All Environment Canada weather offices offer a 24 hour-a-day automated telephone service that provides the most recent forecast information.

Their locations include:

Peterborough 705-743-5852
Collingwood 705-446-0711

Marine weather forecasts are sometimes included in these messages during the navigation season.

Current weather

Wind, water and weather combine to test your skill as a boater. Checking the latest marine weather forecast for your area should always be a priority before heading out on the water.

Southern area

Kawartha area

Northern area



Marine Weather Warnings

Type of criteria

Small Craft Warning:
Included in a near shore forecast if winds are forecast to be in the range of 40 to 60 km/hr inclusive or if the possibility of thunderstorms is greater than 50%.
Gale Warning:
Issued if winds are forecast to be in the range of 61 to 87 km/hr inclusive.
Storm Warning:
Issued if winds are forecast to be in the range of 88 to 117 km/hr inclusive.
Hurricane Force Wind Warning:
Issued if winds are forecast to be 118 km/hr or greater.

Radio station weather broadcasts

Many commercial FM and AM radio stations along the Trent–Severn Waterway broadcast marine weather forecasts during the navigation season.

Weatheradio Canada is operated by Environment Canada and transmits over three dedicated VHF-FM bands: 162.400 MHz, 162.475 MHz and 162.550 MHz.

Canadian Coast Guard radio stations broadcast on VHF frequencies 161.65 MHz and 161.775 MHz (ch.21B, ch.83B). They also broadcast information on aids to navigation.


Lake Simcoe and Lake Couchiching

Sudden storms are frequent on lakes Simcoe and Couchiching. Every possible caution should be observed before heading out on these two lakes.