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Ontonagon Surf Forecast
/ Lake Superior (10 breaks) / Michigan (11 breaks) /
Surf Forecasts:
Ontonagon surfForecast / Lake Superior / USA
48hr Weather and Surf, issued 1 am Sunday 29 Mar 2026 EDTForecast 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
0.5° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Ontonagon today?
The current surf forecast for Ontonagon at 8AM is: 0.4m 3s primary swell from a Northeast direction (forecast issued at 01:00am March 29). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Mar) | 1.5ft (0.5m) | 3s |
| Afternoon (29 Mar) | 2ft (0.6m) | 4s |
| Evening (29 Mar) | 2.5ft (0.7m) | 4s |
Table - waves today at Ontonagon. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 29 | Monday 30 | Tuesday 31 | ||||||||||||||||||||||
| 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 0 | 0 | 1 | 3 | 7 | 8 | 16 | 17 | 13 | 9 | 6 | 1 | 3 | 5 | 16 | 50 | 106 | 146 | 242 | 325 | 394 | 376 | 305 | 82 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | cross- off | glass | on | glass | cross- on | cross | cross- on | cross- on | cross | cross- on | cross | cross | cross | cross | cross | cross- on | cross | on | 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 | 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 | n/a n/a | n/a n/a | n/a n/a |
Sunday 29 | Monday 30 | Tuesday 31 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:43 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - | 7:39 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:21 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:23 |
 | | |  | | | | |  |  | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 0 | -2 | -2 | -2 | 2 | 6 | 8 | 3 | 1 | 0 | -1 | -1 | 0 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 0 |
| Feels °C (?) | -6 | -7 | -6 | -6 | -2 | 3 | 6 | -1 | -2 | -4 | -4 | -5 | -5 | -5 | -5 | -6 | -6 | -6 | -4 | -6 | -3 | -4 | -2 | -5 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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