
Surf Forecasts:
Block Island surf forecast from 31 Jul 2026:
- Best quality surf: Tuesday 4 Aug, 2AM (local time) - 7ft (2.2m), 8s period, S swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 8PM (local time) - 7ft (2.2m), 8s period, S swell with 582 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 2AM (local time) - 7ft (2.2m), 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 Tuesday (Aug 04) at 2AM. The primary swell is predicted to be 2.2m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 2.2m 8s and forecast to arrive on Monday (Aug 03) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 4th Aug) | 7ft (2.2m) 8s |
| Best Surf | 2AM (Tue 4th Aug) | 7ft (2.2m) 8s |
| Most Powerful | 8PM (Mon 3rd Aug) | 7ft (2.2m) 8s |
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 the next 16 days for the Block Island area.
First thing you need to know: the water is sitting at 69°F right now, which is a bit colder than normal for this time of year—about 3°F off the average, so you’ll feel that chill if you’re not suited up properly.
The pattern is a long, frustrating wait. Honestly, the first week and a half is pretty much a write-off for any decent paddle surfing. From Friday the 31st of July all the way through to Sunday the 9th of August, the surf report is just poor. We’ve got small, weak swell—mostly around 2ft to 5ft—with short periods (6 to 9 seconds), and the wind is almost always cross-on or onshore, often fresh to strong. The combined wave energy barely gets into the moderate range, hovering between 60 and 455 (455 is moderate, but the wind chops it to bits). The swell is coming from the S or SSW, which is okay for Block Island, but the wind is just ruining it. Honestly, on Monday the 3rd of August, with a 7ft swell and 25 mph cross-on wind, that setup looks more interesting for kite surfing than paddle surfing. Not worth getting wet for.
Now, there is a light at the end of the tunnel. Tuesday the 4th of August is the first glimmer. In the morning, we get a glassy session with the wind swinging light easterly at 3 mph. The swell is 6ft from the SSW with a period of 8 seconds, and the combined energy is 388 (moderate). It’s the best surf conditions we’ve seen so far, but still not a standout—just a taste of what’s to come.
The real standout, the one you’ve been waiting for, is Monday the 10th of August. The morning is glassy, dead calm, with a 7ft swell from the south at 9 seconds. The combined energy jumps to 780 (strong). That’s a serious pulse of energy. The afternoon cleans up with a light NE cross-off breeze at 9 mph, holding the 6ft swell at 9 seconds (energy 615, still strong). This is the best on offer, no question. Block Island is a point break, so it’s exposed to the S swell, and with that glassy or clean wind, the waves will be well-shaped and lined up. This is a day for the intermediate surfer—the 7ft is a bit much for beginners, but it’s not too heavy for the more experienced. The crowds? Block Island is “often” crowded, so expect company, but the quality will be worth sharing the water.
After that, the surf drops off again. From Tuesday the 11th onward, the swell fades to under 4ft, periods shrink, and the wind goes back to onshore or cross-on. The last day of the forecast, Saturday the 15th of August, has a 4ft swell from the SW but with a short 5-second period and onshore wind—not worth paddling out for.
So, to sum it up: a long, flat, windy first week, then a brief moment of glassy goodness on the 10th. That’s your window. Mark it in your calendar.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 24°C on Sat morning, min 19°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Mon night. Warm (max 24°C on Mon morning, min 21°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | S 9 | S 8 | S 8 | SSW 8 | S 8 | S 8 | S 7 | S 7 | SSW 7 | S 6 | S 8 | S 8 | SSW 8 | SSW 7 | S 7 | S 7 | SSW 6 | S 5 | SSW 6 | SSW 6 | SSW 6 |
Wave Graph | |||||||||||||||||||||
158 | 111 | 108 | 109 | 57 | 61 | 51 | 24 | 16 | 123 | 454 | 551 | 385 | 220 | 117 | 88 | 32 | 61 | 119 | 145 | 170 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | cross | cross-off | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 1:08PM0.94m | 1:35AM0.74m | 2:09PM0.95m | 2:40AM0.71m | |||||||
Low Tide | 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 | 6:24AM0.07m | 7:51PM0.16m | 7:16AM0.08m | 9:20PM0.16m | ||||||||
5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | |
— | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — | |
mm | — | — | — | — | — | — | — | — | 2 | 1 | 2 | 7 | 3 | — | — | — | — | — | — | — | — |
Temp °C | 20 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 23 | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 25 | 25 |
Feels °C | 20 | 23 | 22 | 24 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 22 | 26 | 24 | 25 | 26 | 25 | 25 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 8 | S 8 | SSW 8 | S 8 | S 8 | SE 7 | S 7 | SSW 7 | SSE 8 | E 8 | — | SSW 8 | SSW 7 | S 7 | S 7 | SSW 6 | SE 6 | SE 7 | SE 7 | SE 7 |
158 | 111 | 108 | 109 | 57 | 61 | 17 | 24 | 15 | 20 | 1 | — | 385 | 220 | 117 | 88 | 32 | 6 | 8 | 8 | 9 | |
Swell 2 Height (m) Direction Period (s) | ENE 6 | ESE 9 | SE 9 | SE 9 | SE 7 | SE 7 | S 9 | SE 7 | SE 6 | SE 9 | — | — | SE 8 | SE 8 | E 11 | E 10 | E 10 | SE 8 | E 10 | E 10 | E 10 |
7 | 9 | 13 | 19 | 7 | 17 | 15 | 18 | 15 | 3 | — | — | 3 | 3 | 2 | 2 | 2 | 10 | 2 | 2 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | E 6 | E 6 | E 6 | SE 8 | ESE 8 | SE 9 | S 8 | SSE 9 | E 8 | — | — | — | — | — | — | SE 8 | E 11 | — | — | SE 11 |
— | 3 | 1 | 1 | 11 | 7 | 3 | 12 | 16 | 1 | — | — | — | — | — | — | 3 | 2 | — | — | 5 | |
Wind waves Height (m) Direction Period (s) | — | SW 2 | SW 4 | — | SSW 4 | SSW 4 | S 7 | S 3 | S 4 | S 6 | S 8 | S 8 | — | — | — | SE 7 | SE 7 | S 5 | SSW 6 | SSW 6 | SSW 6 |
— | 1 | 17 | — | 13 | 12 | 51 | 6 | 12 | 123 | 454 | 551 | — | — | — | 31 | 21 | 61 | 119 | 145 | 170 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 26 | 767 | 249 | 24 | 1148 | 767 | 1528 | 178 | 0 | 0 | 24 | 24 | 26 | 634 | 26 | 201 | 204 | 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.











