Block Island surf forecast from 22 Aug 2026:
- Most powerful swell: Monday 24 Aug, 8AM (local time) - 4ft (1.2m), 7s period, S swell with 134 kJ wave energy.
Best Forecast Surf Conditions for Block Island this week:
The most powerful waves expected at Block Island in the next 16 days are 1.2m 7s and forecast to arrive on Monday (Aug 24) 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 1.4m 6s period and expected on Friday (Aug 21) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Mon 24th Aug) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Block Island 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)
Nearest