Whisk together the lemon juice, lemon zest and honey in a small bowl.
Add watermelon, cucumber, feta and mint to a large mixing bowl. Pour dressing over the salad and toss gently.
Serve immediately or chill for 1 to 2 hours in the fridge before serving.
Notes
Chill before serving: The flavors are even better when cold. Use seedless watermelon: It’s easier to prep and more pleasant to eat. Slice cucumbers thin: This keeps the texture balanced with the watermelon. Dress just before serving: Prevents the salad from getting soggy.