Here is a good read for any freediver or spearo especially if you live on the island of Oahu about tides, currents, and wind, conditions. Hope this helps you be safe.
http://www.deepfreediving.com/#!Sta...itions-Oahu-HI/c15ov/5612c5230cf2a7bb74c82e81
http://www.deepfreediving.com/#!Sta...itions-Oahu-HI/c15ov/5612c5230cf2a7bb74c82e81