Typhoon season runs from May till December producing stronger storms than anywhere in the world. May. The low pressures move quickly down from Korea ramming into Okinawa and giving us good, but chilly surf. Then super typhoons come delivering some very large surf on all corners of the island. One of the best waves is actually at the Sunabe seawall. Now, on any given day that you walk your dog or snorkel down at the seawall you wont see these waves, but when the window opens and the south lines start to light up the west side you would really be surprised.
Spring offers a mixed plate of south wind swell and leftover low pressures.
The corel reef is live, sharp and shallow . The tides are extreme with a swing of about 6 feet. The good rule of thumb for someone just getting here is surf 2 house before and 2 hours after high tide. There are only two real sand bottom beach breaks on Okinawa. Most everything else is reef.