Surf Forecasts:
Block Island surf forecast from 3 Aug 2026:
- Best quality surf: Monday 3 Aug, 11PM (local time) - 8ft (2.5m), 9s period, SSW swell with offshore winds.
- Most powerful swell: Monday 3 Aug, 5PM (local time) - 10ft (3.0m), 9s period, S swell with 1,405 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 11PM (local time) - 8ft (2.5m), 9s period with SSW 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 Monday (Aug 03) at 11PM. The primary swell is predicted to be 2.5m and 9s period. 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 3.0m 9s and forecast to arrive on Monday (Aug 03) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Aug 05) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 3rd Aug) | 8ft (2.5m) 9s |
| Best Surf | 11PM (Mon 3rd Aug) | 8ft (2.5m) 9s |
| Most Powerful | 5PM (Mon 3rd Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, listen up. Rusty here. Let’s get straight into it for Block Island.
Alright, I gotta be straight with you. The next couple of weeks are looking pretty flat and grim, with a whole lot of nothing on offer. You’re looking at a long stretch of poor conditions, mostly blown out or tiny. There’s a real gap from now until the morning of Tuesday, the 4th of August, where things are just not worth paddling out for. The curse of the summer doldrums is on us.
Now, let’s talk about the one and only real window of opportunity, and it's a long way off. On Tuesday the 18th of August, we finally get a pulse of life. The morning is the standout. The wind will be light offshore from the NNW, which is perfect for cleaning things up. We’ll be looking at a solid 7 ft swell from the SW. The wave energy is moderate (317), and with a period of 6 seconds, it’s a short-period swell, so it won't have the power of a groundswell, but the clean conditions will make it rideable. The afternoon is a bit bigger at 8 ft from the SW, with moderate energy (543), and a cross-off wind from the W keeping it fairly clean. This is a point break, and it’s rated for intermediates, so that size is pushing it for beginners. For the experienced crew, this is the one to aim for. Remember, this is a rare-breaking spot, so when it comes alive, you better be there. The water is a bit colder than normal for this time of year at 69°.
Other than that, the only other mentionable is the morning of Tuesday the 4th of August. Clear skies, glassy conditions with a light W wind, and a small 4 ft swell from the SSW. The wave energy is weak (234). It’s small, but it will be clean. Good for a longboard if you’re desperate. The rest of the period is a write-off – either too much wind or not enough swell.
So, to sum it up: wait for that Tuesday the 18th of August. That’s your best bet. Everything else is a skip.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Mon afternoon. Warm (max 24°C on Mon morning, min 20°C on Mon night). Winds decreasing (strong winds from the SSW on Mon morning, calm by Tue morning). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Warm (max 29°C on Fri afternoon, min 25°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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 8 | S 9 | S 9 | SSW 8 | SSW 8 | SSW 7 | S 8 | SSW 7 | S 6 | S 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1272 | 1405 | 617 | 197 | 127 | 71 | 259 | 108 | 29 | 94 | 117 | 202 | 94 | 80 | 65 | 37 | 37 | 46 | 53 | 68 | 115 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | glassy | on | cross-on | cross-off | cross-on | cross-off | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 11:33AM0.91m | 11:50PM0.83m | 12:17PM0.93m | 00:39AM0.78m | 1:08PM0.94m | 1:35AM0.74m | 2:09PM0.95m | 2:40AM0.71m | 3:20PM0.97m | 3:52AM0.71m | 4:35PM1.00m | 5:04AM0.75m | 5:43PM1.04m | ||||||||
Low Tide | 5:42PM0.13m | 5:39AM0.06m | 6:38PM0.14m | 6:24AM0.07m | 7:51PM0.16m | 7:16AM0.08m | 9:20PM0.16m | 8:19AM0.08m | 10:36PM0.14m | 9:31AM0.06m | 11:40PM0.10m | 10:49AM0.03m | 00:36AM0.05m | ||||||||
 |  |  |  | | |  |  |  | | |  | | | | | |  | | | | |
 | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — |
mm | 4 | 19 | 3 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — |
Temp °C | 24 | 23 | 24 | 23 | 24 | 24 | 23 | 24 | 24 | 25 | 27 | 26 | 26 | 29 | 29 | 27 | 28 | 26 | 26 | 28 | 25 |
Feels °C | 21 | 19 | 23 | 24 | 22 | 23 | 25 | 23 | 25 | 27 | 27 | 26 | 28 | 28 | 28 | 29 | 27 | 25 | 27 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | — | — | S 9 | SSW 8 | SSW 8 | SSW 7 | S 8 | SE 7 | S 6 | SE 8 | SE 8 | SE 8 | SSW 6 | SE 8 | SE 8 | SSW 6 | SE 8 | SE 8 | SSW 6 | SE 7 | SSW 6 |
| kJ | — | — | 617 | 197 | 127 | 71 | 259 | 29 | 29 | 10 | 9 | 9 | 94 | 9 | 16 | 37 | 16 | 14 | 53 | 2 | 115 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 7 | SE 7 | SE 7 | E 10 | E 10 | SE 7 | E 10 | E 9 | E 10 | SE 8 | E 9 | E 9 | SSE 8 | E 9 | E 9 | SE 7 | E 9 | SE 10 |
| kJ | — | — | — | 37 | 51 | 55 | 2 | 2 | 21 | 2 | 2 | 2 | 9 | 2 | 2 | 26 | 1 | 2 | 8 | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 9 | E 11 | — | E 10 | E 10 | E 10 | — | — | E 10 | — | — | E 9 | — | — | E 8 | — | SE 8 |
| kJ | — | — | — | — | 2 | 2 | — | 2 | 2 | 2 | — | — | 2 | — | — | 1 | — | — | 1 | — | 2 |
Wind waves Height (m) Direction Period (s) | S 8 | S 9 | NNW 3 | — | — | — | N 3 | SSW 7 | SSW 4 | S 6 | SSW 6 | SSW 6 | — | SSW 6 | SSW 6 | — | SSW 6 | SSW 6 | — | SSW 6 | — |
| kJ | 1272 | 1405 | 4 | — | — | — | 6 | 108 | 10 | 94 | 117 | 202 | — | 80 | 65 | — | 37 | 46 | — | 68 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 398 | 201 | 0 | 0 | 24 | 24 | 0 | 24 | 24 | 26 | 24 | 24 | 24 | 226 | 24 | 24 | 398 | 102 | 36 | 221 | 341 |
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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