| Täktomin uimaranta | Uusimaa | Archipelago Sea | 15°C(59°F) | June, July, August, September | Live SST → |
| Talman hiekkakuopan uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Tampajan uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Tapaninvainion uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Tapionranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Telakanranta | Finland Proper | Archipelago Sea | 14.2°C(57.6°F) | June, July, August, September | Live SST → |
| Tervajärven uimaranta | Uusimaa | Archipelago Sea | 14.9°C(58.8°F) | June, July, August, September | Live SST → |
| Tiiran uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Toppelundin koirauimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Toppelundin uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Torsniemen koirapuisto | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Tuiran uimaranta | Northern Ostrobothnia | Bothnian Sea | 13°C(55.4°F) | June, July, August, September | Live SST → |
| Tulliniemen eteläinen uimaranta | Uusimaa | Archipelago Sea | 15°C(59°F) | June, July, August, September | Live SST → |
| Tullisaaren uimapaikka | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Tuorinniemen uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Uimaranta Plagen | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Uiton uimaranta | Lapland | Bothnian Sea | 12.7°C(54.9°F) | June, July, August, September | Live SST → |
| Uunisaaren uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Valkjärven lähtelän uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Vanhasatamanlahden uimaranta | Central Ostrobothnia | Bothnian Sea | 12.8°C(55°F) | June, July, August, September | Live SST → |
| Värtön ranta | Northern Ostrobothnia | Bothnian Sea | 13°C(55.4°F) | June, July, August, September | Live SST → |
| Varvin uimaranta | Northern Ostrobothnia | Bothnian Sea | 12.6°C(54.7°F) | June, July, August, September | Live SST → |
| Västerbuktenin uimaranta | Finland Proper | Archipelago Sea | 14.6°C(58.3°F) | June, July, August, September | Live SST → |
| Veijarivuoren uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Vilniemen uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |
| Westendin uimaranta | Uusimaa | Archipelago Sea | 14.8°C(58.6°F) | June, July, August, September | Live SST → |