Surf Forecasts:
Block Island surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 5AM (local time) - 4.5ft (1.4m), 6s period, ESE swell with cross-offshore winds.
- Most powerful swell: Friday 31 Jul, 5AM (local time) - 4.5ft (1.3m), 10s period, SSE swell with 342 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 5AM (local time) - 4.5ft (1.4m), 6s period with ESE 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 Thursday (Jul 30) at 5AM. The primary swell is predicted to be 1.4m and 6s period with a secondary swell of 1.0m and 8s. Another secondary swell of 0.4m and 9s is also forecast. 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 1.3m 10s and forecast to arrive on Friday (Jul 31) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Thursday (Jul 30) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 30th Jul) | 4.5ft (1.4m) 6s |
| Best Surf | 5AM (Thu 30th Jul) | 4.5ft (1.4m) 6s |
| Most Powerful | 5AM (Fri 31st Jul) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a proper look at the surf ahead for Block Island. We've got a bit of a slow start, so hold tight. The first sign of anything worth paddling for doesn't show up until Thursday the 30th of July, and even then it's marginal. The water temp is sitting about average for this time of year, nothing out of the ordinary.
For the most part, the first week is a write-off. Swell is small, weak, and the wind is mostly onshore or cross-onshore, mushing everything out. We see a bit of a flicker on Friday the 31st morning, where a little 4ft S swell shows up with a clean cross-off breeze. The combined energy is moderate (243), and it’ll look okay, but it's small and inconsistent. Still, that might be the only clean window in the early going.
Now, the standout. It's not until Monday the 3rd of August that things get seriously interesting. The morning brings a solid 8ft SSE groundswell with a 10-second period and a clean offshore wind from the west. The combined energy is pumping at 1450, which is strong. This is proper expert territory – too big for beginners, but for experienced surfers, the point at Block Island should offer excellent, powerful waves. The swell direction is straight in line with what this spot likes (SE), and the wind will keep it glassy. Just be aware, the break is listed as rarely breaking, so this is a special event. Crowds are often here, so expect company.
After that peak, Tuesday the 4th is still chunky but messy with onshore wind, then it drops off. The second week looks pretty quiet again, with small swell and onshore winds dominating. A few clean mornings pop up, like Saturday the 8th and Sunday the 9th, with light offshore breezes and small 3ft to 4ft swell, but the energy is weak and the period is short. It'll be clean but not really firing.
So, to sum it up: the first half of the outlook is a dud. The only real moment to get excited about is Monday morning, August 3rd, when a big, clean groundswell hits. That’s your one.
Short Range ForecastHeavy rain (total 48mm), heaviest during Wed morning. Warm (max 22°C on Tue morning, min 17°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the ESE by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 19°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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 8 | SE 8 | SSE 4 | S 6 | SE 6 | S 7 | SSE 7 | SSE 9 | S 8 | S 10 | S 9 | S 8 | S 8 | S 7 | S 8 | S 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 55 | 35 | 36 | 50 | 55 | 49 | 105 | 175 | 214 | 178 | 144 | 116 | 339 | 235 | 140 | 78 | 52 | 88 | 88 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-on | cross-on | on | on | on | cross-on | cross-on | cross | cross | cross-on | glassy | cross-off | glassy | off | cross-off | cross-on | cross-on |
High Tide | 7:22AM0.70m | 7:44PM0.91m | 8:03AM0.75m | 8:20PM0.92m | 8:42AM0.79m | 8:52PM0.93m | 9:17AM0.82m | 9:22PM0.93m | 9:50AM0.84m | 9:54PM0.92m | 10:22AM0.87m | 10:28PM0.90m | |||||||
Low Tide | 1:30AM0.14m | 1:04PM0.14m | 2:08AM0.11m | 1:45PM0.12m | 2:43AM0.07m | 2:24PM0.11m | 3:15AM0.05m | 3:01PM0.11m | 3:42AM0.04m | 3:37PM0.11m | 4:06AM0.04m | 4:15PM0.11m | 4:32AM0.04m | ||||||
 | | |  | | |  |  |  | | | |  |  | | | | | | |
 | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — |
 | 8:08 | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — |
mm | — | — | — | — | — | — | 4 | 26 | 18 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 21 | 21 | 22 | 22 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 22 | 23 |
Feels °C | 16 | 18 | 19 | 20 | 21 | 21 | 18 | 18 | 18 | 21 | 21 | 22 | 21 | 21 | 23 | 22 | 22 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | E 6 | E 8 | SSW 6 | S 7 | SSE 7 | SSE 9 | S 8 | S 10 | S 9 | S 8 | S 8 | S 7 | S 8 | S 8 |
| kJ | 55 | 35 | 36 | 50 | 55 | 3 | 5 | 59 | 214 | 178 | 144 | 116 | 339 | 235 | 140 | 78 | 52 | 88 | 88 |
Swell 2 Height (m) Direction Period (s) | E 6 | E 6 | ESE 6 | E 6 | E 6 | E 9 | E 6 | — | — | SSW 7 | SSW 7 | SE 10 | E 6 | SE 10 | SE 10 | E 6 | S 9 | ENE 5 | E 5 |
| kJ | 25 | 19 | 13 | 7 | 7 | 2 | 3 | — | — | 81 | 56 | 4 | 10 | 4 | 4 | 3 | 44 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | S 6 | — | — | S 6 | S 6 | — | — | — | — | ENE 5 | SSW 7 | SE 10 | — | SE 10 | — | SE 9 | ENE 5 | SSE 11 | SE 9 |
| kJ | 1 | — | — | 7 | 1 | — | — | — | — | 29 | 70 | 4 | — | 4 | — | 3 | 10 | 24 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 6 | SW 4 | SSE 4 | S 6 | SE 6 | E 5 | — | E 6 | ENE 6 | NE 4 | NE 4 | NE 4 | NE 4 | — | — | — |
| kJ | — | — | — | 15 | 8 | 49 | 105 | 175 | 64 | — | 52 | 58 | 24 | 29 | 25 | 10 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 25 | 24 | 665 | 138 | 445 | 1804 | 270 | 59 | 24 | 24 | 24 | 24 | 0 | 0 | 24 | 24 | 24 | 24 | 24 |
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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