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Surf Forecasts:

Marathon surfForecast / Lake Superior / Canada

information circle12 Day Weather and Surf, issued 7 pm Saturday 18 Oct 2025 EDT
Forecast 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
12.6° C
 (Which is 5.2°C warmer than normal for this time of year)
Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 10mm), heaviest on Tue morning. Very mild (max 12°C on Sat night, min 6°C on Sun night). Winds increasing (light winds from the S on Sat night, fresh winds from the SE by Mon night).

Days 3-6 Weather Summary Some drizzle, heaviest during Wed afternoon. Very mild (max 10°C on Tue night, min 4°C on Wed night). Wind will be generally light.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Sat
25
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)—————————————————————
Period(s) (?)---------------------
Wave
Graph
(?)Metric surfscale
Energy kJ (?)000000000000000000000
Wind
(km/h)
5
N
15
NNW
25
NW
15
WNW
5
SW
15
SE
30
SE
15
SSW
5
WSW
15
NNE
15
N
20
NNW
15
NNW
20
NW
25
NW
20
NNW
10
NW
10
NW
0
ENE
15
S
15
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		cross-
off		cross-
off		cross-
on		cross-
on		cross-
on		oncross-
on		offcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscross-
on		cross-
on
High Tide
/ height (m)
n/a
n/a
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n/a
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n/a
n/a
n/a
n/a
Low Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
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n/a
n/a
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n/a
n/a
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Sat
25
Sunrise-8:11--8:12--8:14--8:15--8:18--8:18--8:21-
Sunset--6:49--6:46--6:45--6:44--6:42--6:39--6:37
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
part cloud
cloud
cloud
light rain
cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
Rain (mm)
------28---1---------
Temp. °C1210121081012111110866565475810
Feels °C (?)10765565888511-10-1-13246
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Lake Superior

  1. weather stationWind Update Continuing clean conditions at Marathon (light winds from the S at Pukaskwa Park Airport 24 km from Marathon). not gfswave

    1 hour 39 minutes ago Marathon
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24 km away, 1 h 39 min ago

6 km/h
S
9.0
12.6
Air / Water (°C)
Please reload the page to see if there are any updates.

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.

View detailed surf forecast for Marathon at:
surf-forecast.com

Information about the Marathon Surf forecast

The above surf forecast table for Marathon provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Marathon can be found by selecting the local surf guide option on the grey menu. Our Marathon surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Marathon) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Marathon may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Lake Superior - Canada? If you are looking for accommodation near Marathon, camping, hotels and holiday cottages in Lake Superior - Canada, consider staying in Michipicoten Harbour which is 149 km (93 miles) away.

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