Surf Forecasts:
Block Island surf forecast from 26 Jul 2026:
- Best quality surf: Friday 31 Jul, 11AM (local time) - 2.5ft (0.8m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 11AM (local time) - 6ft (1.9m), 8s period, E swell with 464 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 11AM (local time) - 2.5ft (0.8m), 9s period with S 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 Friday (Jul 31) at 11AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.7m and 8s. 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 1.9m 8s and forecast to arrive on Thursday (Jul 30) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Jul 30) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Fri 31st Jul) | 2.5ft (0.8m) 9s |
| Best Surf | 11AM (Fri 31st Jul) | 2.5ft (0.8m) 9s |
| Most Powerful | 11AM (Thu 30th Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the menu for Block Island.
Honestly, it's a tough start. The whole first week is pretty much a write-off, with nothing much to get excited about. We're looking at a real dry spell until we get into the second week of the forecast. The water is a bit colder than usual for this time of year, sitting at 68°, so a good wetsuit is a must.
The first real glimmer of hope shows up on the morning of Friday, August 7th. That's a standout. The swell bumps up to 6 ft from the SSW, and we get that glassy wind. I'm talking dead calm, perfect conditions. The wave energy is decent (359), and the offshore wind direction from the NNE will have it looking clean. Block Island is a point break that rarely breaks, so when it's on, it's a special deal. The 6 ft size is a bit much for beginners, but for the intermediates, this is your window. Get on it before the crowds roll in, because it's a spot that's often packed when it's working.
The following morning, Saturday, August 8th, holds up pretty well too. The swell is a bit smaller at 5 ft from the SSW, but we've got a light cross-offshore breeze from the NNE keeping it clean. The overall energy (341) is still solid. It's not quite the glassy perfection of the day before, but it's a very good session.
Beyond that, the forecast gets messy again. Sunday and Monday the 9th and 10th of August show the swell dropping off and the wind turning onshore from the south, making a mess of things. So, the takeaway is simple: clear your calendar for the morning of Friday, August 7th, and you'll be rewarded.
Rusty, signing off.
Short Range ForecastHeavy rain (total 49mm), heaviest during Tue night. Warm (max 23°C on Tue afternoon, min 17°C on Sun morning). Winds increasing (light winds from the E on Mon morning, fresh winds from the SE by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Thu morning. Warm (max 21°C on Fri afternoon, min 18°C on Thu night). Winds decreasing (fresh winds from the NNE on Thu morning, light winds from the ESE by Fri night). | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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) | E 7 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SE 8 | S 5 | SSE 6 | SE 6 | SSE 7 | ESE 7 | E 8 | E 8 | S 10 | S 9 | S 9 | S 8 | S 8 | SW 7 | S 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 127 | 58 | 55 | 36 | 34 | 69 | 45 | 53 | 117 | 129 | 163 | 195 | 464 | 343 | 158 | 106 | 71 | 43 | 42 | 54 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross | on | on |
High Tide | 7:04PM0.89m | 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 | 12:20PM0.17m | 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 | — | — | 5:35 | — | — | 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 | — | — | — | — | — | — | 1 | 2 | 46 | 6 | 4 | 11 | 7 | 1 | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 20 | 19 | 21 | 21 | 22 | 23 | 22 | 20 | 20 | 20 | 19 | 19 | 20 | 20 | 21 | 20 | 19 | 20 | 20 |
Feels °C | 17 | 19 | 18 | 18 | 19 | 19 | 20 | 21 | 21 | 16 | 18 | 18 | 15 | 14 | 17 | 20 | 20 | 21 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | E 7 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SE 8 | E 6 | E 6 | SSE 8 | SSE 7 | S 7 | S 9 | SSE 10 | E 8 | S 9 | S 9 | S 8 | S 8 | S 8 | S 7 |
| kJ | 127 | 58 | 55 | 36 | 34 | 69 | 45 | 3 | 3 | 42 | 163 | 26 | 103 | 125 | 129 | 106 | 71 | 43 | 42 | 18 | 15 |
Swell 2 Height (m) Direction Period (s) | S 5 | S 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 9 | E 8 | — | E 8 | SSE 7 | S 9 | — | S 10 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | 1 | 3 | 24 | 19 | 12 | 6 | 7 | 6 | 6 | — | 1 | 10 | 106 | — | 158 | 55 | 39 | 25 | 17 | 16 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | S 6 | — | — | — | — | — | — | — | — | S 8 | — | — | — | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 7 |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | 5 | — | — | — | 4 | 3 | 3 | 3 | 3 | 5 |
Wind waves Height (m) Direction Period (s) | — | E 6 | — | — | — | SSW 3 | SSW 5 | S 5 | SSE 6 | SE 6 | E 4 | ESE 7 | E 8 | E 8 | — | WNW 3 | SW 2 | SW 3 | SW 5 | SW 7 | SSW 4 |
| kJ | — | 27 | — | — | — | 3 | 35 | 53 | 117 | 129 | 20 | 195 | 464 | 343 | — | 2 | 2 | 6 | 10 | 54 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 25 | 1804 | 131 | 225 | 720 | 152 | 141 | 99 | 47 | 39 | 29 | 24 | 0 | 26 | 54 | 648 | 1493 | 152 |
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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