Surf Forecasts:
Block Island surf forecast from 20 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 11PM (local time) - 11ft (3.5m), 10s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 11ft (3.5m), 10s period, SSW swell with 2,598 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 11PM (local time) - 11ft (3.5m), 10s 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 Wednesday (Jul 22) at 11PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 3.5m and 10s. 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 3.5m 10s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Jul 24) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 22nd Jul) | 11ft (3.5m) 10s |
| Best Surf | 11PM (Wed 22nd Jul) | 11ft (3.5m) 10s |
| Most Powerful | 11PM (Wed 22nd Jul) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, let’s take a look at what’s on offer for Block Island over the next couple of weeks.
Honestly, the outlook is a bit of a heartbreaker for us here. The first real chance to paddle out isn’t until Thursday the 23rd of July. Before that, we’re dealing with a run of poor conditions – onshore winds, choppy water, and weak swell. There’s a period from now until Wednesday that’s basically a write-off, with only small, messy waves on offer.
The standout session is definitely Thursday morning, the 23rd. We’ve got a solid 8ft swell rolling in from the south with a 9-second period, which is a nice bit of groundswell. The wind is offshore from the northwest, cleaning things right up. The combined energy is strong (936). This is a point break, so that longer period should wrap in nicely and give us some proper shape. The water is a bit colder than normal for this time of year, sitting at 67°, about 3° off the average. Keep in mind, this spot rarely breaks, so when it’s on like this, you’ve got to jump on it. Crowds are often a problem here, so expect some company.
Thursday afternoon (23rd) is still surfable with 6ft south swell, but the wind swings cross-shore, so it won’t be as clean as the morning. Still, it’s a decent option.
Friday the 24th offers a small, glassy morning with 3ft south swell. It’s clean, but the energy is low (179). It’s more of a longboard or a fun log session.
After that, things drop off again. We get a few more pulses of energy, like Wednesday the 29th afternoon with a 6ft south swell and a 10-second period, and clean cross-offshore wind, but the overall quality is still marginal. The combined energy is moderate (618). The 30th has some size but gets blown out by fresh onshore winds.
Into the second week, the end of July and start of August looks pretty flat and unsurfable, with small, weak swells and poor winds. There’s a slight uptick on the 2nd of August with 5ft swell, but it’s onshore and choppy. Not worth getting excited about.
To be honest, the only real window to score is the morning of Thursday the 23rd. That’s your best bet. The rest of the period is mostly a waiting game.
Rusty.
Short Range ForecastHeavy rain (total 29mm), heaviest during Tue night. Warm (max 24°C on Wed afternoon, min 17°C on Wed night). Winds decreasing (strong winds from the SW on Tue night, light winds from the NNW by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Thu night, min 18°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | SSW 7 | SSW 7 | SSW 7 | SSE 6 | SSW 7 | SSW 9 | SSW 8 | S 10 | S 9 | S 8 | SSW 8 | S 8 | SSW 8 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 71 | 69 | 36 | 194 | 462 | 1312 | 954 | 1523 | 861 | 511 | 235 | 131 | 96 | 77 | 54 | 65 | 71 | 90 | 86 | 69 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross | cross-on | cross-on | off | off | cross | glassy | glassy | on | glassy | cross-on | cross-on | cross-off | cross | on | glassy |
High Tide | 1:44AM0.71m | 2:35PM0.87m | 2:44AM0.66m | 3:35PM0.84m | 3:48AM0.62m | 4:34PM0.84m | 4:50AM0.62m | 5:29PM0.84m | 5:46AM0.63m | 6:20PM0.87m | 6:36AM0.66m | 7:04PM0.89m | ||||||||
Low Tide | 8:13PM0.18m | 8:00AM0.14m | 9:16PM0.21m | 8:51AM0.18m | 10:16PM0.22m | 9:47AM0.20m | 11:12PM0.22m | 10:41AM0.20m | 00:03AM0.20m | 11:33AM0.19m | 00:49AM0.18m | 12:20PM0.17m | 1:30AM0.14m | |||||||
 |  |  |  |  |  | |  | | | | | | | | | | | |  | |
 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — |
 | 8:14 | — | — | 8:13 | — | — | 8:12 | — | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — |
mm | — | — | — | 2 | 22 | 3 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 22 | 22 | 22 | 24 | 24 | 19 | 23 | 24 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 21 | 20 |
Feels °C | 19 | 20 | 19 | 20 | 20 | 22 | 21 | 22 | 14 | 20 | 22 | 20 | 18 | 19 | 19 | 18 | 17 | 16 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 8 | SSW 7 | — | — | — | — | S 10 | S 9 | S 8 | SSW 8 | S 8 | SSW 8 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | 71 | 3 | 36 | — | — | — | — | 1523 | 861 | 511 | 235 | 131 | 96 | 77 | 54 | 65 | 71 | 90 | 86 | 69 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | — | — | — | — | — | SE 7 | SE 8 | SE 7 | SE 7 | SE 7 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SW 5 | — | SSW 5 |
| kJ | 6 | 6 | 6 | — | — | — | — | — | 75 | 82 | 71 | 48 | 64 | 26 | 7 | 4 | 3 | 1 | — | 2 |
Swell 3 Height (m) Direction Period (s) | SE 8 | — | — | — | — | — | — | — | — | — | — | — | ENE 3 | — | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 7 | SSE 4 | SSE 6 | SSW 7 | SSW 9 | SSW 8 | — | N 3 | — | N 3 | NNE 4 | NE 3 | — | — | — | — | — | ESE 4 | — |
| kJ | — | 69 | 32 | 194 | 462 | 1312 | 954 | — | 5 | — | 2 | 10 | 2 | — | — | — | — | — | 13 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2593 | 634 | 1148 | 1148 | 605 | 24 | 195 | 0 | 0 | 24 | 0 | 0 | 24 | 24 | 25 | 749 | 156 | 25 | 482 | 24 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest