Surf Forecasts:
Block Island surf forecast from 1 Sep 2026:
- Most powerful swell: Tuesday 1 Sep, 11PM (local time) - 5ft (1.5m), 6s period, ESE swell with 154 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 1.5m 6s and forecast to arrive on Tuesday (Sep 01) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Sunday (Sep 06) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Tue 1st Sep) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here again, same story but in feet and miles. We’re looking at a total blank for Block Island for the entire 16-day run, through to September 16th. Every single session is a no-go, scored as poor surf conditions without a single recommendation.
The guidance file has this break listed as "rarely breaks," so while it’s a bummer, it’s not a huge shock. But it’s still a long, quiet stretch.
You’ll see a few pulses of swell around 5ft on the 9th and the 15th, but the wind is coming in from the SW at 30-40 mph, tearing up any chance of clean waves. The period is short (6-7 seconds), so the energy is moderate and messy. A couple of mornings with north winds turn offshore, but the swell is barely 1ft – clean, but too small to paddle.
The water temp is about normal for the season, but that doesn't matter when there’s no surf. If you’re looking for action, those windy, choppy days with a bit of swell are more interesting for the kite boarders than for a surfer.
That’s the long and short of it. Not a single standout, just a two-week gap.
Rusty.
Short Range ForecastHeavy rain (total 35mm), heaviest during Thu morning. Warm (max 23°C on Thu morning, min 19°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Warm (max 24°C on Thu night, min 15°C on Sun morning). Winds increasing (light winds from the ENE on Fri morning, strong winds from the NNE by Sun morning). | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 7 | ESE 5 | SE 6 | ESE 6 | ESE 6 | SE 6 | SE 6 | SE 6 | ESE 7 | ESE 7 | SW 4 | SSW 7 | SSW 6 | ESE 8 | E 8 | E 9 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 14 | 12 | 48 | 126 | 141 | 132 | 101 | 72 | 43 | 38 | 26 | 25 | 35 | 15 | 13 | 5 | 15 | 14 | 14 |
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 | cross-on | on | cross | cross | off | cross | cross-on | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 3:13PM0.94m | 3:50AM0.73m | 4:30PM0.96m | |||||||
Low Tide | 4:27AM0.03m | 5:25PM0.09m | 5:08AM0.05m | 6:26PM0.13m | 5:56AM0.08m | 7:52PM0.16m | 6:55AM0.10m | 9:21PM0.17m | 8:08AM0.12m | 10:31PM0.14m | 9:43AM0.11m | 11:29PM0.10m | |||||||
 |  |  |  |  | | |  | |  | | |  |  | | |  | | | |
 | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 7:21 | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — |
mm | 1 | 8 | 11 | 3 | — | — | 1 | 11 | — | 1 | — | — | — | — | — | 1 | 1 | — | — |
Temp °C | 21 | 20 | 21 | 19 | 20 | 20 | 22 | 23 | 23 | 24 | 20 | 21 | 23 | 22 | 23 | 22 | 17 | 20 | 19 |
Feels °C | 21 | 22 | 22 | 15 | 17 | 18 | 22 | 24 | 23 | 25 | 20 | 22 | 23 | 18 | 22 | 17 | 9 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 7 | SSE 13 | SE 12 | SE 11 | SE 10 | SE 6 | SE 6 | SE 6 | ESE 7 | ESE 7 | ESE 6 | SSW 7 | SSW 6 | SSW 6 | E 8 | E 9 | SSW 6 | E 9 |
| kJ | 14 | 12 | 18 | 71 | 94 | 79 | 101 | 72 | 43 | 38 | 26 | 16 | 35 | 15 | 7 | 5 | 15 | 4 | 14 |
Swell 2 Height (m) Direction Period (s) | SSW 4 | SW 4 | — | — | — | SW 5 | SE 9 | SE 9 | SE 9 | SW 4 | SE 8 | SE 8 | SE 8 | E 8 | ESE 8 | SSW 5 | SSW 7 | E 9 | SSE 9 |
| kJ | 2 | 1 | — | — | — | 1 | 53 | 28 | 27 | 10 | 24 | 11 | 16 | 12 | 13 | 3 | 5 | 14 | 8 |
Swell 3 Height (m) Direction Period (s) | E 3 | SE 14 | SSE 10 | — | — | — | SSW 5 | — | — | SE 8 | S 5 | S 8 | — | SE 8 | NNE 3 | SE 9 | SE 9 | SE 9 | SSW 6 |
| kJ | 1 | 8 | 10 | — | — | — | 2 | — | — | 25 | 4 | 1 | — | 9 | 1 | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | S 4 | SSE 2 | ESE 5 | SE 6 | ESE 6 | ESE 6 | — | SSW 5 | SW 4 | NW 3 | NW 3 | SW 4 | NW 3 | NNW 4 | WSW 2 | NE 4 | NE 4 | NE 5 | NE 5 |
| kJ | 6 | 1 | 48 | 126 | 141 | 132 | — | 3 | 25 | 1 | 1 | 25 | 4 | 10 | 1 | 45 | 24 | 20 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 249 | 702 | 729 | 156 | 605 | 374 | 270 | 24 | 141 | 24 | 133 | 221 | 49 | 207 | 634 | 1024 | 1812 | 130 | 130 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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.
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