| Merewether Beach | New South Wales | Tasman Sea | 19.2°C(66.6°F) | January, February, March, April | Live SST → |
| Merimbula Beach | New South Wales | Tasman Sea | 17.4°C(63.3°F) | January, February, March, April | Live SST → |
| Mermaid Beach Beach | Queensland | Coral Sea | 22.6°C(72.7°F) | January, February, March, April, December | Live SST → |
| Mermaids Beach | Queensland | Coral Sea | 25.1°C(77.2°F) | January, February, March, April, May, October, November, December | Live SST → |
| Mermaids Beach | Tasmania | Tasman Sea | 13.2°C(55.8°F) | January, February, March, April | Live SST → |
| Merry Beach | New South Wales | Tasman Sea | 18.1°C(64.6°F) | January, February, March, April | Live SST → |
| Mettams Pool | Western Australia | Coastal Waters | 18.8°C(65.8°F) | January, February, March, April | Live SST → |
| Miami Beach | Queensland | Coral Sea | 22.6°C(72.7°F) | January, February, March, April, December | Live SST → |
| Middle Beach | New South Wales | Tasman Sea | 17.4°C(63.3°F) | January, February, March, April | Live SST → |
| Middle Beach | Australia | Tasman Sea | 19.9°C(67.8°F) | January, February, March, April, December | Live SST → |
| Middle Park Beach | Victoria | Tasman Sea | 14.5°C(58.1°F) | January, February, March, December | Live SST → |
| Middleton Beach | Western Australia | Coastal Waters | 17.4°C(63.3°F) | February, March, April, May | Live SST → |
| Milk Beach | New South Wales | Tasman Sea | 19.4°C(66.9°F) | January, February, March, April | Live SST → |
| Mill Beach | New South Wales | Tasman Sea | 18.1°C(64.6°F) | January, February, March, April | Live SST → |
| Millingtons Beach | Tasmania | Tasman Sea | 12.9°C(55.2°F) | January, February, March, April | Live SST → |
| Mills Beach | Victoria | Tasman Sea | 14.5°C(58.1°F) | January, February, March, December | Live SST → |
| Mindarie Beach | Western Australia | Coastal Waters | 18.8°C(65.8°F) | January, February, March, April | Live SST → |
| Mindil Beach | Northern Territory | Timor Sea | 29.9°C(85.8°F) | January, February, March, April, May, June, July, August, September, October, November, December | Live SST → |
| Miners Beach North | New South Wales | Tasman Sea | 21.7°C(71.1°F) | January, February, March, April | Live SST → |
| Minnie Water Back Beach | New South Wales | Coral Sea | 21.5°C(70.7°F) | January, February, March, April | Live SST → |
| Minnie Water Beach | New South Wales | Coral Sea | 21.5°C(70.7°F) | January, February, March, April | Live SST → |
| Misery Beach | Western Australia | Coastal Waters | 17.4°C(63.3°F) | February, March, April, May | Live SST → |
| Mitchells Beach | Australia | Tasman Sea | 12.5°C(54.5°F) | January, February, March, April | Live SST → |
| Moffat Beach | Queensland | Coral Sea | 22.7°C(72.9°F) | January, February, March, April, November, December | Live SST → |
| Mollymook Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |
| Mon Repos Beach | Queensland | Coral Sea | 23.1°C(73.6°F) | January, February, March, April, November, December | Live SST → |
| Mona Vale Beach | New South Wales | Tasman Sea | 19.2°C(66.6°F) | January, February, March, April | Live SST → |
| Monkey Beach | Australia | Coral Sea | 23.6°C(74.5°F) | January, February, March, April, November, December | Live SST → |
| Monument Beach | New South Wales | Tasman Sea | 18.7°C(65.7°F) | January, February, March | Live SST → |
| Mooloolaba Beach | Queensland | Coral Sea | 22.5°C(72.5°F) | January, February, March, April, December | Live SST → |
| Moon Bay | New South Wales | Tasman Sea | 17.6°C(63.7°F) | January, February, March, April | Live SST → |
| Mordialloc Beach | Victoria | Tasman Sea | 14.5°C(58.1°F) | January, February, March, December | Live SST → |
| Morgan's Beach | South Australia | Coastal Waters | 15.2°C(59.4°F) | January, February, March, April | Live SST → |
| Morgans Landing | South Australia | Coastal Waters | 15.7°C(60.3°F) | January, February, March, December | Live SST → |
| Mosman Beach | Western Australia | Coastal Waters | 18.6°C(65.5°F) | January, February, March, April | Live SST → |
| Muirs Beach | Tasmania | Tasman Sea | 13.2°C(55.8°F) | January, February, March, April | Live SST → |
| Mulambin Beach | Queensland | Coral Sea | 23.6°C(74.5°F) | January, February, March, April, November, December | Live SST → |
| Murdochs Beach | Tasmania | Tasman Sea | 13.1°C(55.6°F) | January, February, March, April | Live SST → |
| Murramarang Beach | New South Wales | Tasman Sea | 18.1°C(64.6°F) | January, February, March, April | Live SST → |
| Myrtle Beach | New South Wales | Tasman Sea | 18.1°C(64.6°F) | January, February, March, April | Live SST → |
| Mystics | New South Wales | Tasman Sea | 18.7°C(65.7°F) | January, February, March, April | Live SST → |
| Nadgee Beach | New South Wales | Tasman Sea | 15.9°C(60.6°F) | January, February, March, April | Live SST → |
| Narrabeen Beach | New South Wales | Tasman Sea | 19.2°C(66.6°F) | January, February, March, April | Live SST → |
| Narrawallee Beach | New South Wales | Tasman Sea | 18.3°C(64.9°F) | January, February, March, April | Live SST → |
| Native Dog Beach Road | Western Australia | Coastal Waters | 17.2°C(63°F) | January, February, March, April | Live SST → |
| Neds Beach | Australia | Tasman Sea | 19.9°C(67.8°F) | January, February, March, April, December | Live SST → |
| Neils Beach | Queensland | Coral Sea | 24.9°C(76.8°F) | January, February, March, April, May, October, November, December | Live SST → |
| Newcastle Beach | New South Wales | Tasman Sea | 19.2°C(66.6°F) | January, February, March, April | Live SST → |
| Newport Beach | New South Wales | Tasman Sea | 19.2°C(66.6°F) | January, February, March, April | Live SST → |
| Nielson's Beach | Queensland | Coral Sea | 23.1°C(73.6°F) | January, February, March, April, November, December | Live SST → |