Surf Forecasts:
Block Island surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 2AM (local time) - 5ft (1.5m), 7s period, SSE swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 8ft (2.5m), 7s period, S swell with 622 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 2AM (local time) - 5ft (1.5m), 7s period with SSE 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 2AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.4m and 10s. 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 2.5m 7s and forecast to arrive on Wednesday (Jul 29) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Jul 31) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 30th Jul) | 5ft (1.5m) 7s |
| Best Surf | 2AM (Thu 30th Jul) | 5ft (1.5m) 7s |
| Most Powerful | 8AM (Wed 29th Jul) | 8ft (2.5m) 7s |
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 the menu for Block Island over the next couple of weeks.
Straight up, it's a slow start. We've got a few days of small, weak swell and onshore winds before things start to look a little more promising. The water is sitting at 68.2°, which is a bit colder than normal for this time of year, so you might want a thicker spring suit.
The first real chance to get wet comes on Wednesday, 29th July. The afternoon should see a clean-up with a light cross-offshore breeze from the WNW. Swell will be around 5.2ft from the SE, with a period of 7 seconds. The wave energy is moderate (375), but it's a short-period swell, so it might be a bit crumbly. Still, after a few days of junk, it's a welcome sight.
Thursday, 30th July, is looking like the pick of the first week. The morning kicks off with a light offshore breeze from the ENE, keeping things clean. We’ve got a solid 5.2ft of swell from the south, with a slightly better 8-second period. The energy is moderate (353), and it stays clean through the afternoon with a cross-offshore wind. This is your best bet for a decent session early on.
Saturday morning, 1st August, is another one to circle. The wind goes glassy, dead calm, and there's 3.9ft of S swell with a 10-second period, giving it a bit more push (268 energy). That longer period will mean better-shaped waves, though it might make the sets a bit more spaced out. It'll be clean as a whistle, but the afternoon gets ruined by a cross-onshore breeze.
Looking further out, Tuesday, 4th August, has a promising morning. A clean offshore wind from the north is forecast, with 4.9ft of south swell on an 8-second period. The energy is moderate (285). This could be a fun one, but it's a long way out, so keep an eye on the forecasts.
Honestly, if you're planning a trip, Thursday the 30th of July is the standout. It's the most consistent window of clean conditions with a decent, rideable swell. The other days all have their issues, either with wind or with the swell being a bit weak. Crowds are possible at Block Island, but with conditions this average, I doubt it'll be packed.
Nothing else in the second week really jumps out. A few windows of clean wind, but the swell is small and inconsistent.
Short Range ForecastModerate rain (total 16mm), heaviest on Wed morning. Warm (max 22°C on Mon night, min 18°C on Mon morning). Winds increasing (calm on Mon morning, strong winds from the SSE by Tue night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 21°C on Thu morning, min 18°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the NE by Fri night). | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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) | SE 8 | SE 8 | SE 8 | SSW 5 | S 5 | S 6 | SSW 7 | SE 7 | SSE 7 | S 9 | S 8 | S 8 | S 8 | S 8 | S 9 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 35 | 36 | 50 | 66 | 112 | 187 | 234 | 206 | 237 | 340 | 224 | 182 | 130 | 100 | 164 | 112 | 82 | 57 | 53 | 38 | 24 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-off |
High Tide | 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 | 10:55AM0.89m | 11:07PM0.87m | ||||||||
Low Tide | 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 | 4:56PM0.12m | ||||||||
 | |  |  |  |  | | |  | | | | | |  | | | | |  |  | |
 | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — |
mm | — | — | — | 1 | — | 5 | 9 | — | 1 | — | — | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 19 | 21 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 19 | 20 | 20 | 20 | 19 | 20 | 20 |
Feels °C | 19 | 19 | 21 | 20 | 20 | 19 | 18 | 23 | 22 | 23 | 21 | 22 | 18 | 20 | 16 | 19 | 20 | 21 | 20 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | E 6 | E 6 | SSW 7 | SE 7 | SSE 7 | S 9 | S 8 | S 8 | S 8 | S 8 | S 9 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 |
| kJ | 35 | 36 | 50 | 46 | 3 | 3 | 234 | 206 | 237 | 340 | 224 | 182 | 130 | 100 | 164 | 112 | 82 | 57 | 53 | 38 | 24 |
Swell 2 Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | ESE 9 | E 8 | SW 7 | SSW 7 | SE 10 | E 5 | E 6 | E 6 | SE 9 | ESE 10 | SE 9 | E 6 | E 5 | S 10 | E 5 | SE 7 | SE 9 |
| kJ | 19 | 12 | 7 | 7 | 8 | 6 | 223 | 83 | 24 | 5 | 10 | 6 | 14 | 9 | 3 | 22 | 9 | 18 | 2 | 7 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | E 9 | — | — | ENE 6 | SSW 8 | — | — | — | ESE 9 | — | SE 9 | SE 9 | E 5 | SE 9 | E 5 | E 6 |
| kJ | — | — | — | — | — | 6 | — | — | 6 | 6 | — | — | — | 9 | — | 3 | 3 | 5 | 3 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 4 | SSW 5 | S 5 | S 6 | SE 6 | — | — | — | — | — | ENE 6 | ENE 4 | ENE 5 | — | — | — | — | S 4 | S 4 |
| kJ | — | — | 7 | 66 | 112 | 187 | 216 | — | — | — | — | — | 11 | 16 | 47 | — | — | — | — | 9 | 19 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 1804 | 134 | 634 | 1696 | 217 | 81 | 24 | 0 | 24 | 24 | 0 | 25 | 25 | 24 | 24 | 25 | 24 | 25 | 1528 | 85 |
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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