Cozumel [1] isn’t famous for its beaches, but it is not without a few beautiful stretches of sand. A series of beach clubs on the calmer west side [2] are the best places to enjoy the sun and sand, but they can get crowded. Beaches on the east side [3] are windy and picturesque, and the surf can be fierce.
Links:
[1] http://www.moon.com/destinations/cancun-the-yucatan/cancun-cozumel-and-the-riviera-maya/isla-cozumel
[2] http://www.moon.com/destinations/cancun-the-yucatan/cancun-cozumel-and-the-riviera-maya/isla-cozumel/sights/beaches-and-beach-clubs/western-cozumel-
[3] http://www.moon.com/destinations/cancun-the-yucatan/cancun-cozumel-and-the-riviera-maya/isla-cozumel/sights/beaches-and-beach-clubs/eastern-cozumel-