Surf Forecasts:
Block Island surf forecast from 15 Jul 2026:
- Best quality surf: Sunday 19 Jul, 8PM (local time) - 6ft (1.9m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 19 Jul, 2PM (local time) - 8ft (2.4m), 8s period, SSW swell with 679 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 8PM (local time) - 6ft (1.9m), 8s period with SSW 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 Sunday (Jul 19) at 8PM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 2.4m 8s and forecast to arrive on Sunday (Jul 19) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Jul 15) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 19th Jul) | 6ft (1.9m) 8s |
| Best Surf | 8PM (Sun 19th Jul) | 6ft (1.9m) 8s |
| Most Powerful | 2PM (Sun 19th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, let's get into it. Rusty here.
First up, the outlook for Block Island. Look, I gotta be straight with you – the next 16 days are a real mixed bag, and honestly, mostly a letdown. This break rarely breaks, and the forecast is backing that up for a long stretch. There's a big gap of nothing worthwhile from now until the end of the first week.
For the first several days, we're looking at small, weak swell with poor winds. The water temp is sitting at 68°, which is pretty much average for this time of year, so no surprises there.
The first real glimmer of hope comes on Sunday, July 19th. The afternoon shows a bit of a pulse with a 7ft swell from the SW, but the period is a short 8 seconds, so it's not going to have much shape. The wind is a cross-offshore from the WNW at 16 mph, which will keep it clean, but the combined energy is a solid 593 (moderate wave energy). The forecast calls it "marginal," which means you'll need a keen eye and a forgiving tide to get a few.
Now, if you're after the one standout, you've got to wait for Wednesday, July 22nd. The morning is where it's at. We're getting a 5ft swell from the S, with a decent 9-second period. The kicker? A light offshore wind from the N at 9 mph. That's going to make conditions glassy and clean. The combined energy is 390 (moderate wave energy). This is the best it's going to get. It's worth noting that the swell direction is from the south, while the optimum for this point is from the SE, so it's not perfect, but with those clean conditions, it's your best bet. Crowds are often an issue here, so if you're keen, get there early. This is for the experts, though, as the swell is over 5ft.
After that, it drops off again. The rest of the period is a write-off with small, weak, and messy conditions. The wind is all over the place, and the swell is tiny. It's a real shame, because the potential is there, but the forecast just isn't cooperating.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Wed afternoon, min 21°C on Fri morning). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Fri morning). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sat afternoon. Warm (max 25°C on Sun afternoon, min 19°C on Sat afternoon). Winds decreasing (strong winds from the WSW on Sun morning, light winds from the NW by Mon morning). | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
AM | 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) | SW 6 | SW 6 | SSW 6 | SSW 6 | SW 4 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | S 5 | SSW 4 | SSW 5 | SSW 7 | SW 8 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 162 | 122 | 43 | 30 | 41 | 27 | 17 | 25 | 26 | 15 | 22 | 109 | 415 | 587 | 355 | 372 | 311 | 191 | 181 | 349 | 302 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | cross | cross-on | glassy | cross-on | cross | cross | cross-on | cross | cross | cross-off | off | cross | cross-on | cross-on | cross-on | cross | off |
High Tide | 9:10AM0.96m | 9:34PM1.10m | 10:03AM0.99m | 10:23PM1.05m | 10:56AM1.00m | 11:11PM0.97m | 11:49AM0.98m | 00:00AM0.88m | 12:42PM0.95m | 00:50AM0.79m | 1:37PM0.91m | 1:44AM0.71m | 2:35PM0.87m | 2:44AM0.66m | |||||||
Low Tide | 3:06PM-0.07m | 4:10AM-0.07m | 4:06PM-0.04m | 4:57AM-0.05m | 5:07PM0.01m | 5:43AM-0.02m | 6:08PM0.07m | 6:28AM0.03m | 7:10PM0.13m | 7:13AM0.09m | 8:13PM0.18m | 8:00AM0.14m | 9:16PM0.21m | ||||||||
 | |  | |  |  | | | | |  |  | | | | | | | | |  | |
 | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — |
 | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | 4 | 5 | — | — | — | — | — | — | 5 | — | 1 |
Temp °C | 27 | 32 | 30 | 25 | 28 | 28 | 23 | 25 | 25 | 23 | 19 | 22 | 24 | 25 | 25 | 20 | 22 | 22 | 22 | 23 | 23 |
Feels °C | 26 | 30 | 26 | 23 | 23 | 27 | 22 | 20 | 20 | 21 | 17 | 19 | 20 | 21 | 23 | 18 | 19 | 20 | 20 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SSW 6 | SSW 6 | SE 9 | SSW 6 | SSW 6 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 13 | SW 8 | S 9 | S 9 | S 9 | S 8 | S 12 | — | SSW 7 |
| kJ | 12 | 12 | 43 | 30 | 3 | 27 | 17 | 3 | 3 | 3 | 3 | 3 | 7 | 587 | 355 | 372 | 311 | 191 | 3 | — | 302 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 17 | ESE 9 | SE 9 | S 15 | SE 9 | SE 8 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | — | SE 12 | WNW 3 | SE 12 | SE 12 | SE 12 | — | — | — |
| kJ | 6 | 5 | 7 | 3 | 4 | 3 | 3 | 8 | 8 | 7 | 7 | 7 | — | 6 | 1 | 6 | 6 | 6 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | S 17 | S 15 | — | SE 15 | SE 14 | — | — | E 8 | — | E 8 | — | — | N 3 | — | — | — | — | — | — |
| kJ | — | — | 5 | 4 | — | 9 | 8 | — | — | 1 | — | 1 | — | — | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | NNW 4 | — | SW 4 | NW 3 | NNE 2 | SSW 6 | SSW 6 | S 5 | SSW 4 | SSW 5 | SSW 7 | — | — | — | — | — | S 8 | S 8 | — |
| kJ | 162 | 122 | 5 | — | 41 | 2 | 1 | 25 | 26 | 15 | 22 | 109 | 415 | — | — | — | — | — | 181 | 349 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 49 | 1084 | 1701 | 49 | 642 | 634 | 769 | 642 | 2593 | 195 | 195 | 24 | 0 | 24 | 24 | 24 | 24 | 195 | 26 |
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.
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