Surf Forecasts:
Block Island surf forecast from 2 Sep 2026:
- Best quality surf: Monday 7 Sep, 2AM (local time) - 2.5ft (0.8m), 11s period, E swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11PM (local time) - 5.5ft (1.7m), 6s period, SW swell with 210 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 2AM (local time) - 2.5ft (0.8m), 11s period with E swell.
Best Forecast Surf Conditions for Block Island this week:
The surf forecast for Block Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 2AM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.1m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 1.7m 6s and forecast to arrive on Tuesday (Sep 08) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Sep 05) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 7th Sep) | 2.5ft (0.8m) 11s |
| Best Surf | 2AM (Mon 7th Sep) | 2.5ft (0.8m) 11s |
| Most Powerful | 11PM (Tue 8th Sep) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here, and let me tell you about what's on the table for Block Island over the next couple of weeks. Honestly, it's a bit of a tough stretch. We're looking at a real dry spell, but I'll walk you through it.
For the whole 16-day window, there’s nothing that's going to get your heart pumping. We've got about a week and a half of barely-there surf before we see a pulse of energy around the 8th of September, but even that comes with some messy conditions. The water temperature is sitting right around 70°, so that's pretty much normal for this time of year.
Let's start with the first week. Right from the get-go on Tuesday, September 1st, it's tiny. We're talking about a 0.7 ft wave from the SSE with a long period of 13 seconds, but the combined swell energy is a weak 41 and it's not doing anything with that. The wind is onshore from the SE at 16 mph, so it's just blown-out junk.
Wednesday the 2nd morning sees a bump to 5 ft from the ESE, but the period is a short, weak 6 seconds. The energy is moderate at 255, but the cross-shore wind from the East at 19 mph is going to leave it lumpy and chopped. It's not a pretty picture.
Thursday the 3rd and Friday the 4th are small. Friday morning is the first time we see clean conditions with a light offshore from the NNW at 3 mph, but we're only looking at 2 ft of weak swell (energy 47). It's too small to get excited about. We get a similar clean window on Saturday the 5th morning with a 12 mph offshore from the North, but again, only 1 ft.
The only real event on the calendar is around the 8th of September. On Tuesday the 8th morning, we see a jump to 6 ft from the SSW, but it's a short period of 7 seconds. The energy is solid enough at 261, but the wind is a messy cross-onshore from the SSW at 16 mph. The afternoon gets even worse, with the wind cranking up to 25 mph. It's going to be a choppy, messy, strong breeze of a day. That's more of a kite-surfing setup than a paddle-surfing one.
After that, the second week fades away again. We see a small, clean 2 ft on the 10th morning, and a glassy 4 ft on the 11th morning, but the energy is still weak (42 and 92 respectively) and the waves just don't have any push. Even the glassy conditions can't make up for the lack of swell. The rest of the week is a mix of tiny swell and onshore junk.
So, to be straight with you, there are no standouts here. The whole 16-day forecast is one big gap without a solid recommendation. This is one of those periods where you save the wax and wait for a better chart. The forecast can always change, but as it sits, it's a real snoozer for Block Island.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Thu morning. Warm (max 25°C on Fri afternoon, min 19°C on Tue night). Winds decreasing (fresh winds from the ESE on Tue night, light winds from the W by Thu night). | Days 5-7 Weather SummarySome drizzle, heaviest during Sat afternoon. Warm (max 24°C on Fri night, min 15°C on Sun morning). Winds decreasing (fresh winds from the NNW on Fri night, light winds from the NNE by Mon morning). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 12 | SE 11 | SE 6 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 8 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | E 9 | E 11 | E 11 | E 11 | E 10 |
Wave Graph | |||||||||||||||||||
79 | 94 | 79 | 92 | 93 | 60 | 38 | 23 | 30 | 32 | 15 | 12 | 18 | 8 | 38 | 149 | 108 | 110 | 73 | |
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 | off | cross-off | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross-on | cross |
High Tide | 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 | 5:02AM0.80m | 5:35PM0.99m | |||||||
Low Tide | 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 | 11:08AM0.07m | 00:20AM0.05m | |||||||
— | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | |
7:19 | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — | — | 7:08 | — | |
mm | 3 | — | — | 2 | 11 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 23 | 23 | 23 | 24 | 23 | 25 | 24 | 21 | 22 | 18 | 18 | 20 | 20 | 19 | 20 | 21 |
Feels °C | 16 | 17 | 17 | 24 | 23 | 23 | 27 | 23 | 23 | 24 | 18 | 20 | 13 | 11 | 17 | 17 | 17 | 15 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 11 | SE 10 | SE 9 | SSE 6 | SE 6 | SE 6 | SSW 5 | SE 8 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | E 9 | E 11 | E 11 | E 11 | E 10 |
71 | 94 | 79 | 53 | 93 | 60 | 38 | 15 | 17 | 32 | 15 | 12 | 18 | 8 | 38 | 149 | 108 | 110 | 73 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 4 | — | SE 9 | SE 9 | SW 5 | SE 8 | E 7 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SSW 6 | SE 9 | WSW 4 | SE 8 | SE 8 |
— | — | 1 | — | 28 | 27 | 13 | 23 | 8 | 10 | 10 | 10 | 3 | 3 | 4 | 3 | 5 | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 8 | SE 6 | SSE 6 | E 7 | E 7 | — | — | — | SE 10 | SW 6 | SE 9 | S 5 | — |
— | — | — | — | — | — | 18 | 9 | 3 | 8 | 4 | — | — | — | 4 | 1 | 3 | 1 | — | |
Wind waves Height (m) Direction Period (s) | SE 5 | ESE 5 | SE 6 | SE 6 | SW 5 | SW 4 | W 4 | — | SSW 6 | NNW 4 | NNE 4 | NE 6 | ENE 6 | ENE 5 | ENE 5 | WSW 2 | — | SW 4 | SW 4 |
79 | 78 | 69 | 92 | 1 | 16 | 6 | — | 30 | 16 | 42 | 88 | 65 | 51 | 55 | 1 | — | 2 | 20 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1805 | 157 | 612 | 1805 | 24 | 26 | 42 | 24 | 49 | 152 | 195 | 207 | 634 | 775 | 775 | 1701 | 142 | 1812 | 347 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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.











