Surf Forecasts:
Block Island surf forecast from 11 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 2AM (local time) - 7ft (2.1m), 6s period, SW swell with 352 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 2.1m 6s 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 0.5m 3s period and expected on Saturday (Jul 18) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 15th Jul) | 7ft (2.1m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Hey folks, Rusty here. Well, I've stared at the charts for Block Island, and I gotta be straight with you – it's a tough run ahead. This spot is a point break that rarely breaks, and for the next week and a half, it's just not happening. We're looking at a solid gap with no real surf to get excited about from now all the way through to the 19th of July. The water's sitting at 66°F, which is a bit colder than normal for this time of year.
So, let's talk about the one day that *might* offer a glimmer. It's a long way off, but mark your calendars for Monday the 20th. The morning session shapes up with some glassy conditions – that's a big deal for clean waves. We've got a 6ft swell rolling in from the ENE, but the energy is moderate (252 combined units). The catch? It's a short period swell at 6 seconds, so it'll be a bit soft and lacking that punch. Still, with the wind going glassy early, it’s the only window that looks worth a paddle. Monday afternoon the wind swings onshore and jacks it up.
From there, the 21st through the 24th sees a mix of onshore and cross winds, with building swell but always messy. We get a pulse of energy on the 25th with a 6ft swell from the SSE and a 10-second period, giving us strong energy (614 combined units), but that fresh cross-breeze will keep it lumpy. The 26th of July (Sunday) cleans up with a strong cross-offshore wind, but the swell stays around 6ft from the SSE, and the period hits 11 seconds – that’s a proper groundswell, but for a point break like Block Island, a long period from that direction might not line up perfectly. The energy is very strong (789 combined units), but the rating is only marginal. It’s a long-range call, so keep an eye on it, but don’t hold your breath.
Honestly, this spot is inconsistent for a reason. The blank run we’re in is pretty normal here. Keep checking back, forecasts change.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 20°C on Sat night). Winds increasing (light winds from the WSW on Sun night, fresh winds from the SW by Mon night). | Days 4-6 Weather SummaryMostly dry. Warm (max 32°C on Wed night, min 22°C on Tue morning). Winds decreasing (strong winds from the SW on Tue night, light winds from the WNW by Thu morning). | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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 7 | S 7 | S 7 | S 7 | SE 10 | SE 9 | SE 9 | SW 4 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 49 | 36 | 22 | 24 | 23 | 15 | 14 | 13 | 29 | 49 | 177 | 352 | 126 | 103 | 32 | 30 | 57 | 55 | 70 | 78 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | off |
High Tide | 5:51PM1.08m | 6:19AM0.80m | 6:53PM1.12m | 7:18AM0.85m | 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 | ||||||||
Low Tide | 10:52AM-0.01m | 00:47AM0.02m | 11:58AM-0.05m | 1:41AM-0.02m | 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 | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | |  | |
 | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 22 | 23 | 22 | 22 | 23 | 21 | 20 | 21 | 21 | 23 | 25 | 25 | 28 | 30 | 32 | 26 | 29 | 25 | 27 | 29 | 27 |
Feels °C | 19 | 20 | 20 | 20 | 20 | 18 | 20 | 17 | 17 | 19 | 21 | 22 | 27 | 28 | 28 | 23 | 24 | 21 | 27 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | SE 9 | SE 9 | SE 7 | SE 7 | SE 9 | SE 9 | SE 9 | SW 6 | SSW 6 | SE 9 | SSW 6 | SSW 6 | SE 8 | SSW 6 |
| kJ | 49 | 36 | 22 | 24 | 23 | 15 | 9 | 13 | 13 | 8 | 8 | 20 | 12 | 12 | 32 | 30 | 3 | 55 | 70 | 3 | 41 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | ESE 4 | SE 4 | E 7 | E 5 | SE 9 | SE 9 | — | S 17 | S 17 | ESE 9 | SE 8 | S 15 | SE 9 | SE 8 | SE 14 | SE 8 |
| kJ | 14 | 14 | 14 | 14 | 14 | 6 | 5 | 1 | 1 | 13 | 13 | — | 6 | 5 | 8 | 3 | 4 | 3 | 3 | 8 | 3 |
Swell 3 Height (m) Direction Period (s) | E 7 | — | E 7 | E 7 | E 7 | SE 10 | SE 9 | E 8 | E 8 | E 5 | — | — | — | — | S 17 | S 15 | — | SE 15 | SE 14 | — | SE 14 |
| kJ | 4 | — | 4 | 1 | 1 | 14 | 14 | 1 | 1 | 1 | — | — | — | — | 5 | 4 | — | 9 | 8 | — | 8 |
Wind waves Height (m) Direction Period (s) | ENE 3 | E 3 | ESE 4 | E 3 | ESE 4 | — | — | SSW 3 | SW 4 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | NNW 3 | — | SSW 6 | — | — | SSW 6 | NNE 3 |
| kJ | 3 | 5 | 4 | 3 | 4 | — | — | 11 | 29 | 49 | 177 | 352 | 126 | 103 | 4 | — | 57 | — | — | 78 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 634 | 642 | 642 | 767 | 912 | 846 | 870 | 249 | 445 | 2496 | 605 | 24 | 1700 | 49 | 49 | 1804 | 244 | 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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