Surf Forecasts:
Ontonagon surf forecast from 9 Jun 2026:
- Most powerful swell: Saturday 13 Jun, 8PM (local time) - 3.5ft (1.1m), 5s period, W swell with 64 kJ wave energy.
Best Forecast Surf Conditions for Ontonagon this week:
The most powerful waves expected at Ontonagon in the next 16 days are 1.1m 5s and forecast to arrive on Saturday (Jun 13) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Friday (Jun 12) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sat 13th Jun) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Ontonagon over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 39mm), heaviest during Thu night. Warm (max 24°C on Wed afternoon, min 14°C on Thu night). Winds increasing (calm on Tue morning, fresh winds from the WSW by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sat afternoon, min 10°C on Sat night). Winds decreasing (fresh winds from the W on Sat morning, calm by Sun night). | ||||||||||||||||||||
Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 5 | E 5 | E 3 | E 3 | E 4 | ESE 5 | WSW 6 | SW 5 | SW 6 | WSW 6 | NW 7 | WSW 6 | WSW 5 | W 6 | W 4 | W 3 | SW 4 | W 4 | — | — | — |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 1 | 2 | 0 | 24 | 9 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 17 | 5 | 0 | 11 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | off | off | cross-off | cross-off | glassy | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross | cross | off | cross-off | cross-on | on |
High Tide | |||||||||||||||||||||
Low Tide | |||||||||||||||||||||
 | |  |  |  |  | | |  | | | |  | | | | |  | | |  | |
 | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | — | 9:50 | — | — | 9:50 | — | — | 9:51 | — | — | 9:51 | — | — | 9:52 | — | — | 9:52 | — | — | 9:52 |
mm | — | — | — | — | 2 | 8 | — | — | 29 | — | — | — | — | — | — | — | — | — | — | — | 9 |
Temp °C | 18 | 19 | 19 | 23 | 24 | 23 | 21 | 23 | 16 | 14 | 15 | 15 | 13 | 17 | 16 | 14 | 16 | 17 | 15 | 14 | 14 |
Feels °C | 20 | 19 | 19 | 22 | 25 | 25 | 19 | 21 | 17 | 10 | 10 | 10 | 7 | 11 | 11 | 11 | 13 | 14 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | E 5 | E 5 | — | — | — | ESE 5 | — | — | W 6 | W 7 | NW 7 | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 1 | — | — | — | 9 | — | — | 1 | 1 | 2 | — | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | E 3 | E 3 | E 4 | SSW 4 | WSW 6 | SW 5 | SW 6 | WSW 6 | WSW 7 | WSW 6 | WSW 5 | W 6 | W 4 | W 3 | SW 4 | W 4 | — | — | — |
| kJ | — | — | 2 | 6 | 24 | 34 | 101 | 90 | 128 | 297 | 401 | 109 | 84 | 91 | 17 | 5 | 18 | 11 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1486 | 2840 | 1518 | 1721 | 25 | 1421 | 1423 | 1428 | 1431 | 1431 | 241 | 1436 | 1521 | 2508 | 1521 | 2014 | 2508 | 1931 | 1937 | 1573 | 1937 |
Best forecast wave conditions in Lake Superior | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
Information about the Ontonagon Surf forecast
The above surf forecast table for Ontonagon provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ontonagon can be found by selecting the local surf guide option on the grey menu. Our Ontonagon 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 (Ontonagon) 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 Ontonagon 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.
Ontonagon is 151 km (94 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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