
Surf Forecasts:
Block Island surf forecast from 3 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 2AM (local time) - 6.5ft (2.0m), 8s period, S swell with offshore winds.
- Most powerful swell: Monday 3 Aug, 8PM (local time) - 10ft (3.0m), 9s period, S swell with 1,228 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 2AM (local time) - 6.5ft (2.0m), 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 (Aug 04) at 2AM. The primary swell is predicted to be 2.0m 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 3.0m 9s and forecast to arrive on Monday (Aug 03) at 8PM. 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 Tuesday (Aug 04) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 4th Aug) | 6.5ft (2.0m) 8s |
| Best Surf | 2AM (Tue 4th Aug) | 6.5ft (2.0m) 8s |
| Most Powerful | 8PM (Mon 3rd Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, let's be real with you. The next two weeks are looking like a total bust for waves around here. There’s a long stretch of small, crumbly surf, and for the most part, you’re not going to want to bother.
The only real window with any size kicks off on the 4th. We’ve got a pulse of SSW swell that comes through, but it’s got problems. The first call, Tuesday morning, is the standout. It’s glassy, the wind is nothing, and we’re looking at chest-high waves around 4ft. That’s your cleanest look, but the swell is short-period, so it’s not going to have much push or shape. It’s surfable, but it’s not going to be a classic.
The water is a bit colder than normal for this time of year, sitting at 69°, which is about 3° off the average. You’ll feel that chill on the first session.
From Tuesday afternoon, it just falls apart. The wind swings onshore and the swell drops. We’ve got a few days of choppy, cross-onshore junk from the 5th through the 9th, with heights mostly hovering around the 3ft mark or less and periods down below 8 seconds. It’s not worth your time.
There is a little bump of energy on the 10th with slightly bigger swell, but by Monday afternoon it’s cross-off and clean, but still tiny at 5ft. For this area, that’s not enough to get excited about given the conditions.
After that, it’s a fast fade. From the 11th through the 18th, we’re looking at waist-high or smaller waves, with the swell dropping to under 3ft and most days showing less than 2ft by the end. The periods are short, the winds are all over the place, and the energy readings are weak, often dipping into the double digits or low triple digits. This is a full-blown flat spell coming on.
The only time we see some clean conditions is on the 15th morning with a cross-off breeze, but the swell is only 3ft. That’s a long paddle for nothing.
Bottom line: the 4th morning is the only real highlight, and even that is a marginal call. If you’re a beginner, the 4ft on Tuesday might be a bit much if it holds, but it’s honestly not powerful. For the rest of this run, you’re better off finding something else to do. The first week is a write-off after Tuesday, and the second week is a ghost town. Don’t hold your breath.
This is one of those times where the forecast looks like it’s going to stay poor for a while, but these things can change. Still, based on what’s on the table, there’s nothing worth chasing.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon afternoon. Warm (max 25°C on Wed night, min 20°C on Mon night). Winds decreasing (strong winds from the SSW on Mon afternoon, calm by Tue morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 29°C on Sat afternoon, min 24°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Mon 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 9 | S 8 | SSW 8 | SSW 8 | SSW 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
Wave Graph | ||||||||||||||||||||
1497 | 552 | 192 | 123 | 69 | 311 | 154 | 131 | 92 | 70 | 82 | 68 | 77 | 118 | 75 | 62 | 60 | 53 | 80 | 141 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-on | cross-on | cross-on |
High Tide | 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 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | |
8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | |
mm | 10 | 4 | — | — | 2 | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 24 | 24 | 23 | 24 | 25 | 25 | 26 | 26 | 25 | 27 | 26 | 26 | 29 | 29 | 26 | 26 | 23 |
Feels °C | 19 | 22 | 23 | 21 | 21 | 24 | 24 | 25 | 27 | 27 | 26 | 27 | 26 | 26 | 26 | 27 | 29 | 28 | 25 | 21 |
Swell 1 Height (m) Direction Period (s) | — | S 8 | SSW 8 | SSW 8 | SSW 7 | — | S 7 | S 7 | S 7 | SE 8 | SE 8 | SE 7 | SE 8 | SSW 6 | SSW 6 | SE 8 | SE 7 | SSW 6 | SE 7 | SE 7 |
— | 552 | 192 | 123 | 69 | — | 154 | 131 | 92 | 9 | 9 | 14 | 9 | 118 | 75 | 16 | 8 | 53 | 2 | 2 | |
Swell 2 Height (m) Direction Period (s) | — | — | SE 7 | SE 7 | E 11 | — | E 10 | SE 8 | E 10 | E 9 | E 10 | E 9 | E 9 | SE 8 | SSE 8 | SE 8 | E 9 | SSE 7 | E 8 | SE 10 |
— | — | 39 | 50 | 2 | — | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 17 | 26 | 15 | 2 | 5 | 1 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 10 | — | — | — | — | — | E 9 | E 8 | E 9 | — | E 8 | — | E 8 |
— | — | — | — | — | — | — | 2 | — | — | — | — | — | 2 | 1 | 2 | — | 1 | — | 1 | |
Wind waves Height (m) Direction Period (s) | S 9 | — | — | — | SE 7 | S 7 | — | — | — | S 7 | SSW 6 | SSW 6 | SSW 6 | — | — | SSW 6 | SSW 6 | — | SSW 6 | SSW 6 |
1497 | — | — | — | 46 | 311 | — | — | — | 70 | 82 | 68 | 77 | — | — | 62 | 60 | — | 80 | 141 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 201 | 0 | 0 | 24 | 24 | 24 | 24 | 24 | 24 | 1156 | 25 | 34 | 219 | 25 | 34 | 219 | 24 | 24 | 2565 | 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.











