging month to visit Las Vegas — consider February–April & October–November instead. Overall travel score: 4.2/10. The best months are February–April & October–November.
Also good in September, near Las Vegas
Where should you go next month?
Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.