Charlottetown, PEI tide times

Mean tidal range at Charlottetown is approximately 1.2 metres; spring range reaches around 1.5 metres. The tide is semidiurnal — two highs and two lows each day. The Hillsborough River estuary is tidal several kilometres upstream; the twice-daily flush drives the water renewal that sustains oyster and mussel beds in the surrounding bays. At low water in Charlottetown Harbour, the intertidal flats below Victoria Park are exposed — red sand and tidal mud accessible on foot for clamming and shorebird watching. At high water the flats are submerged and the harbour is at its fullest. The tidal range here is modest compared to the Bay of Fundy 250 kilometres west, but sufficient to drive the aquaculture productivity PEI is known for.

The Charlottetown Conference of 1–9 September 1864 was the first meeting of the Fathers of Confederation — colonial politicians from the Province of Canada (Ontario and Quebec), New Brunswick, Nova Scotia, and PEI who assembled to discuss a political union of British North America. The meeting in Province House on Great George Street laid the groundwork for the Quebec Resolutions (October 1864) and ultimately for the British North America Act (1867) that created Canada. Province House is preserved as a national historic site; the Confederation Chamber where the meetings were held has been restored to its 1864 appearance. Charlottetown has been called the 'Birthplace of Confederation' ever since.

The Gulf of St. Lawrence is a shallow, semi-enclosed sea — average depth around 60 metres — that absorbs solar heat through the summer without the deep cold-water mixing that cools open Atlantic coastal locations. By late July and August, Northumberland Strait water temperatures around Charlottetown reach 19 to 21°C, occasionally higher in shallow embayments. This makes PEI waters warmest for swimming north of Virginia on the east coast. The same warming effect supports the island's mussel and oyster aquaculture by extending the productive growth season. The downside is that the Gulf is also more vulnerable to summer algal blooms when nutrient loading from agricultural runoff combines with warm, calm conditions.

Malpeque oysters (Crassostrea virginica, Eastern oyster) are grown on lease sites in Malpeque Bay and surrounding Gulf of St. Lawrence estuaries on PEI's northwest coast. The name has become a quality designation — Malpeque oysters are typically briny, firm, and copper-finished from the clean tidal flow through their growing environment. Tidal flushing is the mechanism: each tidal cycle brings phytoplankton-rich water across the oyster beds, the oysters filter-feed, and the nutrient-laden ebb carries waste away. Hand harvesting is required under PEI aquaculture regulations for the premium category. Charlottetown restaurants serve them year-round; the PEI International Shellfish Festival (September, Charlottetown) is the showcase event.

No. The predictions shown here come from Open-Meteo Marine, a global ocean model with typical accuracy of plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height. They are appropriate for planning waterfront walks, timing low-tide flat access, or understanding the tidal cycle in the estuary — not for vessel navigation, harbour entry, or any safety-critical decision. For authoritative official Canadian predictions, use Fisheries and Oceans Canada (DFO) at tides.gc.ca. The DFO publishes verified gauge-based predictions for Charlottetown Harbour. Ice conditions in Northumberland Strait in winter also affect navigation beyond what tide tables address.