If you've been holding off putting your Manhattan apartment on the market, now's the time to do it. At least according to real estate analytics site Urban Digs, which found that May is the month with the highest contract volume (it's just slightly higher than the second-highest month, March).

"March, April, May and June are by far the top four months. But May is the best," says Noah Rosenblatt, founder of UrbanDigs, who says he can't think of a better time to list. "We're going into that peak deal volume period."

With the market favoring sellers and the season on your side, Rosenblatt says you should be able to find a buyer fairly fast. "If you're not selling in 60 days, something's wrong with your price," he adds.

He suggests adjusting the price and taking advantage of the seasonally strongest months for deal volume — before things quiet down (at least relatively) after July 4.

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