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
Thu
5AM - 9AM
19 February 2026
NE 3–5 knots.
−6 to −3°C
NE 0.5m at 3s period
UV Index: 0 - Low
Cloudy
Thu
9AM - 1PM
19 February 2026
- Light and variable.
- Increasing from −3 to 1°C
- NE 0.4m at 2s period
- UV Index: 2 - Low
- Cloudy
Thu
1PM - 5PM
19 February 2026
- Light and variable.
- 0°C
- Calm sea
- UV Index: 0 - Low
- Cloudy