| Bushrangers Bay | Victoria | Tasman Sea | 12.8°C(55°F) | January, February, March, December | Live SST → |
| Buttons Beach | Tasmania | Tasman Sea | 12.1°C(53.8°F) | January, February, March, April | Live SST → |
| Byron Bay | New South Wales | Pacific Ocean | 20.5°C(68.9°F) | Dec, Jan, Feb, Mar, Apr | Live SST → |
| C. Y. O'Connor Beach | Western Australia | Coastal Waters | 18.6°C(65.5°F) | January, February, March, April | Live SST → |
| Cabbage Tree Beach | New South Wales | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Cable Beach | Western Australia | Savu Sea | 25.4°C(77.7°F) | January, February, March, April, May, June, September, October, November, December | Live SST → |
| Cable Beach | Western Australia | Coastal Waters | 17.6°C(63.7°F) | February, March, April, May | Live SST → |
| Cable Beach | Western Australia | Savu Sea | 25.4°C(77.7°F) | January, February, March, April, May, June, September, October, November, December | Live SST → |
| Cable Beach | Western Australia | Savu Sea | 25.4°C(77.7°F) | January, February, March, April, May, June, September, October, November, December | Live SST → |
| Callawonga Beach | South Australia | Coastal Waters | 14°C(57.2°F) | January, February, March, April | Live SST → |
| Calverts Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Camp Cove Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Carlisle Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Carrum Beach | Victoria | Tasman Sea | 12.1°C(53.8°F) | January, February, March, December | Live SST → |
| Castle Rock Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Cat and Kitten Beach | New South Wales | Tasman Sea | 17°C(62.6°F) | January, February, March, April | Live SST → |
| Catherine Beach | Australia | Coastal Waters | 18.7°C(65.7°F) | January, February, March, April | Live SST → |
| Catherine Hill Bay Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Catseye Beach | Australia | Coral Sea | 23.2°C(73.8°F) | January, February, March, April, May, October, November, December | Live SST → |
| Cave Beach | Jervis Bay Territory | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Cheviot Beach | Australia | Tasman Sea | 13°C(55.4°F) | January, February, March, December | Live SST → |
| Cheyne Beach | Western Australia | Coastal Waters | 17.6°C(63.7°F) | February, March, April, May | Live SST → |
| Chinamans Beach | New South Wales | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Chinamans Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| City Beach | Western Australia | Coastal Waters | 18.7°C(65.7°F) | January, February, March, April | Live SST → |
| Clam Beach | Australia | Coral Sea | 21.7°C(71.1°F) | January, February, March, April, November, December | Live SST → |
| Cleveland Bay | Queensland | Coral Sea | 23.9°C(75°F) | January, February, March, April, May, October, November, December | Live SST → |
| Clifton Beach | Victoria | Tasman Sea | 13.7°C(56.7°F) | January, February, March, April | Live SST → |
| Clontarf Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Clontarf Beach | Queensland | Coral Sea | 20.4°C(68.7°F) | January, February, March, April, December | Live SST → |
| Clovelly Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Cobblers Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Cocoa Beach | Australia | Savu Sea | 23.9°C(75°F) | January, February, March, April, May, June, July, October, November, December | Live SST → |
| Coledale Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |
| Coles Beach | Tasmania | Tasman Sea | 12.2°C(54°F) | January, February, March, April | Live SST → |
| Collaroy Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |
| Collingwood Beach | New South Wales | Tasman Sea | 17.8°C(64°F) | January, February, March | Live SST → |
| Coningham Beach | Tasmania | Tasman Sea | 12°C(53.6°F) | January, February, March, April | Live SST → |
| Coniston Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |
| Conjola Beach | New South Wales | Tasman Sea | 17.3°C(63.1°F) | January, February, March, April | Live SST → |
| Connors Beach | New South Wales | Tasman Sea | 20.5°C(68.9°F) | January, February, March, April | Live SST → |
| Coogee Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Cookies Beach | New South Wales | Tasman Sea | 17°C(62.6°F) | January, February, March, April | Live SST → |
| Cooks Beach | Tasmania | Tasman Sea | 12.6°C(54.7°F) | January, February, March, April | Live SST → |
| Coolangatta Beach | New South Wales | Coral Sea | 21.4°C(70.5°F) | January, February, March, April, December | Live SST → |
| Coolum Beach | Queensland | Coral Sea | 21.3°C(70.3°F) | January, February, March, April, December | Live SST → |
| Coral Cove | Australia | Coral Sea | 23.2°C(73.8°F) | January, February, March, April, May, October, November, December | Live SST → |
| Corindi Beach | New South Wales | Coral Sea | 20.2°C(68.4°F) | January, February, March, April | Live SST → |
| Corner Beach | New South Wales | Tasman Sea | 18.4°C(65.1°F) | January, February, March, April | Live SST → |
| Corrimal Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |