| s'Alga | Spain | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| s'Alguer | Gerona | Balearic Sea | 22.5°C(72.5°F) | July, August, September | Live SST → |
| s'Alguer Petit | Gerona | Balearic Sea | 22.5°C(72.5°F) | July, August, September | Live SST → |
| S'Amarador | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| s'arenal de Mongofre | Balearic Islands | Balearic Sea | 25.1°C(77.2°F) | July, August, September | Live SST → |
| S’Arenal de Sa Canova | Balearic Islands | Balearic Sea | 25.4°C(77.7°F) | July, August, September | Live SST → |
| S'Arenalet (Fornells) | Balearic Islands | Balearic Sea | 25.1°C(77.2°F) | July, August, September | Live SST → |
| s'Arenalet d'es Verger | Balearic Islands | Balearic Sea | 25.4°C(77.7°F) | July, August, September | Live SST → |
| S'Argamassa | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| S'Enclusa | Balearic Islands | Balearic Sea | 25.2°C(77.4°F) | July, August, September | Live SST → |
| sa Barca Trencada | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| sa Bombarda | Balearic Islands | Balearic Sea | 25.2°C(77.4°F) | July, August, September | Live SST → |
| sa Caleta | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| Sa Caleta | Balearic Islands | Balearic Sea | 25.3°C(77.5°F) | July, August, September | Live SST → |
| Sa Marina | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| Sa Platja Gran | Balearic Islands | Balearic Sea | 25.3°C(77.5°F) | July, August, September | Live SST → |
| Sa Platja Petita | Balearic Islands | Balearic Sea | 25.3°C(77.5°F) | July, August, September | Live SST → |
| Sablera de San Pedro d'Antromero | Asturias | Cantabrian Sea | 19.7°C(67.5°F) | July, August, September, October | Live SST → |
| Sablera Palmera | Asturias | Cantabrian Sea | 19.7°C(67.5°F) | July, August, September, October | Live SST → |
| Sablera Rebolleres | Asturias | Cantabrian Sea | 19.7°C(67.5°F) | July, August, September, October | Live SST → |
| Sakoneta | Gipuzkoa | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Salinetas | Las Palmas | Alboran Sea | 23.5°C(74.3°F) | July, August, September, October, November | Live SST → |
| San Amaro | Ceuta | Alboran Sea | 21.3°C(70.3°F) | July, August, September, October | Live SST → |
| Sant Esteve de la Fosca | Gerona | Balearic Sea | 22.5°C(72.5°F) | July, August, September | Live SST → |
| Santa Mariña | Pontevedra | Cantabrian Sea | 16.9°C(62.4°F) | July, August, September, October | Live SST → |
| Santiago hondartza | Gipuzkoa | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Saturraran | Gipuzkoa | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Saturraran naturista | Gipuzkoa | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Segunda Playa de El Sardinero | Cantabria | Cantabrian Sea | 20.9°C(69.6°F) | July, August, September, October | Live SST → |
| Ses Estaques | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| Ses Fonts de n'Alis | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| Sol d’en Serra | Balearic Islands | Balearic Sea | 25.5°C(77.9°F) | July, August, September | Live SST → |
| Solabe hondartza | Bizkaia | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Son Bou | Balearic Islands | Balearic Sea | 25.2°C(77.4°F) | July, August, September | Live SST → |
| Son Moll | Balearic Islands | Balearic Sea | 25.4°C(77.7°F) | July, August, September | Live SST → |
| Sota Cala Margarida | Gerona | Balearic Sea | 22.5°C(72.5°F) | July, August, September | Live SST → |
| Tenerife (Costa Adeje) | Canary Islands | Atlantic Ocean | 24.2°C(75.6°F) | Jun, Jul, Aug, Sep, Oct, Nov | Live SST → |
| Toñako hondartza | Bizkaia | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |
| Toranda | Asturias | Cantabrian Sea | 20.7°C(69.3°F) | July, August, September, October | Live SST → |
| Torimbia | Asturias | Cantabrian Sea | 20.7°C(69.3°F) | July, August, September, October | Live SST → |
| Vallina | Asturias | Cantabrian Sea | 19.3°C(66.7°F) | July, August, September, October | Live SST → |
| Zarauzko hondartza | Gipuzkoa | Cantabrian Sea | 21.3°C(70.3°F) | June, July, August, September | Live SST → |