Surf Forecasts:
Block Island surf forecast from 26 Aug 2026:
- Most powerful swell: Friday 28 Aug, 5AM (local time) - 4ft (1.2m), 6s period, SSW swell with 104 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 6s and forecast to arrive on Friday (Aug 28) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Aug 29) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Fri 28th Aug) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you on this one. Looking at the charts for our neck of the woods, it's a real tough stretch. We're staring down a long, flat spell with nothing worth paddling out for.
Here's the deal. The only spot we've got to look at is Block Island, a point break that's a real ghost town – it rarely breaks. And looking at the next 16 days, it's staying that way. From Wednesday the 26th of August right through to the 10th of September, every single forecast entry is a "poor surf conditions" with a score of zero. That's a solid two-week gap with no recommendations.
The water temp is sitting around 70°F which is pretty much normal for this time of year. But that's where the good news ends.
We get a few pulses of energy, but they're all wasted. The combined swell energy for the whole period is mostly weak, with values like 84 (weak), 93 (weak), and 148 (moderate). There's a couple of stronger ones on the 7th of September (232 moderate) and the 10th of September (406 moderate), but the wind just ruins everything.
For the first week, it's a constant battle with cross-onshore winds. The swell is tiny, 1 ft to 4 ft, with a short, weak period of 5 to 9 seconds. It's just a choppy, gutless mess.
The second week of September looks a *little* more promising for energy, but it comes with a price. On the 5th of September, we get a 4 ft swell from the East with a 9-second period, but the wind is screaming from the NNW at 31 mph. That's a near gale. It's clean, sure, but you won't be able to paddle into anything. That setup is more interesting for a kite surfer than a paddle surfer.
The only real standout in terms of size comes on the 10th of September. A clean, cross-off wind, but the swell is 5 ft to 6 ft from the SE with a short period of 5-7 seconds. That's a peak energy of 406 (moderate), but the period is so short it'll be a bumpy, closing-out mess. It's too big and shifty for beginners and not good quality for anyone else.
So, in short, we're in a drought. The spot is inconsistent, the wind is mostly wrong, and the swell is either too small or too wind-affected. Don't bother checking the cam for a while. Forecasts can change, but right now, it's a hard pass.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri morning. Warm (max 24°C on Thu morning, min 20°C on Sat morning). Winds decreasing (fresh winds from the SSW on Thu night, light winds from the N by Sat morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Tue morning. Warm (max 25°C on Sat night, min 19°C on Tue morning). Winds increasing (calm on Mon morning, fresh winds from the NNE by Tue morning). | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
PM | 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 | SE 8 | SE 8 | SE 9 | SSW 6 | S 6 | S 6 | S 6 | S 7 | SSW 7 | SE 8 | SE 8 | SE 8 | SE 8 | SW 5 | SW 5 | SSW 5 | SSW 5 | SE 10 | SE 12 |
Wave Graph | ||||||||||||||||||||
72 | 70 | 74 | 77 | 102 | 91 | 53 | 53 | 43 | 48 | 34 | 35 | 25 | 24 | 28 | 32 | 23 | 14 | 15 | 23 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | off | cross-off | cross | cross | cross | cross-on | cross | cross | cross-off | cross | cross-off | cross-off | cross |
High Tide | 7:47PM0.91m | 8:10AM0.87m | 8:18PM0.93m | 8:43AM0.91m | 8:50PM0.94m | 9:14AM0.95m | 9:25PM0.94m | 9:47AM0.98m | 10:03PM0.92m | 10:23AM0.99m | 10:44PM0.88m | 11:05AM1.00m | 11:30PM0.83m | |||||||
Low Tide | 2:02AM0.05m | 2:08PM0.09m | 2:30AM0.02m | 2:43PM0.07m | 2:55AM0.01m | 3:19PM0.05m | 3:22AM0.00m | 3:56PM0.05m | 3:52AM0.01m | 4:38PM0.06m | 4:27AM0.03m | 5:25PM0.09m | ||||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | |
7:29 | — | — | 7:27 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 1 | — | 3 |
Temp °C | 22 | 23 | 24 | 24 | 23 | 24 | 24 | 24 | 21 | 24 | 25 | 24 | 24 | 24 | 23 | 24 | 24 | 23 | 19 | 17 |
Feels °C | 21 | 23 | 23 | 22 | 22 | 25 | 25 | 26 | 22 | 21 | 21 | 22 | 21 | 21 | 26 | 23 | 25 | 20 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 9 | SE 8 | S 6 | S 6 | S 6 | S 7 | SSW 7 | SE 8 | S 6 | SE 8 | SE 8 | SSW 5 | SE 8 | SE 7 | SSW 5 | SE 6 | SSW 5 |
72 | 70 | 74 | 77 | 72 | 91 | 41 | 53 | 43 | 48 | 34 | 17 | 25 | 24 | 21 | 17 | 15 | 14 | 10 | 9 | |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | E 8 | E 11 | E 11 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | S 6 | SE 8 | S 6 | SSW 6 | SE 8 | SSE 6 | SE 8 | SE 6 | SW 5 | SE 12 |
3 | 6 | 1 | 9 | 2 | 55 | 53 | 49 | 40 | 41 | 19 | 35 | 3 | 6 | 23 | 4 | 3 | 10 | 6 | 23 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | E 10 | E 10 | E 9 | E 9 | E 9 | ENE 3 | — | — | — | S 7 | — | — | SE 14 | SE 10 | ENE 3 |
— | — | — | — | — | 2 | 2 | 2 | 2 | 2 | 1 | — | — | — | 1 | — | — | 7 | 15 | 2 | |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 3 | SSW 6 | SSW 4 | SSW 6 | — | — | — | NE 4 | ENE 4 | — | — | SSW 6 | SW 4 | SW 5 | SW 5 | SSW 5 | — | ENE 3 | NE 3 |
9 | 4 | 18 | 24 | 102 | — | — | — | 11 | 6 | — | — | 18 | 12 | 28 | 32 | 23 | — | 3 | 2 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1084 | 24 | 133 | 1148 | 152 | 24 | 26 | 24 | 24 | 26 | 221 | 221 | 2715 | 198 | 49 | 29 | 1156 | 445 | 1156 | 198 |
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)
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.











