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Surf Forecasts:

Grand Marias surfForecast / Lake Superior / USA

information circle48hr Weather and Surf, issued 1 pm Wednesday 15 Oct 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Grand Marias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grand Marias sea temperature is
14.3° C
 (Which is 4.8°C warmer than normal for this time of year)
Time (EDT) & DateWave HeightWave Period
Morning (15 Oct)1ft (0.3m)4s
Afternoon (15 Oct)--
Evening (15 Oct)0.5ft (0.2m)3s

Table - waves today at Grand Marias. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Wednesday
15
Thursday
16
Friday
17
Saturday
18
11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM
Rating
(10 max)
0
0
0
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 (?)
0.2
NNW
——
0.2
WNW
——————
0.2
SSE
0.4
SE
0.8
SSE
1.1
SSE
1.4
SSE
1.6
S
1.8
S
2
S
2.2
S
2.3
S
2.3
S
2.1
S
1.9
S
1.6
S
Period(s) (?)4--2------23455666777766
Wave
Graph
(?)Metric surfscale
Energy kJ (?)100100000000000000000000
Wind
(km/h)
5
N
10
NW
15
NNW
10
NNW
10
NNW
10
NNW
5
N
5
E
5
SSE
0
E
10
ESE
15
S
15
S
20
SE
30
SSE
30
SSE
35
S
35
S
40
S
40
S
35
S
35
S
30
S
30
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		cross-
on		oncross-
on		cross-
on		onglassoffglasscross-
off		offoffcross-
off		cross-
off		offoffoffoffoffoffoffoffoff
High Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunrise--------8:02-------8:03-------
Sunset--6:58-------6:55-------6:53-----
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
cloud
cloud
cloud
part cloud
cloud
light rain
rain showers
rain showers
Rain (mm)
-------------541-----311
Temp. °C111212101010101011141413111011111216171618161616
Feels °C (?)9986788891211986656910912101112
  • 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 The wind is still cross-on at Grand Marias (light winds from the NW at BUOY-GRMM4 11 km from Grand Marias). not gfswave

    1 hour 10 minutes ago Grand Marias
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1 h 10 min ago

17 km/h
NW
Cross-On
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 Grand Marias 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 Grand Marias at:
surf-forecast.com

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