In a large mixing bowl, combine the cubed watermelon, halved cherry tomatoes, crumbled feta cheese, sliced red onion, and chopped basil.

In a small bowl, whisk together the olive oil, balsamic vinegar, honey, salt, and pepper.

Drizzle the dressing over the salad and gently toss to combine.

Serve immediately or chill in the refrigerator for 30 minutes before serving.