Sea temperatures Antigua and Barbuda Sea temperature Saint John's Created with Highcharts 3.0.8Sea temperature807880808282848484848282JanFebMarAprMayJuneJulAugustSeptOctNovDec0 °20 °40 °60 °80 °100 ° Jan Feb March April May June Jul August sept. Oct nov. dec. Sea temperature80°78°80°80°82°82°84°84°84°84°82°82°