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Grand Marias location map

Grand Marias surf Forecast / Lake Superior / USA

12 Day Weather and Surf, issued 1 am Saturday 20 Apr 2024 EDT
Forecast update in  hr  min  s 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 2.2°C (Statistics for 20 Apr 1981-2005 - mean: 2.1 °C max: 2.9 °C min: 1.4 °C)
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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 2.2°C (Statistics for 20 Apr 1981-2005 - mean: 2.1 °C max: 2.9 °C min: 1.4 °C)

Best Forecast Surf Conditions for Grand Marias this week:

The surf forecast for Grand Marias over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Apr 20) at 8PM. The primary swell is predicted to be 2.0m and 7s period with a secondary swell of 0.1m and 8s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Grand Marias in the next 12 days are 2.5m 8s and forecast to arrive on Saturday (Apr 20) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Tuesday (Apr 23) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 20th Apr)6.5ft (2.0m) 7s
Best Surf11PM (Sat 20th Apr)6ft (1.9m) 7s
Most Powerful 2PM (Sat 20th Apr)8ft (2.5m) 8s

Table - best surf conditions forecast for Grand Marias over the next 12 days.

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Quick surf report for Grand Marias:

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Hourly12 Days
Lake Superior Surf
Print Surf Table
Updates in  hr  min  s Update imminent 
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
2
0
0
0
0
0
0
0
0
0
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 (?)
2.5
NW
2.4
WNW
1.8
W
2
WNW
1.7
NW
0.9
NNW
0.2
NNW
0.1
W
1
SE
1.3
E
1.1
NE
1.3
NNE
1
N
0.8
NNW
0.6
WNW
0.1
W
0.5
S
0.8
SSE
——————————————————
Period(s) (?)887776455555554344------------------
Wave
Graph
(?)Metric surfscale
Energy (?)76362029436225548200905594472512000000000000000000000
Wind
(km/h)
35
WNW
30
WNW
25
WSW
30
WNW
20
NW
10
S
20
WSW
10
SW
20
S
30
W
45
NNE
40
NNE
30
N
30
NNW
25
N
15
NNE
10
NNW
10
SSW
10
ESE
15
E
20
SE
30
SE
25
SE
15
S
15
SE
20
SSE
10
SSW
30
S
25
SSW
25
WSW
30
W
35
WNW
25
NW
10
WNW
10
NW
10
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
off		cross-
on		cross-
on		offcross-
off		cross-
off		offcrossonononcross-
on		ononcross-
on		offcross-
off		crosscross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		offoffcross-
off		cross-
off		crosscrosscross-
on		crosscross-
on		off
High Tide
/ height (m)
n/a
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Low Tide
/ height (m)
n/a
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Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
01
Sunrise6:47--6:45--6:43--6:41--6:39--6:37--6:35--6:35--6:33--6:31--6:30--6:28--
Sunset-8:39--8:40--8:42--8:44--8:45--8:45--8:47--8:49--8:50--8:52--8:52--8:53-
cloudpart cloudpart cloudpart cloudclearpart cloudclearpart cloudmod rainrain showerscloudcloudpart cloudpart cloudclearclearclearclearclearclearclearcloudlight raincloudlight rainrain showersrain showerspart cloudclearrain showerslight raincloudcloudpart cloudclearclear
Rain (mm)
--------61------------2-145--12-----
Temp. °C34444381311920-403243688767101816151914666698
Feels °C (?)-6-4-3-4-4-12964-6-12-13-9-5-4-1-11330-24717141114111-1-2266

Short Range Forecast: Light rain (total 6mm), mostly falling on Mon night. Very mild (max 13°C on Mon afternoon, min 2°C on Sat morning). Winds decreasing (fresh winds from the WNW on Sat morning, calm by Sun night).

Days 3-6 Weather Summary Some drizzle, heaviest during Tue morning. Icy conditions (max 9°C on Tue morning, min -5°C on Wed morning). Winds decreasing (strong winds from the NNE on Tue night, calm by Thu night).

Days 6-9 Weather Summary Moderate rain (total 12mm), heaviest on Sun night. Very mild (max 18°C on Sun afternoon, min 2°C on Fri morning). Winds increasing (light winds from the SE on Fri morning, fresh winds from the SE by Sat afternoon).

Long Range Forecast: Light rain (total 3mm), mostly falling on Mon night. Very mild (max 19°C on Mon afternoon, min 4°C on Tue night). Winds decreasing (fresh winds from the WNW on Tue afternoon, calm by Wed night).

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.


Information about the Grand Marias Surf forecast

The above surf forecast table for Grand Marias provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Grand Marias can be found by selecting the local surf guide option on the grey menu. Our Grand Marias 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 (Grand Marias) 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 Grand Marias 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.

Grand Marias is 100 km (62 miles) from Marquette. If you plan a vacation in Lake Superior, look for hotels and other accommodation in Marquette. Marquette has rooms for a wide range of budgets as well as car hire and transport links.

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