Weizhou Island : Volcanic beaches

This island is found off the coast of Beihai, accessible by Ferry. It has beautiful beaches filled with interesting geological formations. I went in March and the weather was perfect - sunny in the middle of the day but breezy enough to feel comfortable. The Island itself is very expensive to visit (2x ferry tickets & an entrance fee for the island) so I would recommend taking a couple of days and doing some diving or swimming while you are there to make the most of the trip.