(Anna Lee Campbell)

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Sure, it’s hot out there — but the dancing’s cool at the Lincoln Center Out of Doors Festival. This summer’s edition features three headlining outdoor performances that range from avant-garde to a grand finale of polyester, Afros and funk. And all of it’s free.

The festivities get off to a slow start — literally –with Eiko and Koma’s “Water” Wednesday night at 9:30. Performed in the plaza’s reflecting pool to Native American Robert Mirabal’s flute playing, the hourlong show has the duo in the water the whole time. As they perform in slow motion, the lighting makes them glow like spirits.

The Japanese couple has been doing their minimalist, otherworldly thing for four decades. If you’d like to see more, New York Public Library for the Performing Arts is mounting a free retrospective exhibit of their work, featuring films, costumes and designs. “Water,” a world premiere, runs nightly through Sunday.

Damrosch Park gets jazzed Aug. 3, when New Orleans’ renowned Preservation Hall Jazz Band and the Idaho-based Trey

McIntyre Project join forces.

McIntyre’s been making ballets with a contemporary twist for more than two decades, but his company’s come to New York only once before. For its Lincoln Center performance of “Ma Maison,” it’ll outfit nine jaunty dancers with skull masks to symbolize the macabre joy of the Big Easy. Its companion piece, “The Sweeter End,” features the band and its slo-mo version of “St. James Infirmary Blues.”

Stay tuned for the funked-up finale Aug. 11, when the Family Stone joins David Dorfman Dance for a special edition of Dorfman’s “Prophets of Funk.”

The show is a celebration of the band that gave us booty-shaking hits like “Dance to the Music.” And while it’s no longer fronted by the irrepressible Sly Stone — apparently, he and the Family have parted ways — it’s bound to be a nostalgia trip for people like Dorfman, who’s been dancing to the music since he was a kid and listened to it on eight-track tapes.

“Year by year, my hair got bigger, my shoes got taller and my clothes got more glittery and tighter,” the choreographer says. Dorfman went from funk and disco to modern dance, and while his Jewfro’s close-cropped nowadays, he never forgot his roots. For this show, he’ll play a manager figure in a loud plaid jacket and platform shoes. “I’m wearing stuff from my closet,” the 55-year-old says. “The only thing the costumer added was a bow tie.”

The show is usually performed to recordings, but the band is playing live at Lincoln Center. The surprise of the music is its variety, from disco to ballads.

“It’s unbelievable, the songs you didn’t know,” Dorfman says. “Prophets of Funk” takes about a dozen and moves from emotional solos and duets to straight-up partying.

And you will party. After the show, the band will play another set, and you’ll get to dance in the plaza.

For info and locations, visit LCOutofDoors.org or call 212-875-5766.