Beyond conventions, major sports events and holidays also affect the visitor numbers. Unless you’re a sports bettor, I’d stay well clear of the city any time there’s a heavyweight boxing match, a NASCAR race or the World Series of Poker. The Super Bowl, baseball’s World Series and the NCAA basketball tournament in March also cram the town’s sports books with gamblers, causing hotel prices to balloon.

You might also consider staying away during major holidays, when an influx of visitors also causes rates to skyrocket. Halloween is huge in Vegas (lots of people head there for Gothic wedding ceremonies featuring tomato juice toasts and cameos by the Grim Reaper), as is Valentine’s Day (again for weddings), St. Patrick’s Day and New Year’s Eve.

To a somewhat lesser extent, all of the long-weekend holidays (Memorial Day, Presidents Day, Labor Day, etc.) also see an increase in rates and visitors. Time was when the family holidays — Thanksgiving and Christmas in particular — saw big drops in tourism numbers, but that’s no longer the case. (Maybe Grandma prefers the slots to turkey dinner with the toddlers … or she insists the entire family come to “Pair-O-Dice” to party with her.)

The only reason folks avoid Vegas around Christmas today is that it’s the month many performers take off. So if you’re heading to the Strip in December to see its legendary headliners strut their stuff, check first to make sure that they’ll be performing while you’re there.

Sin City is at its quietest when there aren’t any conventions or holidays, and when the desert climate is at its harshest. I’m talking December, January and February — when night winds whip down the Strip, freezing the toes of revelers in strappy high heels — and the blast-furnace months of June, July and August, when the blazing sun slaps down visitors more effectively than snake eyes on the craps table.
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