Place all ingredients in a large bowl; toss gently to combine. Serve immediately.
Wine note: There's no better match for this refreshing watermelon salad than a chilled dry rosé. Both are cold, pink, crisp, and fruity--a magical marriage that's a must-try this summer. Two of my favorite rosés, one still, the other sparkling: Robert Hall Rosé de Robles 2005 from Paso Robles, California ($15) and Korbel Brut Rosé Sparkling Wine (nonvintage) from California ($11). --Karen MacNeil