Surf Forecast Surf Report
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Surf Forecasts

Keweenaw Peninsula surfForecast / Lake Superior / USA

information circle12 Day Weather and Surf, issued 7 am Tuesday 15 Apr 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Keweenaw Peninsula surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keweenaw Peninsula sea temperature is
2.0° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Keweenaw Peninsula this week:

The surf forecast for Keweenaw Peninsula over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Apr 18) at 8AM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 0.9m and 4s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Keweenaw Peninsula in the next 12 days are 2.0m 6s and forecast to arrive on Tuesday (Apr 15) 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 2.4m 8s period and expected on Thursday (Apr 17) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 18th Apr)4ft (1.2m) 7s
Best Surf 8AM (Fri 18th Apr)4ft (1.2m) 7s
Most Powerful 2PM (Tue 15th Apr)6.5ft (2.0m) 6s

Table - best surf conditions forecast for Keweenaw Peninsula over the next 12 days.

Hourly12 Days
Lake Superior Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
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 (?)
2.2
NNW
1.7
NNW
1.3
NNW
0.5
N
0.1
N
0.3
SSE
1.4
SE
2.2
SE
2.1
SE
1.2
NNE
0.7
ESE
1.1
N
0.9
NNW
0.6
WNW
0.7
WSW
0.8
SSW
0.8
SSE
0.9
SE
——————————————————
Period(s) (?)665432678565444445------------------
Wave
Graph
(?)Metric surfscale
Energy (?)381184947000005941562580000000000000000000000
Wind
(km/h)
40
NNW
35
NW
30
NNW
15
NNW
5
WNW
15
SE
25
SE
30
SE
25
SSE
20
SSE
40
W
40
W
40
W
30
W
10
N
5
WNW
5
N
15
SSE
5
SE
20
E
15
ESE
10
ESE
15
E
15
SE
20
WSW
30
WSW
25
WSW
25
W
25
WSW
5
W
20
ESE
20
ESE
20
S
10
SE
15
E
15
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		glasscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		glasscross-
on		cross-
off		glasscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscrosscrosscross-
off		cross-
off		cross-
on		on
High Tide
/ height (m)
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Low Tide
/ height (m)
n/a
n/a
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Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunrise7:03--7:03--7:01--6:58--6:56--6:54--6:52--6:52--6:50--6:48--6:46--6:45--
Sunset-8:40--8:43--8:44--8:45--8:46--8:47--8:50--8:51--8:52--8:53--8:54--8:57-
cloudpart cloudpart cloudclearclearpart cloudpart cloudpart cloudmod rainlight rainmod rainpart cloudpart cloudpart cloudpart cloudclearclearclearpart cloudpart cloudpart cloudpart cloudclearpart cloudpart cloudcloudpart cloudclearclearclearclearcloudcloudcloudlight rainpart cloud
Rain (mm)
--------917-----------------------1-
Temp. °C03300149810105244233775777967457687755
Feels °C (?)-12-6-5-7-5-3-31165-6-8-4-1-1-1-253-13224-2-1-3-21021411

Short Range Forecast: Light rain (total 9mm), mostly falling on Thu night. Icy conditions (max 9°C on Thu afternoon, min 0°C on Tue morning). Winds decreasing (strong winds from the NNW on Tue morning, calm by Wed afternoon).

Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Fri afternoon. Very mild (max 10°C on Fri morning, min 2°C on Sat morning). Winds decreasing (strong winds from the WNW on Fri night, calm by Sun morning).

Days 6-9 Weather Summary Mostly dry. Mild temperatures (max 9°C on Wed morning, min 3°C on Mon morning). Winds increasing (calm on Mon morning, fresh winds from the WSW by Wed night).

Long Range Forecast: Some drizzle, heaviest during Sat afternoon. Mild temperatures (max 8°C on Fri afternoon, min 3°C on Sun morning). Mainly fresh winds.

  • 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>
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View detailed surf forecast for Keweenaw Peninsula at:
surf-forecast.com

Information about the Keweenaw Peninsula Surf forecast

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

Keweenaw Peninsula is 118 km (73 miles) from the city of 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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