Put the chopped cucumbers in a large colander and toss with a large pinch of salt. Put the colander in the sink and let the cucumbers sit for 20 minutes, then gently pat dry with a paper towel.
Put the cucumbers, yogurt, lemon juice, dill, olive oil, and garlic in a large bowl; season with salt and pepper. Stir to combine, then taste and adjust the seasoning. Serve immediately, or cover and refrigerate for a few hours before serving.
