In a small bowl, whisk together honey, lime juice, olive oil, and a pinch of salt until the dressing is smooth and well combined.
In a large bowl, combine the watermelon cubes, cucumber, chopped mint, and chopped basil, keeping the pieces evenly sized for the best texture.
Pour the prepared dressing over the salad mixture, making sure it is evenly distributed across all ingredients.
Toss everything gently using a spoon or tongs, being careful not to break the watermelon pieces.
Sprinkle the crumbled feta cheese evenly over the top of the salad just before serving.
Serve immediately while the salad is fresh, chilled, and full of flavor.