
Surf Forecasts:
Block Island surf forecast from 14 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 2AM (local time) - 4.5ft (1.4m), 8s period, S swell with offshore winds.
- Most powerful swell: Wednesday 15 Jul, 2AM (local time) - 8ft (2.5m), 7s period, SW swell with 627 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 2AM (local time) - 4.5ft (1.4m), 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 (Jul 21) at 2AM. The primary swell is predicted to be 1.4m and 8s 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 2.5m 7s and forecast to arrive on Wednesday (Jul 15) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Jul 15) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 21st Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 2AM (Tue 21st Jul) | 4.5ft (1.4m) 8s |
| Most Powerful | 2AM (Wed 15th Jul) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's talk about what's on offer for Block Island over the next couple of weeks. I'll be straight with you, it's a tough stretch for the paddle crew.
The pattern starts off pretty grim. For the first several days, from Tuesday the 14th right through to Sunday the 19th, conditions are just plain poor. We're looking at a persistent cross-shore or cross-onshore wind, mostly from the southwest, that's going to keep things bumpy and lumpy. The swell is weak, with combined energy values barely hitting triple digits, and the periods are short – around 5 to 6 seconds. Honestly, it's not worth getting wet for a surfer looking for anything decent. The water is sitting at about 67°, which is a bit colder than usual for this time of year.
The first real glimmer of hope comes on Monday the 20th. The morning sees a clean, cross-offshore breeze out of the west. This cleans up a 6 ft swell coming from the south with an 8-second period. The combo energy jumps to a moderate 399. The wind is clean, so the surf will have shape, but the onshore kicks in hard by the afternoon, so you need to be on it early.
The standout session of the whole forecast? That has to be Tuesday the 21st. We get a morning with a clean, light cross-offshore wind from the WNW. Swell is a solid 5 ft from the south, period at 8 seconds, and the book says "expect good surf conditions." The combined energy is a healthy 258. With a gentle offshore breeze, it'll be glassy and lined up. This is the one to circle. Block Island is a point break that rarely breaks, so when it lines up like this, you don't miss it. The optimum swell direction from the guidance is SE, so this S swell is pushing the right buttons. The crowds can be a problem here – it is often busy, so expect company.
Looking further out, Friday the 24th and Saturday the 25th have longer-period energy rolling in, with 13-second and 11-second swells respectively, and combined energy readings in the 335 to 381 range. That's a lot of juice. But the wind is a mess – onshore or cross-shore from the southwest – so while there's plenty of water moving, it'll be chopped up and ugly for a standard paddle surfer. The long period might make it break a bit straight on the beach, but with those winds, it looks more interesting for a kite session than surfing.
The very end of the window, on Monday the 27th, has some onshore southerly swells around 4 ft to 4 ft, but the winds are light, which could mean a bit of shape. The energy is moderate, but the quality will be marginal.
So, if you're waiting for the clear winner, it's the morning of Tuesday the 21st. The Monday 20th morning is a decent backup, but the 21st has the best balance of clean wind and decent swell for the point. The rest of the 16 days is mostly a write-off for decent surf. As we always say, forecasts can change, so keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed night, min 20°C on Thu night). Winds decreasing (strong winds from the SW on Tue afternoon, light winds from the NNW by Wed night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Sun night, min 20°C on Fri morning). Mainly strong winds. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
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) | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SSW 6 | SSW 5 | S 6 | S 5 | S 5 | SSE 5 | SSW 5 | SSW 6 | SSW 6 | S 8 | S 8 | S 8 |
Wave Graph | |||||||||||||||||||||
87 | 258 | 627 | 195 | 193 | 63 | 57 | 75 | 61 | 27 | 21 | 22 | 14 | 12 | 32 | 22 | 86 | 242 | 396 | 412 | 264 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross | off | cross-on | cross | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-on | off |
High Tide | 8:15AM0.91m | 8:43PM1.14m | 9:10AM0.96m | 9:34PM1.10m | 10:03AM0.99m | 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 | |||||||
Low Tide | 2:05PM-0.09m | 3:23AM-0.06m | 3:06PM-0.07m | 4:10AM-0.07m | 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 | ||||||||
5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | |
— | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — |
Temp °C | 22 | 23 | 25 | 27 | 30 | 31 | 26 | 28 | 29 | 22 | 24 | 24 | 23 | 22 | 22 | 23 | 24 | 25 | 24 | 25 | 25 |
Feels °C | 18 | 18 | 24 | 25 | 29 | 30 | 25 | 24 | 26 | 22 | 21 | 22 | 23 | 18 | 24 | 23 | 23 | 24 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | SSW 6 | ESE 9 | SE 9 | SSW 6 | SSW 6 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 5 | SE 12 | SE 12 | S 8 | S 8 | S 8 |
13 | 13 | 13 | 12 | 8 | 63 | 7 | 3 | 61 | 27 | 3 | 3 | 3 | 3 | 3 | 4 | 6 | 6 | 396 | 412 | 264 | |
Swell 2 Height (m) Direction Period (s) | E 7 | E 7 | — | S 17 | S 17 | NNW 3 | S 15 | S 15 | SE 15 | E 4 | — | SE 14 | SE 13 | SE 13 | SE 13 | SE 8 | SE 12 | E 11 | E 12 | SE 12 | — |
1 | 1 | — | 6 | 5 | 2 | 4 | 4 | 9 | 2 | — | 8 | 7 | 7 | 7 | 3 | 6 | 2 | 3 | 6 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | ESE 9 | — | — | — | SE 8 | SE 14 | E 9 | E 8 | — | — | SE 13 | — | — | — | — | — |
— | — | — | — | — | 8 | — | — | — | 3 | 8 | 2 | 1 | — | — | 7 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | N 3 | SSW 6 | SW 6 | E 3 | — | SSW 5 | S 6 | S 5 | S 5 | SSE 5 | SSW 5 | SSW 6 | SSW 6 | — | — | — |
87 | 258 | 627 | 195 | 193 | 3 | 57 | 75 | 4 | — | 21 | 22 | 14 | 12 | 32 | 22 | 86 | 242 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2500 | 226 | 209 | 24 | 25 | 29 | 24 | 1580 | 24 | 642 | 2500 | 49 | 634 | 445 | 117 | 221 | 219 | 24 | 24 | 24 | 0 |
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.










