Hamilton and Burlington offer freshwater diving and snorkelling across a mix of wreck and lake sites on Lake Ontario. The fish life is the main draw: Common Carp, Sun Perch, Lake Trout, Rainbow Trout, Round Goby, and Walleye are all regularly observed. Water runs cold through winter and spring, warming meaningfully through summer. Shore access is available, and at least one wreck site is suited to beginners. Visibility varies with season and conditions.
Monthly water temperature across Hamilton & Burlington's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures stay very cold from winter through early spring, rising gradually through May and June before reaching their warmest in July and August. This summer window draws the most diving activity, with August the clear peak month. Autumn brings a swift cool-down, and drysuit or well-insulated wetsuit diving is the norm outside the warmest months.
4 operators
Canada
16 more sites to explore
Water temperature around Hamilton & Burlington ranges from about 3°C in January to 21°C in July, based on satellite sea-temperature data for its dive sites.
In the warm season (about 21°C) a 5mm suit is comfortable in Hamilton & Burlington; in the coldest months (about 3°C) step up to a drysuit.
Fin maps 17 sites in Hamilton & Burlington (10 scuba diving sites and 11 snorkelling spots, with some suited to both).
Across Hamilton & Burlington's dive sites, August are most often reported as the best months to visit.
The area has a well-documented freshwater fish community. Common Carp, Sun Perch, Lake Trout, Rainbow Trout, Round Goby, White Sucker, and Brown Bullhead are all very commonly observed. Walleye, Blue Gill, Freshwater Drum, and the European Eel are also regularly recorded across sites.
At least one site, Innerkip, is specifically rated for beginners and offers shore access to a shallow wreck. The site is designed to be accessible for those early in their diving experience. More capable divers will find additional variety across the broader site mix.
Shore entry is available at sites like Innerkip, meaning a boat is not always required. Several local operators serve the area, including Rec and Tek Scuba Inc. and Lake Ontario Waterkeeper, who can advise on site-specific access and conditions.
Wreck diving is represented in the site mix, with Innerkip being the named example in the area. The broader selection of sites covers both diving and snorkelling, giving visitors a range of experiences within the same region.
