Block Island 5-Day Forecast Summary
Here's how the next 5 days are shaping up at Block Island, Rhode Island. Each day is rated based on breaking wave height, swell period, and wind — updated hourly from the latest NOAA GFS run.
Sat, May 16: 2–3ft, 9s period, rated Poor - Fair. Early morning is your best window — 2-3ft waves on SE swell at 9s with glassy conditions. Wind fills in through the day, pushing up to 17mph from the SSW and dropping conditions to poor.
Sun, May 17: 4–5ft, 7s period, rated Poor - Fair. First light looks cleanest — 4-5ft on ESE swell at 8s with 11mph WSW winds. Things get a bit scrappier as the day goes on.
Mon, May 18: 2–3ft, 7s period, rated Poor - Fair. Morning kicks off with 3-4ft on S swell at 7s.
Tue, May 19: 2–3ft, 9s period, rated Poor. The sweet spot is around midday — 2-3ft waves, 10mph from the SW, poor - fair conditions. Morning is a bit bumpy but things clean up by late morning. Don't wait too long — the wind comes back up after lunch.
Wed, May 20: 3–4ft, 6s period, rated Poor. Early morning is your best window — 4-5ft waves on SSE swell at 14s with moderate SW wind around 10mph. The SSW wind kicks in by afternoon — 17mph and poor by then.