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Surf Forecasts:

Keweenaw Peninsula surfForecast / Lake Superior / USA

information circle12 Day Weather and Surf, issued 7 pm Sunday 19 Oct 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
13.4° C
 (Which is 6.1°C warmer than 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 Tuesday (Oct 21) at 11AM. The primary swell is predicted to be 3.0m and 8s period. 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 3.0m 8s and forecast to arrive on Tuesday (Oct 21) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Tuesday (Oct 21) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 21st Oct)10ft (3.0m) 8s
Best Surf11AM (Tue 21st Oct)10ft (3.0m) 8s
Most Powerful11AM (Tue 21st Oct)10ft (3.0m) 8s

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 Moderate rain (total 10mm), heaviest on Mon night. Very mild (max 14°C on Mon night, min 8°C on Wed morning). Mainly strong winds.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Wed night. Very mild (max 12°C on Sat afternoon, min 6°C on Thu morning). Winds decreasing (fresh winds from the NW on Wed night, light winds from the NE by Fri night).

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sun
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
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 (?)
0.7
NW
—
0.9
SE
3
SE
3
E
1.8
NE
1.7
N
1.6
N
1.4
NNW
1.5
NNW
1.6
NNW
1.3
NNW
0.8
NNW
0.4
NNW
0.2
NNW
0.2
N
0.4
SE
0.4
SE
———
Period(s) (?)4-4886665555442333---
Wave
Graph
(?)Metric surfscale
Energy kJ (?)160001207236187163103128140772051100000
Wind
(km/h)
20
NW
15
S
35
ESE
20
SSW
35
W
30
WSW
20
N
35
N
35
NW
35
NW
30
NW
35
NW
20
NW
15
WNW
15
NW
15
SE
20
SE
15
SE
20
S
20
SSE
20
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off		crossoffcross-
off		cross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
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
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
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sun
26
Sunrise-8:17--8:18--8:19--8:22--8:22--8:25--8:26-
Sunset--6:55--6:53--6:52--6:51--6:49--6:46--6:45
part cloud
cloud
cloud
light rain
light rain
cloud
light rain
light rain
cloud
light rain
cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
Rain (mm)
---51-22-3-----------
Temp. °C11101314101010888777667912111114
Feels °C (?)4756125000-2-1-101248769
  • 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 The wind is still cross-on at Keweenaw Peninsula (light winds from the NNW at BUOY-KP59 23 km from Keweenaw Peninsula). not gfswave

    1 hour 11 minutes ago Keweenaw Peninsula
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23 km away, 1 h 11 min ago

18 km/h
NNW
9.4
13.4
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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