About Lake Ontario Mariners Marina
We are a full service marina located in beautiful Henderson Harbor on the banks of Lake Ontario. Situated at the end of the Harbor we offer deep, protected dockage, with easy access to the renowned fishing of Lake Ontario.
Facilities
Electricity
Water
Showers
Toilets
Boatbuilder
HauloutCOORDINATES
43.85048 N, -76.21079 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m
Depth at MLW
3m+
Manoeuvrability
Fair
Channel Marking
Fair
Overseas Visitor Berths
Yes
Dock Type
Fixed
Style Side To
Yes
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
No
Weather Forecast
Wed
5AM - 9AM
20 May 2026
W 5–9 knots. Gusts up to 20 knots.
12 to 14°C
W 0.4m at 3s period
UV Index: 0 - Low
Cloudy
Wed
9AM - 1PM
20 May 2026
- W 9 knots increasing to 12 knots. Gusts up to 23 knots.
- 11 to 13°C
- W 0.5m at 3s period
- UV Index: 8 - Very High
- Cloudy
Wed
1PM - 5PM
20 May 2026
- W 12 knots. Gusts up to 22 knots.
- 11°C
- SW 0.5m at 3s period
- UV Index: 8 - Very High
- Partly cloudy