Is Brockville & the St. Lawrence River good for beginner divers?

Yes, partly: 4 of the 11 dive sites we document are suited to Open Water divers, including Prescott Scuba Park, Centeen Park Underwater Sculpture Park and Conestoga. The others need more experience or a higher certification.

What is the water temperature in Brockville & the St. Lawrence River?

The water is usually between 4 °C and 25 °C over the year.

What marine life can you see in Brockville & the St. Lawrence River?

Divers regularly see freshwater fish.

Brockville & the St. Lawrence River

Diving in Canada

11 documented dive sites, 4 of them for Open Water divers.

Best months: Jul–Sep
Water: 4–25 °C
Levels: Open Water, Advanced
Nearest airport: YGK
One dive: €38–151

When to go

Pick a month: the diving season, from published sources, and the typical weather.

Pick a month

Best
Good
Possible
Closed
Not documented yet

Brockville & the St. Lawrence River in November

Possible

Air: 7 °C; 1 °C at night
Rain: 80 mm; one of the driest months
Wind: 13 km/h; on average

The windiest month.

Typical weather, not a forecast: averages for 2021–2025 (air, rain, wind), data from Open-Meteo (ERA5 / Copernicus, Météo-France). Covers an area of roughly 10 to 25 km around the destination.

Compare with another destination

Best Jul–Sep: warmest water mid-July to mid-September; visibility is often best May–June and in early fall. Dive Brockville runs charters April–December and training May–September.

Source: padi.com

Dive sites in Brockville & the St. Lawrence River

From the easiest to the most demanding. Levels with a dashed outline are estimates we are still verifying.

Open Water friendly

usual dive down to 18 m4 sites

Wreck

down to 13 m

Prescott Scuba Park

A Prescott shore site with a ramped entry, training platforms and stairs, three submerged anchors and the sunken dinghy S.S. Prescott.

Open Water

Artificial reef

down to 18 m

Centeen Park Underwater Sculpture Park

Open Water

Wreck

down to 9 m

Conestoga

An American freighter that burned in the Galop Canal in 1922, south of Cardinal, with the top of her steeple engine still above the water.

Open Water

Wreck

down to 11 m

Rothesay

Open Water

For Advanced divers

usual dive down to 30 m7 sites

Wreck

down to 21 m

Robert Gaskin

An 1863 barge about 400 ft off shore at Brockville, 15-21 m deep, where divers can pass through the hold and exit via the stern hole.

Advanced

Wreck

down to 30 m

Lillie Parsons

An upside-down 1868 schooner against Sparrow Island, finished with a quick drift along the island's walls.

Advanced

Drift

down to 30 m

Brockville Wall

Underwater walls just east of downtown Brockville, between the Muskie and the Gaskin, with a slow drift or a fast ride down the river.

Advanced

Wreck

down to 36 m

Keystorm

A 1908 steel steamer on her starboard side, bow at 6 m and stern at 35 m, so divers choose their depth; run from Brockville (passport needed).

Advanced

Wreck

down to 28 m

Kinghorn

An 1890s schooner-barge at 28 m off Rockport with an intact ship's wheel, bilge pumps and a pot-bellied stove.

Advanced

Wreck

down to 30 m

Muscallonge (Muskie)

The burnt-out tug Muskie just east of downtown Brockville, with her boiler, winches and engine to see and a popular spot for local fish.

Advanced

Wreck

down to 29 m

Henry C. Daryaw

Advanced

Marine life

When the big encounters happen, month by month.

Reported here, season not documented yet:

Freshwater fish

What diving costs here

Here a dive costs between €38 and €151, a try dive €192 and an Open Water course €555, depending on the dive centres we checked.

One dive (certified diver)packages counted per dive: €38–1512 centres
Try dive: €1921 centre
Open Water course: €5551 centre
Gear rentalper day or per dive, by centre: €961 centre

The cheapest and the most expensive of the dive centres we checked, from the prices on their own websites in October 2026. Prices change: confirm with the centre before booking.

Converted to euros at the ECB reference rate of 30 October 2026; for currencies the ECB does not publish, the official rate of the country's central bank.

Sources (4)

Where is Brockville & the St. Lawrence River?

View on OpenStreetMapLocation: Brockville (Wikipedia)Map: Natural Earth

Nearest airport: YGK

Brockville & the St. Lawrence River: frequently asked questions

When is the best time to dive Brockville & the St. Lawrence River?: The best months to dive Brockville & the St. Lawrence River are Jul–Sep. Best Jul–Sep: warmest water mid-July to mid-September; visibility is often best May–June and in early fall. Dive Brockville runs charters April–December and training May–September.
Is Brockville & the St. Lawrence River good for beginner divers?: Yes, partly: 4 of the 11 dive sites we document are suited to Open Water divers, including Prescott Scuba Park, Centeen Park Underwater Sculpture Park and Conestoga. The others need more experience or a higher certification.
What is the water temperature in Brockville & the St. Lawrence River?: The water is usually between 4 °C and 25 °C over the year.
What marine life can you see in Brockville & the St. Lawrence River?: Divers regularly see freshwater fish.
How do you dive Brockville & the St. Lawrence River?: The nearest airport is YGK.

About this page

Seasons and marine life come from the sources below. Site levels and depths marked as estimated come from our original catalogue and are being checked one by one. Conditions change: always confirm with a local dive centre.

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Photo: Sarah Lee on Unsplash

Photo credits

Sunlight and bubbles in deep blue water, Sarah Lee, Unsplash License, on Unsplash