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Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 22 September 2026

Today Tonight and Wednesday.

Wind east 10 knots veering to southeast 10 near noon then backing to northeast 10 early this evening. Wind increasing to east 15 near midnight then diminishing to southeast 10 early Wednesday morning.

Waves

Issued 10:30 AM EDT 22 September 2026
Today Tonight and Wednesday. Waves 0.5 metres.

Extended Forecast

Issued 03:00 AM EDT 22 September 2026
Thursday Wind south 15 knots.
Friday Wind south 15 knots diminishing to light.
Saturday Wind light.

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Map of Great Lakes - Lake Superior marine weather areas Royal Island Kenora Airport Sault Ste. Marie Airport Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Wawa Airport Thunder Bay Airport Welcome Island Little Flatland Island Slate Island - 45136 Lake Of the Woods - 45148
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buoy Buoy
land station Land Station
Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 22 September 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today quasi-stationary high 1032 mb located over
central Quebec.

Great Lakes - Lake Superior Area

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