The beaches at Mykonos are party beaches, where you swim in the day time and dance at the night time. During the day time, it's sunny and calm, the water is crystal blue and clear. People usually sitting by the beach or swim. At the night, it's a total opposite - the loud music and crowd, the dance and the drink. The beach never sleeps.
Depending on your tastes, Paradise Beach in Mykonos might be heaven or hades. If you like skimpy Speedos (there's a nude area if you prefer) and loud music, you'll love it. This is the Mykonos that looms large in the public imagination. The Cavo Paradiso club complex, high on a hilltop, adds to the party vibe by amping up the volume when the sun slips below the horizon.