Sea temperatures Guam Sea temperature Tamuning-Tumon-Harmon Village Created with Highcharts 3.0.8Sea temperature828282828484848684868482JanFebMarAprMayJuneJulAugustSeptOctNovDec0 °20 °40 °60 °80 °100 ° Jan Feb March April May June Jul August sept. Oct nov. dec. Sea temperature82°82°82°82°84°84°84°86°84°86°84°82°