Sea temperatures Latvia Sea temperature Riga Created with Highcharts 3.0.8Sea temperature322410151919171396JanFebMarAprMayJuneJulAugustSeptOctNovDec0 °5 °10 °15 °20 ° Jan Feb March April May June Jul August sept. Oct nov. dec. Sea temperature3°2°2°4°10°15°19°19°17°13°9°6°