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Surf Forecasts:

Keweenaw Peninsula surfForecast / Lake Superior / USA

information circle12 Day Weather and Surf, issued 1 am Thursday 04 Sep 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
16.6° C
 (Which is 2.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Keweenaw Peninsula this week:

The most powerful waves expected at Keweenaw Peninsula in the next 12 days are 1.8m 6s and forecast to arrive on Thursday (Sep 04) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Thursday (Sep 04) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Thu 4th Sep)6ft (1.8m) 6s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 9mm), mostly falling on Thu morning. Very mild (max 15°C on Thu night, min 9°C on Fri morning). Winds increasing (light winds from the NNW on Thu night, strong winds from the WNW by Fri night).

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Tue afternoon. Very mild (max 17°C on Mon afternoon, min 11°C on Sun morning). Mainly strong winds.

Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
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 (?)
1.7
WNW
1.5
W
0.4
SW
0.9
WNW
1.1
WNW
1.2
WNW
0.9
NW
0.6
NW
0.7
NNW
0.6
NW
0.4
WNW
0.5
W
0.4
SW
0.6
SSW
0.7
SSW
0.7
SSW
0.6
SSW
0.4
SSE
———
Period(s) (?)666455444434444554---
Wave
Graph
(?)Metric surfscale
Energy (?)000320692711131140000000000
Wind
(km/h)
40
WNW
40
WSW
15
WSW
35
WNW
40
WNW
40
WNW
35
WNW
25
NW
25
NNW
25
NW
15
W
25
SW
30
WSW
20
WSW
20
SSW
25
SW
15
WSW
40
NE
30
ENE
20
NE
25
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off		cross-
off		crosscrosscrosscrosscross-
on		cross-
on		cross-
on		cross-
off		cross-
off		cross-
off		cross-
off		offoffcross-
off		cross-
on		cross-
on		cross-
on		cross-
on
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
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
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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
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Sunrise7:13--7:16--7:16--7:18--7:20--7:20--7:22--
Sunset-8:27--8:24--8:22--8:21--8:19--8:16--8:15-
light rain
part cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
part cloud
clear
clear
clear
Rain (mm)
1-21131---------4----
Temp. °C111415101111111313111415161717171717121114
Feels °C (?)258222377699111314131416569
  • 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 Onshore wind has changed to cross-on at Keweenaw Peninsula (moderate winds from the NNW at BUOY-KP59 22 km from Keweenaw Peninsula). not gfswave

    53 minutes ago Keweenaw Peninsula
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22 km away, 53 min ago

28 km/h
NNW
10.6
16.6
Air / Water (°C)
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 Keweenaw Peninsula 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 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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