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Surf Forecasts:

Ontonagon surfForecast / Lake Superior / USA

information circle48hr Weather and Surf, issued 1 am Sunday 15 Mar 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Ontonagon surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ontonagon sea temperature is
0.2° C
 (Which is 1.5°C colder than average for this time of year)

How big are the waves at Ontonagon today?

The current surf forecast for Ontonagon at 7AM is: 0.9m 4s primary swell from a East-northeast direction (forecast issued at 01:00am March 15). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (15 Mar)5ft (1.6m)5s
Afternoon (15 Mar)11ft (3.5m)8s
Evening (15 Mar)13ft (4.0m)9s

Table - waves today at Ontonagon. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Sunday
15
Monday
16
Tuesday
17
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
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 (?)
0.4
SW
0.3
SE
0.5
E
1.3
ENE
2.3
ENE
3
ENE
3.5
ENE
4
NE
4
NE
4
NNE
4
NNE
4
NNE
4
N
3.5
N
3
NNW
2.5
NNW
2.4
NNW
2
NNW
1.6
NNW
1
NNW
0.6
NNW
0.4
NW
0.3
W
0.4
SW
Period(s) (?)4235689910988887776654333
Wave
Graph
(?)Metric surfscale
Energy kJ (?)005814481230211425112866263818412027160312419907115092991664812310
Wind
(km/h)
10
ESE
10
SE
15
ESE
25
ENE
35
NE
40
NE
45
NE
50
NNE
50
NNE
55
NNE
55
N
55
N
50
N
50
N
45
NNW
45
NNW
40
NNW
35
NNW
30
NNW
25
NNW
25
NNW
15
NW
15
WNW
0
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onononononononononcross-
on		cross-
on		cross-
on		cross-
on		crossglass
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
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
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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
n/a
n/a
n/a
n/a
Sunday
15
Monday
16
Tuesday
17
Sunrise----8:10-------8:07-------8:06---
Sunset-------8:01-------8:02-------8:05
cloud
cloud
cloud
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
light snow
cloud
cloud
cloud
cloud
cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C-3-2-2-2-1-1-1-4-5-6-8-10-10-11-10-9-9-10-10-11-11-10-9-10
Feels °C (?)-7-7-7-9-10-11-12-17-18-19-22-24-23-24-22-21-20-20-19-20-19-17-15-14
  • 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

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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 Ontonagon 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 Ontonagon at:
surf-forecast.com

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