Surf Forecasts:
Block Island surf forecast from 30 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 5PM (local time) - 6ft (1.9m), 6s period, ESE swell with 289 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 1.9m 6s and forecast to arrive on Wednesday (Sep 02) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Saturday (Sep 05) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Wed 2nd Sep) | 6ft (1.9m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on offer for Block Island over the next couple of weeks.
Right off the bat, I gotta be straight with you – this is a tough one. The whole 16-day window is looking pretty grim. There are no good surf options on the table at all. We’re looking at a blank run that stretches from the end of August all the way through to mid-September. Every single session is flagged as poor surf conditions, with scores of zero. It’s the kind of run that’s more normal for this area when the summer pattern just won't let go.
The only break on the radar is Block Island (Block Island). This is a point break that’s exposed to the swell but rarely breaks, and it's often crowded when it does. Over the next two weeks, that won't be an issue.
Let’s walk through the dates. Sunday the 30th of August starts off with a tiny 1 ft swell from the SE, period of 8 seconds, and a cross-shore wind. The combined energy is a weak 35. By the afternoon, the swell swaps to the SW at 3 ft but with a miserable 4-second period – that's just wind slop.
Monday the 31st is more of the same: tiny 1 ft SE swell with a light cross-shore, offering a combined energy of just 38. Tuesday the 1st of September brings light rain and a 1 ft SE swell with an onshore wind. The energy drops to 18. Pathetic.
We get a little bump mid-week. On Wednesday the 2nd of September, the swell picks up to 6 ft from the ESE, but the period is a short 6 seconds and the wind is a fresh cross-onshore at 19 mph. The combined energy jumps to 325, but it’s lumpy and messy. That size, with those winds, you’d be better off looking at it for a kite session than a paddle. Thursday the 3rd is similar, around 4 ft from the SE, but with risk of thunderstorms and a choppy cross-onshore.
Friday the 4th of September finally shows a clean window. The wind goes light offshore from the N at 9 mph, and the swell is a tiny 2 ft from the ESE. It’s clean, but there’s just no power. The energy is only 58.
Saturday the 5th of September morning is clear with a light offshore breeze and a 2 ft ESE swell. Clean, but again, tiny. Afternoon goes to crap with a strong cross-onshore.
The second week doesn't get any better. From Sunday the 6th through to Monday the 14th of September, we see a mix of tiny swells, short periods, and onshore or cross-shore winds. There’s a moment on Wednesday the 9th where a longer-period groundswell (12 seconds) from the SSE shows up with a combined energy of 146, but the wind is onshore and the swell is only 2 ft. Useless. On Sunday the 13th, the swell builds to 7 ft from the SSW with a 6-second period and a cross-shore wind, giving a combined energy of 360. That’s a lot of water moving, but with that short period and cross-shore, it’s going to be a washing machine. For experts only, and even then, it’s not looking good.
The water temp is about average for the time of year, nothing weird going on there.
Look, I hate to be the bearer of bad news, but this outlook is a dud. The forecasts can change, and it tends not to stay this poor for long, so keep an eye on it. But for now, leave the boards in the van.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Mon night. Warm (max 24°C on Sun night, min 19°C on Mon night). Winds decreasing (fresh winds from the WSW on Sun night, light winds from the ENE by Mon morning). | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Wed afternoon. Warm (max 23°C on Thu afternoon, min 18°C on Thu night). Winds decreasing (fresh winds from the ESE on Tue night, light winds from the SW by Fri afternoon). | ||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 | SW 4 | SW 5 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SSE 12 | ESE 6 | ESE 6 | ESE 6 | SE 7 | SE 7 | ESE 7 | ESE 6 | SW 6 | E 7 |
Wave Graph | |||||||||||||||||||
34 | 25 | 28 | 25 | 23 | 16 | 14 | 12 | 18 | 96 | 230 | 289 | 165 | 139 | 93 | 56 | 26 | 24 | 24 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | off | off | cross-on | cross-off |
High Tide | 9:25PM0.94m | 9:47AM0.98m | 10:03PM0.92m | 10:23AM0.99m | 10:44PM0.88m | 11:05AM1.00m | 11:30PM0.83m | 11:52AM0.99m | 00:21AM0.77m | 12:48PM0.97m | 1:21AM0.73m | 1:55PM0.95m | 2:32AM0.71m | ||||||
Low Tide | 3:22AM0.00m | 3:56PM0.05m | 3:52AM0.01m | 4:38PM0.06m | 4:27AM0.03m | 5:25PM0.09m | 5:08AM0.05m | 6:26PM0.13m | 5:56AM0.08m | 7:52PM0.16m | 6:55AM0.10m | 9:21PM0.17m | |||||||
— | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
7:23 | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — | |
mm | — | — | — | 1 | — | — | 9 | 2 | 1 | 1 | — | 7 | 4 | 5 | 4 | — | — | — | — |
Temp °C | 21 | 22 | 23 | 24 | 20 | 22 | 22 | 20 | 21 | 21 | 20 | 20 | 22 | 22 | 23 | 23 | 20 | 22 | 24 |
Feels °C | 19 | 19 | 20 | 22 | 20 | 22 | 22 | 21 | 23 | 20 | 16 | 17 | 21 | 22 | 23 | 25 | 19 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SW 5 | SSW 5 | SSW 5 | SE 8 | SE 7 | SE 8 | SSE 12 | SE 11 | SE 10 | SE 9 | SE 7 | SE 7 | ESE 7 | ESE 6 | E 7 | E 7 |
34 | 25 | 25 | 25 | 15 | 8 | 14 | 12 | 17 | 96 | 94 | 50 | 31 | 139 | 93 | 56 | 26 | 14 | 24 | |
Swell 2 Height (m) Direction Period (s) | SSW 6 | SSW 6 | — | SE 8 | SE 8 | SE 8 | SW 5 | SSW 4 | SSE 13 | E 5 | SW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SSW 5 | SSW 5 | SE 6 | SW 5 |
11 | 3 | — | 18 | 23 | 16 | 5 | 2 | 18 | 11 | 1 | 2 | 2 | 8 | 8 | 9 | 9 | 13 | 7 | |
Swell 3 Height (m) Direction Period (s) | E 6 | S 6 | E 9 | — | — | SSW 5 | — | SE 10 | SE 10 | SSW 4 | — | SSW 5 | SSW 5 | SW 6 | ENE 5 | SE 8 | SE 8 | SE 8 | SE 8 |
2 | 2 | 2 | — | — | 4 | — | 4 | 4 | 3 | — | 2 | 2 | 8 | 5 | 24 | 23 | 17 | 10 | |
Wind waves Height (m) Direction Period (s) | — | SW 3 | SW 4 | — | NNW 3 | — | — | — | SE 3 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | — | — | — | — | SW 6 | NNW 3 |
— | 5 | 28 | — | 1 | — | — | — | 2 | 28 | 230 | 289 | 165 | — | — | — | — | 24 | 8 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 665 | 2576 | 49 | 702 | 642 | 1156 | 702 | 1156 | 308 | 322 | 371 | 251 | 24 | 24 | 24 | 24 | 163 | 49 |
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.











