
Surf Forecasts:
Block Island surf forecast from 21 Jul 2026:
- Best quality surf: Thursday 23 Jul, 2AM (local time) - 7.5ft (2.3m), 9s period, S swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 10ft (3.0m), 9s period, SSW swell with 1,497 kJ wave energy.
- Next surfable swell (1★+): Thursday 23 Jul, 2AM (local time) - 7.5ft (2.3m), 9s 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 Thursday (Jul 23) at 2AM. The primary swell is predicted to be 2.3m 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 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 0.5m 3s period and expected on Thursday (Jul 23) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 23rd Jul) | 7.5ft (2.3m) 9s |
| Best Surf | 2AM (Thu 23rd Jul) | 7.5ft (2.3m) 9s |
| Most Powerful | 11PM (Wed 22nd Jul) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Block Island. Look, I’ll be straight with you – the next couple of weeks are a bit of a tough watch. The forecast is a real mixed bag of lumpy, wind-affected swell and long flat spells. This isn’t going to be a classic run of waves, but there are a couple of moments that could just about work if you’re desperate.
The first real chance of anything surfable doesn't come until Thursday the 22nd of July, but even then, it’s a mess. We’ve got a solid 10ft swell from the SSW pushing through the morning, but the wind is a fresh cross-onshore, making it lumpy and pretty poor. The energy is strong (1169), but the conditions just aren’t there for a good paddle. By the afternoon, the wind drops a touch, but it’s still cross-on and choppy, with the swell down to 8ft. Honestly, this is a day for the kite crew, not the surfer.
Things go quiet for a while after that. We’ve got a long stretch of small, weak, and wind-affected slop from the 23rd of July right through to the end of the month. The swell is tiny, the energy is pathetic – often under 100 – and the wind is mostly onshore or cross-shore. It’s a real grind. Block Island is a point break that rarely breaks, so this is pretty normal for the area when the conditions aren't perfect. Just small, bumpy stuff that’s not worth suiting up for.
Now, there is one tiny glimmer. On the morning of Saturday the 1st of August, we get a bit of a window. The swell is a modest 4ft from the S, with an 8-second period. The energy is moderate (242). But the real story is the wind: it’s a complete glass-off. The wind is calm, and the forecast says "glassy" conditions. For a spot that’s often plagued by wind, this is a major positive. The comment says "expect good surf conditions," which is the best we’ve seen all outlook. If you are a beginner, a 4ft long-period swell like this (8 seconds isn't super long, but it's alright) can be fun, but anything over 5ft is getting big for you, so this is just below that. It’s a stand-out simply because it’s the only clean session in a sea of junk. Expect crowds, as it’s a popular spot that’s often packed.
The clean spell doesn't last. By Saturday afternoon, the wind swings back onshore, and the chop returns. The rest of the second week from the 2nd of August onwards is a total write-off. Swell drops to under 3ft, the energy is pitiful (well under 100), and the wind is back onshore. It’s a flat, blank run to finish the forecast.
So, the best bet is a very early session on the morning of the 1st of August if you can get a pass for the crowds. Everything else is a miss. Keep your hopes up for the long-range; for Block Island, this kind of dry spell happens.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Tue night. Warm (max 26°C on Wed night, min 17°C on Wed night). Winds increasing (light winds from the SSW on Mon night, strong winds from the SSW by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 17°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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 | S 7 | S 6 | SSW 8 | SSW 8 | SSW 8 | S 9 | S 8 | SSW 8 | S 8 | SSW 8 | SE 7 | SE 8 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 |
Wave Graph | |||||||||||||||||||
54 | 97 | 139 | 906 | 1169 | 758 | 854 | 401 | 197 | 195 | 96 | 64 | 67 | 51 | 99 | 89 | 75 | 71 | 67 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-on | off | cross-off | on | glassy | cross-on | cross-on | cross | cross | cross-on | cross-off | cross | on | cross |
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 | 15 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 23 | 23 | 24 | 26 | 19 | 20 | 20 | 20 | 20 | 19 | 19 | 20 | 20 | 20 | 21 | 21 |
Feels °C | 20 | 19 | 19 | 21 | 22 | 23 | 25 | 16 | 17 | 20 | 18 | 18 | 16 | 16 | 17 | 18 | 17 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 12 | SE 12 | — | — | — | S 9 | S 8 | SSW 8 | S 8 | SSW 8 | SE 7 | SE 8 | SE 7 | SSW 6 | SE 7 | SE 8 | SE 8 | SE 8 |
54 | 6 | 5 | — | — | — | 854 | 401 | 197 | 195 | 96 | 64 | 67 | 51 | 7 | 89 | 75 | 71 | 67 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 12 | — | — | — | — | — | — | SE 7 | SE 7 | SE 7 | SSW 7 | SSW 7 | SSW 6 | — | SSW 6 | SSW 5 | SW 5 | — |
3 | 6 | — | — | — | — | — | — | 64 | 65 | 47 | 55 | 17 | 8 | — | 11 | 10 | 1 | — | |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 3 | S 7 | S 6 | SSW 8 | SSW 8 | SSW 8 | NNW 3 | NNW 3 | — | — | — | — | — | ESE 3 | SE 7 | — | — | — | — |
3 | 97 | 139 | 906 | 1169 | 758 | 3 | 3 | — | — | — | — | — | 3 | 99 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 767 | 1148 | 1148 | 1148 | 24 | 24 | 0 | 24 | 24 | 0 | 24 | 767 | 24 | 691 | 665 | 24 | 24 | 605 | 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.










