Surf Forecasts:
Block Island surf forecast from 22 Aug 2026:
- Most powerful swell: Monday 24 Aug, 11AM (local time) - 4ft (1.2m), 7s period, S swell with 131 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 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Saturday (Aug 22) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Mon 24th Aug) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. I've scoured the charts for Block Island and I've got to be straight with you: it's looking bleak. This is one of those long, flat spells where the ocean just goes to sleep. We’re looking at a solid sixteen days with absolutely nothing worth paddling out for. The first record of anything surfable is on August 22nd, and it's all downhill from there.
Right out of the gate on Saturday the 22nd, we've got a tiny 1-foot ESE windswell with a short 8 second period. The wind is a cross-off from the northeast at 12 mph, so the surface might look clean, but there's virtually no energy (20). It's a skip-day. Sunday and Monday don't get any better, with the swell staying under 4 feet and winds turning onshore or cross-shore, churning up the tiny waves into a messy, choppy mess. The combined energy barely cracks moderate on Monday hitting 155, but with a short period and poor winds, it's not surf.
The whole first week is a washout. We see lots of clear skies but relentless onshore and cross-shore winds from the south and southwest. The swell is either too small, too short-period, or completely disorganized. Come Wednesday the 4th of September there’s a brief moment of glassy conditions in the morning, but with a pathetic 2-foot SSW windswell and 41 units of energy, you'd be better off buying a coffee.
The second week is more of the same emptiness. The combined swell energy dips as low as 8 on the 5th of September. That's not even a ripple; that's a lake. Even when the wind does swing offshore from the northwest on the 1st and 3rd of September, cleaning up the surface, the swell is a measly 1.5 feet with moderate energy at best.
To be brutally honest, Block Island is a known spot that "rarely breaks," and this outlook is a perfect example of why. It's a ghost town out there. Don't even bother checking the cam. Your best bet is to find a lake to paddleboard on or pick up kitesurfing, because the only thing blowing here is the wind.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat afternoon. Warm (max 25°C on Sun night, min 19°C on Fri night). Winds decreasing (fresh winds from the NNE on Fri night, light winds from the ENE by Sat night). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 19°C on Wed morning). Wind will be generally light. | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | SE 8 | ESE 8 | SE 7 | SE 9 | SE 12 | SE 12 | SSE 6 | S 7 | S 7 | SSW 6 | SW 5 | SW 5 | SW 5 | SE 9 | ESE 8 | SE 8 | SE 10 | SE 9 | SE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 11 | 12 | 14 | 13 | 23 | 22 | 58 | 131 | 89 | 53 | 52 | 96 | 41 | 42 | 47 | 28 | 15 | 41 | 46 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross | cross-on | cross-off | cross | cross | cross-off | cross | cross-on | cross | cross-on | on | on |
High Tide | 4:20AM0.60m | 5:03PM0.80m | 5:21AM0.64m | 5:53PM0.83m | 6:12AM0.69m | 6:36PM0.86m | 6:56AM0.76m | 7:13PM0.89m | 7:35AM0.82m | 7:47PM0.91m | 8:10AM0.87m | 8:18PM0.93m | |||||||
Low Tide | 10:43PM0.26m | 10:14AM0.24m | 11:34PM0.23m | 11:15AM0.22m | 00:18AM0.20m | 12:06PM0.18m | 00:57AM0.14m | 12:50PM0.15m | 1:31AM0.09m | 1:30PM0.11m | 2:02AM0.05m | 2:08PM0.09m | 2:30AM0.02m | ||||||
 |  |  |  |  | |  |  | | |  | | | | | | | |  | |
 | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | 7:37 | — | 7:35 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — |
mm | — | — | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 19 | 19 | 19 | 19 | 23 | 24 | 25 | 23 | 22 | 23 | 20 | 22 | 23 | 20 | 22 | 23 | 23 | 24 | 24 |
Feels °C | 15 | 17 | 19 | 19 | 24 | 24 | 23 | 21 | 20 | 21 | 17 | 18 | 20 | 18 | 18 | 21 | 25 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 8 | ESE 8 | ENE 5 | ESE 8 | ESE 7 | SE 12 | SSE 6 | S 7 | SE 11 | SSW 6 | SE 6 | SE 10 | SW 5 | SW 5 | ESE 8 | SE 8 | SE 7 | SE 9 | SE 9 |
| kJ | 11 | 12 | 14 | 11 | 5 | 22 | 58 | 131 | 19 | 53 | 9 | 17 | 41 | 23 | 47 | 28 | 13 | 41 | 46 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | SE 13 | SE 7 | SE 9 | SE 8 | ENE 4 | SE 12 | SE 12 | ESE 11 | SE 11 | SE 11 | ESE 6 | SE 11 | SE 9 | — | E 12 | SE 10 | ESE 7 | S 5 |
| kJ | 2 | 7 | 14 | 13 | 11 | 2 | 22 | 21 | 47 | 18 | 18 | 8 | 18 | 42 | — | 3 | 14 | 4 | 2 |
Swell 3 Height (m) Direction Period (s) | SW 5 | SW 5 | SE 9 | SE 13 | SE 12 | ESE 7 | — | E 6 | — | E 7 | E 6 | E 6 | E 6 | E 6 | — | — | E 12 | E 11 | E 11 |
| kJ | 1 | 1 | 3 | 6 | 23 | 5 | — | 3 | — | 3 | 3 | 1 | 3 | 3 | — | — | 3 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 5 | — | ENE 5 | ENE 3 | SSE 5 | WSW 4 | WSW 5 | S 7 | WSW 4 | SW 5 | SW 5 | — | — | SW 4 | SW 4 | SSW 5 | SSW 4 | SSW 3 |
| kJ | 71 | 51 | — | 5 | 3 | 13 | 22 | 20 | 89 | 6 | 52 | 96 | — | — | 21 | 21 | 15 | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 59 | 26 | 159 | 152 | 702 | 236 | 24 | 24 | 24 | 24 | 490 | 198 | 24 | 24 | 159 | 29 | 665 | 1148 | 204 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island 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 Block Island Surf forecast
The above surf forecast table for Block Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Block Island can be found by selecting the local surf guide option on the grey menu. Our Block Island 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 (Block Island) 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 Block Island 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.
Block Island is 33 km (20 miles) from Westerly. If you plan a vacation in Rhode Island, look for hotels and other accommodation in Westerly. Westerly has rooms for a wide range of budgets as well as car hire and transport links.
Nearest