With daytime temperatures routinely running in the low-mid 50s, it’s been traditional for Las Vegas hotels to close their pools during the winter months. Today, a number of properties’ pool facilities are still closed between approximately November and March, or even later, depending on the weather. These currently include: Aladdin, Binion’s, New York New York, Harrah’s, Imperial Palace, Riviera, Bally’s (but guests may use the pool at Paris, which remains open), TI (guests may use the pool at Mirage), Hard Rock, Four Seasons, Luxor (but guests can use Excalibur's pool), Palms (closed until the spring for remodeling), and the Golden Nugget (ditto).
Those properties that continue to offer some kind of pool facility, often choose this time of year to undertake any scheduled construction or maintenance work, so you’ll probably find that services are much reduced and that generally only one pool will be kept open, even if the hotel has several.
As far as winter pool opening times are concerned, it varies from property to property, but count on the hours being approximately 10 am – 4 or 5 pm. The only exception to this is the indoor pool at the Tropicana, which is open 24/7, 365 days of the year. In all cases, pools are open to hotel guests only (except for the Rampart — see below).
Following are the results of the survey we conducted, with an alphabetical listing of those hotels that keep at least one pool open throughout the winter, together with the water temperature they maintain:
| Casino | Pool(s) open | Pool temperature |
| Bally’s | No pool open, but hotel guests can use pool and Jacuzzi at Paris sister property, next door | 74°F |
| Bellagio | One of the five pools is open | 84°F |
| Caesars Palace | Renovation work in progress so only one pool open, plus Jacuzzi | 82°F |
| Excalibur | Pool and Jacuzzi also open to guests of Luxor | 80°F |
| Flamingo | Smaller pool is open | 85°F |
| Green Valley Ranch | Main pool open | 70°F |
| Hyatt Lake Las Vegas | Upper pool and kids pool both open (plus hot tub) | 79-82°F |
| Las Vegas Hilton | One pool open | 83°F |
| Luxor | Usually open year-round but closed this season -- guests of the hotel can use pool at Excalibur | See Excalibur |
| Mandalay Bay | South Lagoon Pool (plus hot tubs) | 83°F |
| MGM Grand | One pool (plus two hot tubs) | 75-80°F |
| Mirage | Smaller pool reopened Dec. 31st and is open to guests of TI while their pool is closed (until March 1st) | 78°F |
| Monte Carlo | One pool open | 80°F |
| Paris | One pool (plus Jacuzzi) open - also open to guests of Bally’s | 74°F |
| Rampart | In addition to free access to hotel guests, for a daily fee of $35 locals and other non-hotel guests can use the pool, fitness, and spa facilities year-round. | 80°F |
| Rio | One pool open | 85°F | Ritz Carlton | One pool open | 83°F |
| Stratosphere | One pool open | 70°F |
| TI | Pool is closed until March 1st but in the meantime guests may use pool at Mirage | See Mirage |
| Tropicana | Indoor pool is open 24/7, year-round | 83°F |
| Venetian | All seven pools are open year-round | 84°F |
| Wynn | Currently only four of the five pools are open as the pool deck is undergoing construction work | 82°F |
