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Marathon Surf Forecast
/ Lake Superior (2 breaks) / Ontario (21 breaks) /
Surf Forecasts:
Marathon surfForecast / Lake Superior / Canada
48hr Weather and Surf, issued 7 pm Thursday 23 Apr 2026 EDTForecast update in hr min s Forecast update imminent
Marathon surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marathon sea temperature is
1.2° C
(Which is slightly cooler than normal)Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Fri afternoon. Very mild (max 11°C on Thu night, min 3°C on Sat night). Winds decreasing (fresh winds from the E on Thu night, calm by Fri night). | ||||||||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | on | glassy | glassy | glassy | glassy | off | cross-on | cross | glassy | cross-on | on | glassy | glassy | glassy | glassy | cross-on | on | |
High Tide | ||||||||||||||||||||||||
Low Tide | ||||||||||||||||||||||||
 | |  |  | |  | |  | | | |  | | | | | | | | | | | | | |
 | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:35 | — | — | — |
 | — | 8:49 | — | — | — | — | — | — | — | 8:50 | — | — | — | — | — | — | — | 8:52 | — | — | — | — | — | 8:52 |
— | — | — | — | — | — | — | 2 | 5 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 11 | 8 | 7 | 7 | 7 | 8 | 6 | 7 | 7 | 6 | 5 | 5 | 5 | 6 | 7 | 8 | 6 | 4 | 3 | 3 | 3 | 7 | 7 |
10 | 5 | 1 | 1 | 1 | 1 | 3 | 3 | 6 | 6 | 4 | 3 | 3 | 2 | 3 | 5 | 6 | 4 | 2 | 1 | 1 | 1 | 5 | 3 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
 kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 312 | 290 | 312 | 290 | 290 | 1424 | 1718 | 1718 | 1759 | 312 | 290 | 290 | 1718 | 1754 | 1718 | 2012 | 1524 | 1371 | 703 | 1371 | 1371 | 1399 | 1399 | 1744 |
Best forecast wave conditions in Lake Superior - Canada | ||||||||||||||||||||||||
Best forecast wave conditions in Canada | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marathon surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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