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Grand Marias ratings
Quality on a good day: 3.0
Consistency of Surf: 1.5
Difficulty Level: 2.5
Wind and Kite Surfing: 3.0
Crowds: 4.5

Overall: 3.7

See all 18 ratings

Based on 2 votes. Vote


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Grand Marias Surf Forecast / Lake Superior / USA

12 Day Weather and Surf, issued 7 pm Friday 18 Jun 2021 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 12.6 °C (Statistics for 18 Jun 1981-2005 - mean: 6.1 max: 11.5 min: 2.9 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
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 12.6 °C (Statistics for 18 Jun 1981-2005 - mean: 6.1 max: 11.5 min: 2.9 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Lake Superior

  1. weather stationWind Update Continuing clean conditions at Grand Marias (light winds from the W at BUOY-GRMM4 11 km from Grand Marias).

    Grand Marias
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1 h 50 min ago

Light
9 km/h
W
Clean
Please reload the page to see if there are any updates.


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 Monday (Jun 21) at 8PM. The primary swell is predicted to be 2.0m and 7s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Grand Marias in the next 12 days are 2.3m 7s and forecast to arrive on Monday (Jun 21) 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 0.6m 4s period and expected on Thursday (Jun 24) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 21st Jun)6.5ft (2.0m) 7s
Best Surf11PM (Mon 21st Jun)5ft (1.6m) 7s
Most Powerful 2PM (Mon 21st Jun)7.5ft (2.3m) 7s

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

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wed
30
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
000000000200000000000000000000000000
T global atlantic.htsgw.metric.6.cc23
T global atlantic.htsgw.metric.24.cc23
T global atlantic.htsgw.metric.48.cc23
T global atlantic.htsgw.metric.72.cc23
T global atlantic.htsgw.metric.96.cc23
T global atlantic.htsgw.metric.120.cc23
T global atlantic.htsgw.metric.144.cc23
T global atlantic.htsgw.metric.168.cc23
T global atlantic.htsgw.metric.192.cc23
T global atlantic.htsgw.metric.216.cc23
T global atlantic.htsgw.metric.240.cc23
T global atlantic.htsgw.metric.264.cc23
T global atlantic.htsgw.metric.288.cc23
0.7
NW
0.6
NW
0.4
NW
0.2
WNW
0.1
W
0.2
ESE
0.4
NE
1.9
NW
2.2
NW
1.2
WNW
0.6
W
0.3
WNW
0.2
W
0.1
W
0.4
SSW
0.5
S
0.6
SSW
0.5
S
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
554332367654444444------------------
221761002293529110164100000000000000000000000
15

NW
15

NW
15

NW
10

WSW
5

SSE
15

ESE
5

NE
45

NW
30

NW
15

WSW
15

WSW
5

N
25

SSW
15

SW
5

SW
20

NNE
10

E
10

E
15

W
10

NW
10

NW
5

NNE
20

SSW
15

W
15

WSW
20

WNW
30

WNW
30

NNW
20

NW
15

WNW
10

NNW
5

NE
10

NNW
5

NW
10

NW
10

NNE
cross-
on
cross-
on
cross-
on
cross-
off
offcross-
off
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
glassoffcross-
off
glasscross-
on
crosscrosscrosscross-
on
cross-
on
onoffcross-
off
cross-
off
crosscross-
on
oncross-
on
cross-
on
onglassonglasscross-
on
cross-
on
n/a
n/a
n/a
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Note: the tide data above is . Surf properties and timing are calculated for Grand Marias.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Grand Marias blow from the S

Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wed
30
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
part cloudclearclearclearclearpart cloudmod rainlight rainclearclearpart cloudclearrain showerspart cloudpart cloudrain showerspart cloudpart cloudthunderstorm rain showerspart cloudpart cloudpart cloudmod rainrain showerscloudcloudcloudclearpart cloudpart cloudpart cloudclearpart cloudpart cloudclear
some cloudsclearclearclearclearsome cloudsmod. rainlight rainclearclearsome cloudsclearrain shwrssome cloudssome cloudsrain shwrssome cloudssome cloudsrisk thund- derrain shwrssome cloudssome cloudssome cloudsmod. rainrain shwrscloudycloudycloudyclearsome cloudssome cloudssome cloudsclearsome cloudssome cloudsclear
------101----1--22--92---71-----------
11910101616157991114131417161418181413122122191412101112121215141315
8810911161177891312131512111615131310151713121191011101114101114
107891616142569141213171613181814121121221913107910101214141315
-5:50--5:50--5:50--5:50--5:50--5:50--5:50--5:52--5:52--5:52--5:52--5:54-
--9:40--9:40--9:40--9:40--9:42--9:42--9:42--9:42--9:42--9:42--9:40--9:40

Short Range Forecast: Moderate rain (total 11mm), heaviest on Sun night. Very mild (max 16°C on Sun morning, min 7°C on Mon morning). Winds increasing (calm on Sat night, strong winds from the NW by Mon morning).

Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Wed night. Very mild (max 18°C on Thu afternoon, min 8°C on Mon night). Wind will be generally light.

Days 6-9 Weather Summary Moderate rain (total 19mm), heaviest on Sat afternoon. Warm (max 22°C on Sat afternoon, min 10°C on Fri night). Winds increasing (calm on Fri morning, fresh winds from the WNW by Sun afternoon).

Long Range Forecast: Mostly dry. Very mild (max 16°C on Wed night, min 9°C on Sun night). Winds decreasing (fresh winds from the NW on Sun night, calm by Tue morning).

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.