Grumari surf forecast from 17 Oct 2026:
- Best quality surf: Monday 19 Oct, 9PM (local time) - 6.5ft (2.0m), 11s period, SSW swell with glassy winds.
- Most powerful swell: Monday 19 Oct, 12AM (local time) - 7.5ft (2.3m), 12s period, SSW swell with 1,556 kJ wave energy.
- Next surfable swell (1★+): Sunday 18 Oct, 12AM (local time) - 3.5ft (1.1m), 9s period with SE swell.
Best Forecast Surf Conditions for Grumari this week:
The surf forecast for Grumari over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 18) at 12AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 1.0m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Grumari in the next 16 days are 2.3m 12s and forecast to arrive on Monday (Oct 19) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Oct 22) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 18th Oct) | 3.5ft (1.1m) 9s |
| Best Surf | 9PM (Mon 19th Oct) | 6.5ft (2.0m) 11s |
| Most Powerful | 12AM (Mon 19th Oct) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Grumari over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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