
Surf Forecasts:
Block Island surf forecast from 30 Jul 2026:
- Best quality surf: Monday 3 Aug, 5PM (local time) - 5ft (1.6m), 7s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 3 Aug, 5PM (local time) - 5ft (1.6m), 7s period, S swell with 269 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 2AM (local time) - 3.5ft (1.0m), 8s 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 2AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.7m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 1.6m 7s and forecast to arrive on Monday (Aug 03) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Jul 30) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 31st Jul) | 3.5ft (1.0m) 8s |
| Best Surf | 5PM (Mon 3rd Aug) | 5ft (1.6m) 7s |
| Most Powerful | 5PM (Mon 3rd Aug) | 5ft (1.6m) 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 coming up for Block Island.
It’s a slow start, real quiet. The first few days are a write-off for any decent paddle surfing. We’ve got a bit of swell around on the 30th and 31st, but the wind is messy and the quality is just not there. A couple of those days have a clean-looking wave face, but the energy is weak and the cross-off wind isn’t doing us any favours. You’ll be fighting a fresh breeze and the sets are just unremarkable. Honestly, if you’re looking to get wet, you’re better off waiting.
The first real glimmer of hope shows up on Monday the 3rd of August in the afternoon. A quick shift to a westerly breeze and the waves come up a touch. We’re looking at a 5ft swell from the south, with a combined energy reading of 270 (moderate). The wave comment says “expect good surf conditions”, and I’ll take that. The wind is cross-off, so the faces should be clean. This is a point break that rarely breaks, so any time it’s on, it’s special. Just keep in mind, it’s inconsistent by nature, and when it’s working, the crowds are likely to be there.
After that, it goes flat and poor again for nearly a week. A few tiny bumps, but nothing worth the paddle out. Then we get a real tease for the weekend of the 8th and 9th of August. On the morning of Saturday the 8th, we get a 4ft swell from the SSE with a long period of 11 seconds. The combined energy jumps to 465 (moderate), but the wind is cross-shore and the conditions are described as “poor”. That’s a shame because the period is good.
The standout is Sunday the 9th of August. Morning session. We’ve got a solid 5ft swell from the south, a period of 12 seconds, and the combined energy is a beefy 705 (strong). The wind is a light NE breeze, cross-off, keeping it clean. The wave comment flat out says “expect very good surf conditions”. This is the best on offer. The swell direction is off the south, while the optimum for this spot is SE, so it’s not a perfect match, but the size and period make up for it. The waves will have good shape, and the clean conditions will make the paddle out a bit easier with those longer gaps between sets. If you can only pick one window, this is the one.
The following week shows a bit of size, with a 7ft swell from the SSE on the 12th of August. That’s pushing into expert territory (over 8ft is too big for most), and the cross-onshore wind is going to chop it up. The combined energy is over 1300 (very strong), but the conditions are poor. The period is 12 seconds, so it’s a groundswell, but the wind is a deal-breaker. It’s more of a kite surfing kind of setup than a clean paddle session.
So, to wrap it up: the first week is a bust. The best bet is Sunday morning, the 9th of August. It’s a long way out, so the forecast might wobble, but right now, that’s the one to circle on the calendar. For the rest, it’s a waiting game.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Thu morning. Warm (max 22°C on Fri afternoon, min 18°C on Fri morning). Winds decreasing (fresh winds from the NNE on Thu afternoon, calm by Fri morning). | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Mon morning. Warm (max 25°C on Tue afternoon, min 21°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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) | SSE 7 | SSE 9 | S 8 | S 8 | S 9 | S 8 | S 9 | S 8 | S 8 | S 7 | SSW 7 | S 8 | S 7 | SSE 8 | S 7 | S 8 | S 8 | S 8 | SSW 7 |
Wave Graph | |||||||||||||||||||
203 | 222 | 165 | 137 | 158 | 108 | 175 | 173 | 157 | 28 | 54 | 42 | 47 | 81 | 269 | 163 | 133 | 110 | 68 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | off | cross-off | cross | cross-off |
High Tide | 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 | 11:33AM0.91m | 11:50PM0.83m | 12:17PM0.93m | 00:39AM0.78m | ||||||
Low Tide | 3:15AM0.05m | 3:01PM0.11m | 3:42AM0.04m | 3:37PM0.11m | 4:06AM0.04m | 4:15PM0.11m | 4:32AM0.04m | 4:56PM0.12m | 5:02AM0.05m | 5:42PM0.13m | 5:39AM0.06m | 6:38PM0.14m | |||||||
— | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | |
8:06 | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | |
mm | 5 | 6 | 2 | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — | — | — | — |
Temp °C | 21 | 19 | 21 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 24 | 21 | 22 | 23 | 22 | 25 | 25 |
Feels °C | 21 | 16 | 18 | 17 | 21 | 21 | 21 | 22 | 21 | 21 | 22 | 23 | 23 | 22 | 22 | 22 | 20 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SSE 9 | S 8 | S 8 | S 9 | S 8 | S 9 | SE 9 | SE 9 | S 7 | S 9 | S 8 | S 7 | SSE 8 | S 7 | S 8 | S 8 | S 8 | SSW 7 |
203 | 222 | 165 | 137 | 158 | 108 | 175 | 3 | 12 | 28 | 39 | 42 | 47 | 81 | 269 | 163 | 133 | 110 | 68 | |
Swell 2 Height (m) Direction Period (s) | ENE 5 | S 8 | — | NE 5 | ENE 6 | ENE 6 | E 6 | E 6 | E 5 | SE 7 | SE 7 | SE 7 | SE 9 | — | E 8 | — | SE 9 | SE 8 | SE 8 |
16 | 4 | — | 28 | 7 | 3 | 3 | 1 | 1 | 17 | 7 | 7 | 3 | — | 1 | — | 3 | 3 | 10 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 6 | E 6 | — | S 10 | SE 9 | SE 8 | ESE 9 | — | — | — | — | — | — |
— | — | — | — | — | — | 3 | 1 | — | 7 | 12 | 11 | 7 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | ENE 5 | NE 5 | — | — | — | SW 3 | S 8 | S 8 | SSW 4 | SSW 7 | S 4 | SSW 4 | SSW 5 | — | WNW 3 | W 4 | WSW 4 | WSW 4 |
— | 56 | 57 | — | — | — | 2 | 173 | 157 | 20 | 54 | 12 | 5 | 52 | — | 8 | 9 | 9 | 5 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 0 | 0 | 24 | 24 | 24 | 767 | 204 | 709 | 24 | 608 | 178 | 0 | 0 | 24 | 1307 | 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.










