Swimming in Croatia in september 2025 Sea temperature by city in september

In september in Croatia swimming conditions are generally the same everywhere.

As for Hvar island, Dubrovnik, Krk island, Pag island, Pula, Rovinj, Split, Zadar, Brač, Cres island, Korčula Island, Mljet, Vis island, Rijeka, Senj, Umag, Crikvenica, Gradac, Olib island, Biševo island, Čiovo island, Drvenik Veliki island, Dugi Otok island, Ilovik island, Iž island, Kaprije island, Koločep island, Kornati island, Krapanj island, Lastovo island, Lopud island, Lošinj island, Molat island, Murter island, Pašman island, Premuda island, Prvić island, Rab, Silba island, Šipan island, Šolta island, Susak island, Ugljan island, Unije island, Vir island, Žirje island, Zlarin island, Zverinac island, Opatija, Ploče, Poreč, Primošten, Trogir, Biograd na Moru, Brela, Cavtat, Dugi Rat, Fazana, Kamen, Kastel Gomilica, Kastel Kambelovac, Kraljevica, Krka, Labin, Lovran, Makarska, Novalja, Novi Vinodolski, Omiš, Pirovac, Punat, Šibenik, Starigrad, Tribunj, Vodice and Vrsar, swimming is pleasant in september. The sea water is 75°F on average (min: 71°F/max: 81°F) so you can easily spend time in the water.