Late November to Christmas and early January to February are traditionally slow times in Las Vegas, with some notable exceptions. Thanksgiving, which for a long time was one of the slowest weekends of the year, has gained popularity recently and has attracted large crowds. Casinos and hotels offer discounted room rates from Sunday to Thursday. Rates are also lower from November to January, although the exceptions are the Thanksgiving holidays and the few days before and after the New Year.
Coincidentally, the buffet lines are also the least crowded during this period. Weekdays are a little less crowded than weekends. Holidays are always a scene of crowds and are accompanied by high hotel prices. Hotel prices also skyrocket when major conventions and special events are held.
The slowest times of the year are parts of January and February; from late June to August; the week before Christmas and the week after New Year's. With the scorching heat that can move the thermostat towards 100 degrees Fahrenheit, July and August see a decline in the number of visitors to Las Vegas. You can find cheaper room rates and airline tickets as temperatures rise. Plan to spend most of your time at home if you choose this route; dehydration and heat stroke are common ailments during the Las Vegas summer.
The most important thing is to remember to drink plenty of water. One thing you'll hear over and over again is that even though it's very hot in Las Vegas, the dry desert heat isn't unbearable. Visit the Las Vegas Convention and Visitors Authority to see when conventions are being held in the city to avoid convention madness. While the location of Las Vegas makes for scorching summer temperatures, many people tend to forget that deserts are cold and rainy, while wind is also a potential hazard.
Las Vegas' major annual conventions flood the city with people, raising prices and making it difficult to find available hotel rooms. While Las Vegas enjoys the sun for more than 300 days a year, the coldest and hottest months of the year tend to keep visitors away. While Las Vegas is a major tourist destination and a must see when visiting the United States, given its sunny and dry weather that lasts most of the year, the best time to visit Las Vegas is during the less hot months of October to March. The soil of Las Vegas is dry most of the year, making it difficult for the earth to absorb large amounts of water that fall in a short time.
Due to its weather conditions, Las Vegas has a long and intensely hot summer season, and a shorter but cooler winter season, and intermittent rains throughout the year, with an average of 21 days of rain per year. Most years, there are gusts or two in Las Vegas, and since 1949, a total of 12 “storms” have caused accumulations of 2 inches or more. The biggest storm fell 9 inches on the Strip in January 1949.The hottest months in Las Vegas are from May to August, with negligible rainfall but very low humidity, due to its warm, subtropical desert climate. While the Las Vegas off-season generally means fewer crowds and greater discounts on lodging, airline tickets, attractions and food, rates can rise suddenly if a convention or special event comes to town.
Because most visitors enjoy Las Vegas from the comfort of indoor air conditioning, Las Vegas has become a year-round destination, no matter how extreme the weather. On the eve of the hectic Christmas and New Year season, Las Vegas experiences a break in mid-December and a post-New Year's funk. That's why there are entire periods of the year when you're not going to use the hotel pool at all (even if you want to; most hotels close large parts of those pool areas for “season”, which can last as long as the period between Labor Day and Memorial Day). According to the Las Vegas Convention and Visitors Authority, traffic traditionally declined from mid-July to the end of August, but the appeal of wave pools and mighty rivers, such as those in Mandalay Bay, the MGM Grand and Monte Carlo, has brought visitors back to the city.