Surf Forecasts:
Block Island surf forecast from 8 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 8PM (local time) - 10ft (3.0m), 7s period, SW swell with 754 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 3.0m 7s and forecast to arrive on Wednesday (Jul 15) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Jul 10) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Wed 15th Jul) | 10ft (3.0m) 7s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Alright, let’s break down the Block Island picture over this 16-day window, in feet and Fahrenheit.
It’s a lean outlook, no two ways about it. This break *rarely breaks* in the best of times, and for most of this stretch, it’s a total washout. There’s a long waiting game from the start all the way through to late July – over two weeks of small, wind-mangled surf. Swells barely hit 3ft, wind is mostly onshore or cross-shore, and the energy readings are all weak, mostly under 100. Nothing worth dragging your board down the cliffs for.
The only real shot you get is on the morning of Wednesday July 22nd. Block Island picks up a 1.7m (about 6ft) SSW swell with a period of 7 seconds, and the combined energy climbs to 286 – that’s moderate, solid enough to wrap into this point. The wind goes glassy from the east at just 5 km/h (about 3 mph). That still air makes this a standout. Expect clean, peeling waves. But remember – this break *rarely breaks*, so when it does, it’s a rare treat. Crowds are often a factor, so get there early. Water temp is 20°C (about 68°F), right around average for July.
By the afternoon, the light south wind comes up and the quality drops off a cliff. The rest of the week looks poor again. So mark that Wednesday morning as your only real window. It’s a one-shot deal.
Rusty
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Warm (max 27°C on Fri afternoon, min 20°C on Sat morning). Winds increasing (light winds from the SSW on Wed afternoon, fresh winds from the SW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Sat afternoon, min 18°C on Sun night). Winds decreasing (fresh winds from the ENE on Sat afternoon, light winds from the SSE by Mon night). | ||||||||||||||||||||
Wed 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | SW 4 | SW 5 | SSW 5 | SSW 6 | SSW 6 | S 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SE 9 | SE 9 | SE 9 | ESE 7 | SW 4 | SW 6 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 117 | 54 | 37 | 43 | 41 | 33 | 64 | 103 | 89 | 52 | 45 | 62 | 31 | 16 | 13 | 13 | 41 | 21 | 42 | 266 | 226 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-on | cross-off | cross | off | cross-off | cross | cross-off | cross | cross-on | cross | cross | on | cross-on | cross | cross-on | cross | cross |
High Tide | 2:35PM0.92m | 3:00AM0.72m | 3:38PM0.97m | 4:07AM0.72m | 4:45PM1.02m | 5:15AM0.75m | 5:51PM1.08m | 6:19AM0.80m | 6:53PM1.12m | 7:18AM0.85m | 7:50PM1.15m | 8:15AM0.91m | 8:43PM1.14m | 9:10AM0.96m | |||||||
Low Tide | 9:31PM0.14m | 8:46AM0.05m | 10:44PM0.11m | 9:48AM0.03m | 11:48PM0.07m | 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 | ||||||||
 |  |  | |  | | | | | |  | | | | | | | | | | | |
 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 |
 | 8:21 | — | — | 8:20 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:17 | — | 8:16 |
mm | — | — | — | — | 8 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 22 | 22 | 23 | 27 | 27 | 23 | 24 | 21 | 21 | 22 | 20 | 19 | 19 | 20 | 20 | 21 | 21 | 24 |
Feels °C | 21 | 19 | 21 | 20 | 21 | 24 | 25 | 27 | 22 | 20 | 18 | 18 | 18 | 16 | 17 | 17 | 20 | 19 | 17 | 16 | 22 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 7 | E 8 | E 8 | SSW 6 | E 8 | S 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | E 5 | ESE 6 | ESE 6 | SE 9 | ESE 7 | ESE 7 | SE 9 | SE 9 |
| kJ | 117 | 54 | 26 | 32 | 31 | 33 | 10 | 103 | 89 | 52 | 45 | 62 | 31 | 12 | 12 | 7 | 41 | 21 | 20 | 21 | 12 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SSW 6 | SE 10 | SE 10 | SE 10 | E 8 | SE 9 | E 8 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SSW 7 | SSW 7 | SE 9 | S 6 | SE 9 | SE 9 | — | E 7 |
| kJ | 9 | 7 | 14 | 15 | 15 | 20 | 14 | 10 | 14 | 14 | 14 | 15 | 15 | 16 | 9 | 13 | 7 | 13 | 13 | — | 1 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | — | — | — | SE 10 | SE 10 | SE 10 | E 7 | E 7 | E 7 | E 8 | — | SE 9 | SE 9 | S 6 | E 7 | S 5 | — | — | S 17 |
| kJ | 14 | 14 | — | — | — | 15 | 14 | 14 | 4 | 1 | 4 | 4 | — | 14 | 13 | 7 | 1 | 2 | — | — | 6 |
Wind waves Height (m) Direction Period (s) | — | WSW 3 | SW 4 | SW 5 | SSW 5 | — | SSW 6 | — | ENE 3 | E 4 | E 4 | E 5 | E 4 | — | — | — | — | SSW 6 | SW 4 | SW 6 | SW 7 |
| kJ | — | 8 | 37 | 43 | 41 | — | 64 | — | 4 | 7 | 10 | 18 | 13 | — | — | — | — | 15 | 42 | 266 | 226 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 131 | 131 | 131 | 195 | 24 | 117 | 24 | 25 | 634 | 634 | 25 | 769 | 645 | 729 | 847 | 749 | 236 | 204 | 336 | 24 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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