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Surf Forecasts:

Grand Marias surfForecast / Lake Superior / USA

information circle48hr Weather and Surf, issued 7 am Sunday 31 Aug 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
16.2° C
 (Which is normal for this time of year)
Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
31
Monday
01
Tuesday
02
Wed
03
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 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
SSE
0.2
S
0.3
SSW
0.3
SSW
0.3
SSW
0.2
SSW
——
0.3
S
0.3
SSW
0.3
SSW
0.4
SW
0.2
SSW
0.2
SSW
—
0.3
SSE
0.6
S
Period(s) (?)-------233333--333333-34
Wave
Graph
(?)Metric surfscale
Energy (?)000000000000000000000000
Wind
(km/h)
10
SSW
10
SSW
5
SW
0
NNE
10
E
15
ESE
10
SSW
15
S
15
S
15
S
15
SSW
5
SW
5
E
10
SSE
10
SSW
15
S
15
SSW
15
SSW
15
SW
10
W
10
ESE
20
S
25
S
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		glasscrosscross-
off		offoffoffoffoffcross-
off		crosscross-
off		offoffoffcross-
off		cross-
off		crosscross-
off		offoffoff
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
Sunday
31
Monday
01
Tuesday
02
Wed
03
Sunrise-7:01-------7:03-------7:03------
Sunset-----8:25-------8:23-------8:22--
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
------------------------
Temp. °C151519212220171616162124232118161616202222211817
Feels °C (?)131318212119161414142023232017141414182121191515
  • 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 Grand Marias (light winds from the SSW at BUOY-GRMM4 11 km from Grand Marias). not gfswave

    1 hour 14 minutes ago Grand Marias
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1 h 14 min ago

8 km/h
SSW
Clean
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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