Start by cutting the seedless watermelon into bite-sized cubes, about 1-inch pieces work best for easy eating. Then, dice the cucumber into similarly sized pieces. If your cucumber has thick skin or large seeds, you can peel and deseed it for a smoother texture, but this is optional.
Using your hands or a fork, crumble the feta cheese into small pieces. The salty, creamy texture of feta is essential for balancing the sweetness of the watermelon and the freshness of the cucumber.
Roughly chop the fresh mint leaves. Mint adds a cooling aroma and flavor that elevates the salad’s overall freshness.
In a small bowl, whisk together the olive oil and lime juice until well combined. Season with a pinch of salt and freshly ground black pepper. The lime juice not only adds brightness but also helps tie the flavors together beautifully.
In a large mixing bowl, combine the watermelon cubes, diced cucumber, crumbled feta, and chopped mint. Drizzle the olive oil and lime dressing over the top, and gently toss everything to evenly coat the ingredients with the dressing. Be careful not to break up the watermelon too much while tossing.
This salad is best served fresh to enjoy the crisp textures and vibrant flavors. However, you can refrigerate it for up to an hour before serving to allow the flavors to meld slightly. Just be aware that the watermelon will release some juice as it sits.