We rode bikes on our CC day in December. It was kind of chilly and pretty windy that day, a beautiful day but a little too cold for swimming. There's a nice path that takes you down an old airstrip to Serenety Bay (there was absolutely no one on the beach when we looked), then another path that takes you to the other side of the island where there is a lookout at rocky beach area (not allowed on it). It turned out to be a fun activity for the day! If the weather had been better I don't know if we would have even thought about it.