Surf Forecasts:
Block Island surf forecast from 13 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 2AM (local time) - 8ft (2.5m), 7s period, SW swell with 627 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 2.5m 7s and forecast to arrive on Wednesday (Jul 15) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Jul 16) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 15th Jul) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Alright folks, Rusty here. Let’s be straight with you: Block Island is going to be a tough ticket for the next couple of weeks. This is a spot that rarely breaks, and this forecast is a prime example of why. The first real window of anything surfable doesn't even show up until July 22nd, so we’re looking at a solid nine-day gap with no recommendations. It’s going to be a quiet stretch.
July 13th to 21st – The Waiting Game
From Monday the 13th right through to Tuesday the 21st, the surf is poor. We’re talking tiny, choppy, and blown-out. Swell heights stay under 4 ft for most of this period, with wind howling cross-on or cross-shore. The combined energy is weak, sitting between 29 and 301 (moderate at best), but the wind just ruins any chance of a clean wave. Don’t bother paddling out. The water temperature is about average for this time of year, no big anomaly to report.
July 22nd – The Only Glimmer
Wednesday morning on the 22nd is the one standout. There’s a clean window with a cross-offshore breeze from the west at 12 mph. The swell is 4 ft from the south with an 8-second period, which isn’t epic, but it’s the best we’ll see. The combined energy is moderate at 276. Block Island is a point break here, and that south swell direction is close to its optimum from the southeast. This is a marginal window, but the clean conditions make it the only time to look. The afternoon turns messy again, so get it early.
July 23rd to 28th – Back to the Boneyard
After that brief window, it’s back to a poor outlook. Thursday through to the end of the month, the swell drops and the wind stays onshore or cross-shore. Heights hover around 2 ft to 5 ft, but the energy is weak to moderate, and the wind just chops it all up. For a spot that rarely breaks, this is a normal blank run.
Stay patient, and keep an eye on the forecasts. It tends not to stay this poor forever.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 29°C on Wed afternoon, min 21°C on Mon afternoon). Winds decreasing (strong winds from the SW on Tue night, light winds from the SW by Wed night). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Sat night. Warm (max 28°C on Thu afternoon, min 19°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | SSW 7 | SSW 4 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | SSW 6 | SW 6 | SW 6 | SSW 6 | SSW 5 | SW 5 | SSE 8 | SSE 8 | S 5 | SSW 6 | SSW 7 | SSW 6 | S 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 14 | 54 | 92 | 328 | 627 | 219 | 167 | 55 | 78 | 82 | 31 | 17 | 21 | 7 | 7 | 13 | 192 | 320 | 143 | 76 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-on | cross | cross-off | cross-off |
High Tide | 7:50PM1.15m | 8:15AM0.91m | 8:43PM1.14m | 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 | ||||||||
Low Tide | 1:02PM-0.08m | 2:33AM-0.05m | 2:05PM-0.09m | 3:23AM-0.06m | 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 | ||||||||
 | |  | | | | |  |  | |  | | | | | | |  | |  |  | |
 | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 8:17 | — | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 17 | — | 1 | — |
Temp °C | 22 | 22 | 22 | 22 | 23 | 24 | 28 | 29 | 27 | 24 | 28 | 28 | 22 | 25 | 24 | 21 | 21 | 22 | 22 | 23 | 20 |
Feels °C | 20 | 18 | 18 | 18 | 18 | 19 | 28 | 27 | 28 | 22 | 24 | 26 | 18 | 22 | 20 | 21 | 22 | 21 | 20 | 24 | 18 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 6 | SW 6 | SE 9 | SSW 6 | SSW 5 | SE 8 | S 5 | SSW 5 | SE 13 | SE 13 | SSW 7 | SE 12 | S 6 |
| kJ | 15 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 55 | 78 | 3 | 31 | 17 | 3 | 4 | 5 | 7 | 7 | 255 | 6 | 76 |
Swell 2 Height (m) Direction Period (s) | SE 9 | E 8 | E 8 | E 8 | E 7 | — | S 17 | S 17 | ESE 9 | SE 8 | S 15 | SE 9 | SE 8 | SE 14 | WSW 3 | SSE 8 | E 8 | — | SE 13 | SE 12 | SE 12 |
| kJ | 14 | 1 | 1 | 1 | 1 | — | 6 | 5 | 8 | 3 | 4 | 3 | 3 | 8 | 1 | 7 | 1 | — | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | E 8 | — | — | — | — | — | — | S 17 | S 15 | — | SE 15 | SE 14 | — | SSE 8 | SE 13 | — | — | — | — | — |
| kJ | — | 1 | — | — | — | — | — | — | 5 | 4 | — | 9 | 8 | — | 7 | 7 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 4 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | NW 3 | WNW 3 | SW 6 | NW 3 | N 3 | SW 5 | WNW 3 | — | S 5 | SSW 6 | SSW 7 | SSW 6 | — |
| kJ | — | 14 | 54 | 92 | 328 | 627 | 219 | 167 | 2 | 3 | 82 | 1 | 1 | 21 | 1 | — | 13 | 192 | 320 | 143 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 769 | 1148 | 445 | 847 | 1148 | 211 | 24 | 24 | 24 | 24 | 26 | 634 | 634 | 2633 | 634 | 2500 | 2715 | 201 | 219 | 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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