Surf Forecasts:
Block Island surf forecast from 16 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 8PM (local time) - 6.5ft (2.0m), 9s period, S swell with glassy winds.
- Most powerful swell: Wednesday 22 Jul, 8AM (local time) - 8ft (2.5m), 9s period, SSW swell with 1,033 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 4.5ft (1.3m), 8s 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 Sunday (Jul 19) at 11PM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 12s. 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 2.5m 9s and forecast to arrive on Wednesday (Jul 22) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jul 23) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 19th Jul) | 4.5ft (1.3m) 8s |
| Best Surf | 8PM (Wed 22nd Jul) | 6.5ft (2.0m) 9s |
| Most Powerful | 8AM (Wed 22nd Jul) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get into the Block Island outlook.
Honestly, the first week and a half is a write-off. The water is a bit colder than normal for July, sitting at about 68°F, which is a noticeable chill for the season. The first real swell worth paddling for doesn't show up until Sunday, July 19th. Before that, it's a long stretch of tiny, weak, messy waves with strong onshore winds. The only break we’ve got is Block Island, a point that rarely breaks, so when it does, it’s a special thing.
The standout window is Sunday, July 19th. The morning brings a solid 6ft swell from the SW with a clean cross-offshore breeze from the W. The wave energy is solid, and it's clean. The afternoon is even better, with the swell easing slightly to 6ft and the wind staying light and cross-off. This is the best of the 16-day window, no question. It’s a point, so it’ll handle the swell well. Just watch for the crowd.
Wednesday, July 22nd is a wild card. The swell jumps to 8ft from the SSW, but the morning is blown out by a near gale. The afternoon, though, the wind swings hard offshore from the NW, and while the swell drops to 8ft, the energy is massive. That’s a serious amount of water moving. This is expert-only territory—too big for most, and the crowd will be a factor. If you’re a pro, it’s worth a look.
The rest of the outlook is a mix of small, weak, and wind-affected waves. There’s a brief moment on Saturday, July 25th afternoon with a glassy 4ft swell from the SE, but it’s very ordinary. For the most part, the combination of small swell and poor wind means you’re better off keeping the board in the car. It’s a tough run, but it’s Block Island—it tends not to stay poor for long, and forecasts can change.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat night. Warm (max 26°C on Thu night, min 20°C on Fri morning). Winds increasing (light winds from the N on Thu night, strong winds from the SW by Sat night). | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Wed morning. Warm (max 27°C on Sun afternoon, min 18°C on Mon morning). Winds increasing (light winds from the SE on Mon morning, near gales from the SSW by Wed morning). | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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) | SW 5 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 4 | SSW 5 | SW 8 | SSW 8 | SSW 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 6 | SSW 9 | SSW 9 | S 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 56 | 25 | 22 | 26 | 27 | 21 | 18 | 110 | 358 | 372 | 168 | 173 | 165 | 153 | 107 | 83 | 259 | 1027 | 878 | 392 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | cross-on | cross | cross-on | cross-on | cross | cross-off | cross-off | off | on | cross-on | on | on | cross-on | cross-on | cross-on | off | off |
High Tide | 10:23PM1.05m | 10:56AM1.00m | 11:11PM0.97m | 11:49AM0.98m | 00:00AM0.88m | 12:42PM0.95m | 00:50AM0.79m | 1:37PM0.91m | 1:44AM0.71m | 2:35PM0.87m | 2:44AM0.66m | 3:35PM0.84m | 3:48AM0.62m | |||||||
Low Tide | 4:06PM-0.04m | 4:57AM-0.05m | 5:07PM0.01m | 5:43AM-0.02m | 6:08PM0.07m | 6:28AM0.03m | 7:10PM0.13m | 7:13AM0.09m | 8:13PM0.18m | 8:00AM0.14m | 9:16PM0.21m | 8:51AM0.18m | 10:16PM0.22m | |||||||
 |  |  | | | |  |  | | | | | | | |  |  |  |  | | |
 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — |
 | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | 1 | 5 | — | — | — | — | — | — | — | 1 | 1 | 4 | 22 | 2 |
Temp °C | 25 | 26 | 22 | 25 | 25 | 23 | 22 | 23 | 22 | 27 | 25 | 21 | 21 | 21 | 22 | 24 | 25 | 24 | 23 | 20 |
Feels °C | 21 | 24 | 19 | 19 | 21 | 21 | 20 | 20 | 21 | 24 | 20 | 19 | 17 | 18 | 21 | 21 | 19 | 19 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SW 5 | SSW 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SW 8 | SSW 8 | SSW 8 | S 8 | S 8 | SE 9 | SE 8 | SE 8 | SE 11 | SSW 9 | S 9 | S 8 |
| kJ | 3 | 25 | 22 | 3 | 3 | 3 | 3 | 3 | 358 | 372 | 168 | 173 | 165 | 3 | 3 | 3 | 5 | 1027 | 710 | 392 |
Swell 2 Height (m) Direction Period (s) | S 15 | SE 9 | NNE 3 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | NNE 3 | SE 12 | SE 12 | SE 12 | SE 11 | — | — | — | — |
| kJ | 4 | 3 | 1 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 1 | 6 | 6 | 5 | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SE 15 | SE 8 | — | — | E 8 | — | E 8 | — | — | SE 12 | SE 12 | — | SE 12 | SE 12 | — | — | — | — | — |
| kJ | — | 9 | 3 | — | — | 1 | — | 1 | — | — | 6 | 6 | — | 6 | 6 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | — | — | SSW 6 | SSW 6 | SSW 5 | SSW 4 | SSW 5 | — | — | NNW 3 | — | — | S 8 | S 7 | S 7 | S 6 | — | SSW 9 | NNW 4 |
| kJ | 56 | — | — | 26 | 27 | 21 | 18 | 110 | — | — | 7 | — | — | 153 | 107 | 83 | 259 | — | 878 | 17 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1148 | 634 | 1067 | 634 | 1084 | 642 | 315 | 133 | 24 | 24 | 0 | 24 | 24 | 24 | 1084 | 1148 | 1148 | 1528 | 24 | 25 |
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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