Add the watermelon, cherries, strawberries, blueberries, blackberries, and torn mint leaves to a large mixing bowl.
In a small bowl, whisk together the fresh lime juice, honey, and kosher salt until well combined.
Pour the dressing over the fruit mixture.
Gently toss everything together until the fruit is evenly coated.
Refrigerate the Watermelon Fruit Salad Recipe for at least 15–30 minutes before serving for the best flavor.
Serve chilled and enjoy.