Grand Marias Surf Break

Lat Long: 46.67° N 86.11° W

Grand Marias WaveFinder

Issued: 1 am 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Grand Marias sea temperature is
9.3° C
1.7° 

Grand Marias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Grand Marias surf forecast from 14 Jul 2026:

  • Best quality surf: Tuesday 14 Jul, 8PM (local time) - 3ft (0.9m), 6s period, WNW swell with glassy winds.
  • Most powerful swell: Tuesday 14 Jul, 8AM (local time) - 7ft (2.2m), 7s period, W swell with 520 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 14 Jul, 8PM (local time) - 3ft (0.9m), 6s period with WNW swell.

Best Forecast Surf Conditions for Grand Marias this week:

The surf forecast for Grand Marias over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 14) at 8PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Grand Marias in the next 16 days are 2.2m 7s and forecast to arrive on Tuesday (Jul 14) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (Jul 17) at 5PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 14th Jul)3ft (0.9m) 6s
Best Surf 8PM (Tue 14th Jul)3ft (0.9m) 6s
Most Powerful 8AM (Tue 14th Jul)7ft (2.2m) 7s

Table - best surf conditions forecast for Grand Marias over the next 16 days.


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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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