01Weather
Las Vegas weather in September
Afternoons in September average 35.1 °C (95 °F) and nights cool to 22.9 °C (73 °F). The month brings about 3 mm (0.1 in) of rain spread over roughly 0 days. Compared with August it is 4.4 °C cooler; October is 7.2 °C cooler again.
What the averages hide
| In a typical September | Value | What it means |
|---|---|---|
| Warm afternoons (90th percentile) | 41 °C / 105 °F | one day in ten is at least this warm |
| Cool afternoons (10th percentile) | 29 °C / 85 °F | one day in ten stays below this |
| Cold nights (10th percentile) | 19 °C / 66 °F | one night in ten is colder than this |
| Days above 30 °C (86 °F) | 27.2 | per month, average 2016–2025 |
| Nights at or below 0 °C (32 °F) | 0.0 | frost mornings per month |
| Chance of rain on any given day | 1 % | at least 1 mm |
| Hottest / coldest September day 2016–2025 | 46.1 °C / 11.7 °C | extremes in the ten-year record |
02Daylight
Sunrise, sunset and the length of the day
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 1 September | 06:12 | 19:08 | 12.9 h |
| 15 September | 06:23 | 18:48 | 12.4 h |
| 30 September | 06:34 | 18:26 | 11.9 h |
Daylight shrinks by about 60 minutes over the month. Times are local (America/Los_Angeles).
03Crowds
How busy Las Vegas is in September
busy The main sights are busy in September. What drives it:
- Labor Day weekend
- Life is Beautiful festival
- heat eases late September
04Public holidays
Public holidays in September 2027
| Date | Holiday |
|---|---|
| 6 Sep 2027 | Labour Day |
On public holidays many shops close and museums run on Sunday hours; check opening times for the day before and after as well.
05Events
What's on in Las Vegas in September
Every year in September
| Event | When | Type |
|---|---|---|
| Life is Beautiful | September, Downtown | music |
07Packing
What to pack for Las Vegas in September
- light, breathable clothing
- sun hat and sunscreen
- refillable water bottle
- something for heat: 27 days a month pass 30 °C on average
08Editor's notes
What the numbers don't tell you
September begins hot, around 36 °C, and ends pleasant near 30 °C, with Labor Day weekend and the Life is Beautiful festival Downtown drawing crowds in the first half. Football season starts, so weekends fill with fans for the Raiders' home games and the sportsbooks. Late September is the beginning of the best weather and the return of convention pricing. Rain is rare.
Pools remain open all month. Nights become comfortable again, around 22 °C by month-end. The Mexican Independence Day weekend in mid-September brings boxing fights and the biggest Latin American crowd of the year. Midweek rates are still low in the first half. For the ideal walking weather with Halloween and the convention peak, see October.
09Compare
Las Vegas month by month
| Month | High | Low | Rain days | Sun h | Crowds | Verdict |
|---|---|---|---|---|---|---|
| January | 14 °C | 5 °C | 1 | – | busy | Good |
| February | 17 °C | 7 °C | 0 | – | busy | Excellent |
| March | 21 °C | 10 °C | 1 | – | very busy | Good |
| April | 27 °C | 15 °C | 0 | – | busy | Excellent |
| May | 31 °C | 19 °C | 0 | – | busy | Good |
| June | 38 °C | 25 °C | 0 | – | moderate | Good |
| July | 41 °C | 28 °C | 0 | – | moderate | Good |
| August | 40 °C | 27 °C | 1 | – | quiet | Good |
| September | 35 °C | 23 °C | 0 | – | busy | Good |
| October | 28 °C | 16 °C | 0 | – | busy | Excellent |
| November | 20 °C | 9 °C | 0 | – | very busy | Good |
| December | 15 °C | 5 °C | 1 | – | busy | Good |
Not sure about September? See the best time to visit Las Vegas.
10Elsewhere
September in nearby cities
| City | High | Rain days |
|---|---|---|
| Los Angeles in September | 26 °C | 0 |
| San Francisco in September | 24 °C | 0 |
| Vancouver in September | 20 °C | 9 |
| Toronto in September | 23 °C | 8 |
| Cancún in September | 32 °C | – |
| Orlando in September | 32 °C | 9 |
11FAQ
Las Vegas in September: your questions
Is September a good time to visit Las Vegas?
September is a good month to visit Las Vegas. Daytime highs average 35 °C (95 °F), rain falls on about 0 days, and hotel arrivals run above the yearly average, so the main sights are busy.
What is the weather like in Las Vegas in September?
Expect hot days around 35 °C (95 °F) and nights near 23 °C (73 °F). One September in ten brings afternoons above 41 °C, and one in ten stays below 29 °C.
Does it rain a lot in Las Vegas in September?
September brings about 3 mm (0.1 in) of rain over roughly 0 days, which is dry by Las Vegas standards. On any given day the chance of at least 1 mm of rain is 1 percent.
What should I wear in Las Vegas in September?
Pack light, breathable clothing, sun hat and sunscreen, refillable water bottle.
Is Las Vegas crowded in September?
The main sights are busy in September. Main drivers: Labor Day weekend; Life is Beautiful festival; heat eases late September.
What time does it get dark in Las Vegas in September?
Around the middle of September the sun sets at about 18:48 and rises at 06:23, giving 12.4 hours of daylight.