| Louisa D. Beach | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| Lower Beach | Nova Scotia | Coastal Waters | 15.7°C(60.3°F) | July, August, September, October | Live SST → |
| Lucas Beach | Nova Scotia | Labrador Sea | 17.2°C(63°F) | July, August, September, October | Live SST → |
| Lyons Beach | Nova Scotia | Coastal Waters | 12.6°C(54.7°F) | July, August, September, October | Live SST → |
| Mabens Beach | British Columbia | Coastal Waters | 12.4°C(54.3°F) | June, July, August, September | Live SST → |
| MacDonalds Beach | Nova Scotia | Labrador Sea | 17.6°C(63.7°F) | July, August, September, October | Live SST → |
| MacKenzies Bar | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| MacKinnons Beach | Nova Scotia | Labrador Sea | 16.8°C(62.2°F) | July, August, September, October | Live SST → |
| MacLeans Beach | Nova Scotia | Labrador Sea | 17.4°C(63.3°F) | July, August, September, October | Live SST → |
| MacLeods Beach | Nova Scotia | Labrador Sea | 16.8°C(62.2°F) | July, August, September, October | Live SST → |
| MacPhees Shore | Prince Edward Island | Labrador Sea | 16.3°C(61.3°F) | July, August, September, October | Live SST → |
| Macs Beach | New Brunswick | James Bay | 13.9°C(57°F) | July, August, September, October | Live SST → |
| Mahoneys Beach | Nova Scotia | Labrador Sea | 17.7°C(63.9°F) | July, August, September, October | Live SST → |
| Main Beach | British Columbia | Coastal Waters | 14.6°C(58.3°F) | June, July, August, September | Live SST → |
| Mallock Beach | New Brunswick | James Bay | 12.9°C(55.2°F) | July, August, September, October | Live SST → |
| Maneys Breaker | Canada | Labrador Sea | 17.1°C(62.8°F) | July, August, September, October | Live SST → |
| Manitou Beach | Ontario | James Bay | 19.4°C(66.9°F) | June, July, August, September | Live SST → |
| Martinique Beach | Canada | Labrador Sea | 16.8°C(62.2°F) | July, August, September, October | Live SST → |
| Martinon Beach | New Brunswick | James Bay | 13.5°C(56.3°F) | July, August, September, October | Live SST → |
| Mascarene Shore | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| McElwains Beach | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| McLarens Beach | New Brunswick | James Bay | 13.5°C(56.3°F) | July, August, September, October | Live SST → |
| McLeods Beach | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| Meisners Beach | Nova Scotia | Coastal Waters | 16.2°C(61.2°F) | July, August, September, October | Live SST → |
| Middle Beach | British Columbia | Coastal Waters | 13.1°C(55.6°F) | June, July, August, September | Live SST → |
| Middle Beach | Ontario | James Bay | 13.6°C(56.5°F) | July, August, September, October | Live SST → |
| Myettes Beach | Nova Scotia | Labrador Sea | 17.7°C(63.9°F) | July, August, September, October | Live SST → |
| Myras Beach | Nova Scotia | Coastal Waters | 16.5°C(61.7°F) | July, August, September, October | Live SST → |
| Navy Bar | Canada | James Bay | 12.9°C(55.2°F) | July, August, September, October | Live SST → |
| Navy Island Shoal | Canada | James Bay | 12.9°C(55.2°F) | July, August, September, October | Live SST → |
| Neil’s harbor beach | Nova Scotia | Labrador Sea | 16.5°C(61.7°F) | July, August, September, October | Live SST → |
| New Beach | Ontario | James Bay | 17.4°C(63.3°F) | July, August, September, October | Live SST → |
| New River Beach | New Brunswick | James Bay | 13.4°C(56.1°F) | July, August, September, October | Live SST → |
| New Wasaga Beach | Ontario | James Bay | 18.8°C(65.8°F) | July, August, September, October | Live SST → |
| North Beach | Ontario | James Bay | 13.6°C(56.5°F) | July, August, September, October | Live SST → |
| North Rustico Beach | Prince Edward Island | Labrador Sea | 17.5°C(63.5°F) | July, August, September, October | Live SST → |
| Nottawaga Beach | Ontario | James Bay | 18.8°C(65.8°F) | July, August, September, October | Live SST → |
| Oakfield Park Beach | Nova Scotia | Labrador Sea | 16.7°C(62.1°F) | July, August, September, October | Live SST → |
| Old Mill Beach | Ontario | James Bay | 16.4°C(61.5°F) | July, August, September, October | Live SST → |
| Outlet Beach | Ontario | James Bay | 20.1°C(68.2°F) | July, August, September, October | Live SST → |
| Oxner's Beach | Nova Scotia | Coastal Waters | 16.2°C(61.2°F) | July, August, September, October | Live SST → |
| Pachena Beach | British Columbia | Coastal Waters | 12.4°C(54.3°F) | June, July, August, September | Live SST → |
| Paddys Beach | Nova Scotia | Coastal Waters | 16.5°C(61.7°F) | July, August, September, October | Live SST → |
| Partridge Island Beach | Nova Scotia | James Bay | 14.8°C(58.6°F) | July, August, September, October | Live SST → |
| Pebble Beach | British Columbia | Coastal Waters | 14.4°C(57.9°F) | June, July, August, September | Live SST → |
| Pembroke Beach | Nova Scotia | James Bay | 12.6°C(54.7°F) | July, August, September, October | Live SST → |
| Petit Etang Beach | Nova Scotia | Labrador Sea | 16.5°C(61.7°F) | July, August, September, October | Live SST → |
| Petit Nez Beach | Nova Scotia | Labrador Sea | 17°C(62.6°F) | July, August, September, October | Live SST → |
| Pierces Beach | Nova Scotia | Coastal Waters | 15.7°C(60.3°F) | July, August, September, October | Live SST → |
| Pineo Beach | Nova Scotia | James Bay | 14.8°C(58.6°F) | July, August, September, October | Live SST → |