01 - In a large bowl, combine the sliced cucumbers, red onion, and chopped fresh dill.
02 - In a small bowl, whisk together white wine vinegar, olive oil, sugar, salt, and black pepper until the sugar dissolves.
03 - Pour the dressing over the cucumber mixture and toss gently to combine.
04 - Refrigerate for at least 10 minutes before serving to allow flavors to meld. Serve chilled.