| Shelving Beach | Australia | Coral Sea | 21.7°C(71.1°F) | January, February, March, April, November, December | Live SST → |
| Shipwreck Creek Beach | Victoria | Tasman Sea | 15.1°C(59.2°F) | January, February, March, April | Live SST → |
| Shire Hall Beach | Victoria | Tasman Sea | 12.1°C(53.8°F) | January, February, March, December | Live SST → |
| Short Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Silica Beach | New South Wales | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Silver Beach | New South Wales | Tasman Sea | 18.2°C(64.8°F) | January, February, March, April | Live SST → |
| Silverleaves | Victoria | Tasman Sea | 13.2°C(55.8°F) | January, February, March, April | Live SST → |
| Sisters Beach | Tasmania | Tasman Sea | 12.1°C(53.8°F) | January, February, March, April | Live SST → |
| Sloping Main | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Smalleys Beach | Queensland | Coral Sea | 22.8°C(73°F) | January, February, March, April, May, October, November, December | Live SST → |
| Smith Beach | South Australia | Coastal Waters | 14.5°C(58.1°F) | January, February, March, December | Live SST → |
| Smiths Beach | Western Australia | Coastal Waters | 17.6°C(63.7°F) | January, February, March, April | Live SST → |
| Smiths Beach | Victoria | Tasman Sea | 13.2°C(55.8°F) | January, February, March, April | Live SST → |
| Snapper Rocks Beach | New South Wales | Coral Sea | 21.4°C(70.5°F) | January, February, March, April, December | Live SST → |
| Snelling Beach | South Australia | Coastal Waters | 14.6°C(58.3°F) | January, February, March, December | Live SST → |
| Snug Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Sommers Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Sorrento Ocean Beach | Victoria | Tasman Sea | 13°C(55.4°F) | January, February, March, December | Live SST → |
| South Arm Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| South Beach | Western Australia | Coastal Waters | 18.6°C(65.5°F) | January, February, March, April | Live SST → |
| South Era Beach | New South Wales | Tasman Sea | 18.2°C(64.8°F) | January, February, March, April | Live SST → |
| South Gorge Beach | Queensland | Coral Sea | 21.8°C(71.2°F) | January, February, March, April, November, December | Live SST → |
| South Melbourne Beach | Victoria | Tasman Sea | 12.2°C(54°F) | January, February, March, December | Live SST → |
| South Trigg Beach | Western Australia | Coastal Waters | 18.7°C(65.7°F) | January, February, March, April | Live SST → |
| South Valla Beach | New South Wales | Coral Sea | 20.3°C(68.5°F) | January, February, March, April | Live SST → |
| South Waddy Beach | Queensland | Coral Sea | 22.2°C(72°F) | January, February, March, April, May, November, December | Live SST → |
| Southcombe Beach | Victoria | Coastal Waters | 13.9°C(57°F) | January, February, March, December | Live SST → |
| Spencer Park Beach | New South Wales | Tasman Sea | 16.3°C(61.3°F) | January, February, March, April | Live SST → |
| Spiky Beach | Tasmania | Tasman Sea | 12.2°C(54°F) | January, February, March, April | Live SST → |
| Spring Beach | Tasmania | Tasman Sea | 12.4°C(54.3°F) | January, February, March, April | Live SST → |
| Squeaky Beach | Victoria | Tasman Sea | 13°C(55.4°F) | January, February, March, April | Live SST → |
| St Kilda Beach | Victoria | Tasman Sea | 12.2°C(54°F) | January, February, March, December | Live SST → |
| St Kilda Beach | South Australia | Coastal Waters | 14.1°C(57.4°F) | January, February, March, December | Live SST → |
| Stapleton Beach | Tasmania | Tasman Sea | 12.4°C(54.3°F) | January, February, March, April | Live SST → |
| Station Beach | Victoria | Tasman Sea | 13.7°C(56.7°F) | January, February, March, April | Live SST → |
| Steamer's Beach | Jervis Bay Territory | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Steels Beach | Tasmania | Tasman Sea | 12.9°C(55.2°F) | January, February, March, April | Live SST → |
| Stockton Beach | New South Wales | Tasman Sea | 18.5°C(65.3°F) | January, February, March, April | Live SST → |
| Summerland Beach | Victoria | Tasman Sea | 13.2°C(55.8°F) | January, February, March, April | Live SST → |
| Sunnymead Beach | Victoria | Tasman Sea | 13.1°C(55.6°F) | January, February, March, April | Live SST → |
| Sunnyside Beach | Victoria | Tasman Sea | 12.1°C(53.8°F) | January, February, March, December | Live SST → |
| Sunrise Beach | Western Australia | Coastal Waters | 22.6°C(72.7°F) | January, February, March, April, May, November, December | Live SST → |
| Sunshine Beach | Queensland | Coral Sea | 21.5°C(70.7°F) | January, February, March, April, December | Live SST → |
| Surf Beach | New South Wales | Tasman Sea | 17.8°C(64°F) | January, February, March, April | Live SST → |
| Surfers Beach | South Australia | Coastal Waters | 14°C(57.2°F) | January, February, March, December | Live SST → |
| Surfers Paradise (Gold Coast) | Queensland | Coral Sea / Pacific Ocean | 21.2°C(70.2°F) | Nov, Dec, Jan, Feb, Mar, Apr, May | Live SST → |
| Surfers Paradise Beach | Queensland | Coral Sea | 21.6°C(70.9°F) | January, February, March, April, May, November, December | Live SST → |
| Suttons Beach | Queensland | Coral Sea | 20.5°C(68.9°F) | January, February, March, April, December | Live SST → |
| Svendsons Beach | Australia | Coral Sea | 21.7°C(71.1°F) | January, February, March, April, November, December | Live SST → |
| Swanbourne Beach | Western Australia | Coastal Waters | 18.7°C(65.7°F) | January, February, March, April | Live SST → |