Surf Forecasts:
Block Island surf forecast from 1 Aug 2026:
- Most powerful swell: Monday 3 Aug, 8PM (local time) - 7ft (2.2m), 8s period, S swell with 624 kJ wave energy.
Best Forecast Surf Conditions for Block Island this week:
The most powerful waves expected at Block Island in the next 16 days are 2.2m 8s and forecast to arrive on Monday (Aug 03) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Saturday (Aug 01) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 3rd Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get into it.
Honestly, mate, this is a tough stretch for Block Island. The whole 16-day window is a bit of a dud – every single time slot is flagged with poor surf conditions, so I’m not going to pretend there’s a hidden gem. The first real surf recommendation doesn’t show up until the period starts, and it’s all downhill from there.
We’ve got a bit of a bump in the middle. On Monday, August 3rd, the swell bumps up to 6 ft in the morning and 7 ft in the afternoon, both from the S, with a period of 7-8 seconds. The combined energy shoots up to 567 (moderate wave energy) on Monday afternoon, but the wind is a cross-onshore from the SSW at 16 mph, making it choppy. That’s the biggest swell of the window, but it’s messy. On Tuesday, August 4th, we see 7 ft from the SSW in the morning (energy of 429), but again, cross-onshore winds and a short period of 7 seconds kill the quality. These waves are over 5 ft, so beginners would struggle, and with the bumpy conditions, even intermediate surfers won’t have a great time.
The rest of the week is smaller, weaker, and still plagued by onshore or cross-onshore winds. The surf is mostly between 2 ft and 5 ft, with periods around 6-7 seconds, and energy values dropping below 100 most days. The water temp is about 69°F, which is a bit colder than normal for this time of year (a -3° anomaly), so you’ll feel that chill.
There’s a tiny glimmer of hope on Wednesday, August 12th and Thursday, August 13th mornings, where we get clean conditions with a light breeze and cross-offshore winds, but the swell is tiny – 3 ft and 2 ft respectively. The period is still short (6-7 seconds), so the energy is weak. We even get a glassy morning on Friday, August 14th, with 2 ft from the SSW, but it’s barely a ripple.
Block Island is a point break that’s rarely breaking, so this blank run isn’t super surprising. With the wind mostly cross-onshore and the swell short and weak, it’s just not happening. If you’re desperate, the cleanest windows are those mid-month mornings, but don’t expect much. For now, the setup looks more interesting for a kite session than a paddle-out.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon morning. Warm (max 24°C on Fri night, min 22°C on Fri afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Warm (max 25°C on Tue afternoon, min 23°C on Mon afternoon). Wind will be generally light. | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 8 | S 8 | SSW 8 | S 8 | S 8 | S 7 | SSE 7 | S 5 | S 7 | S 8 | S 8 | SSW 7 | S 7 | S 7 | S 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 136 | 108 | 109 | 61 | 60 | 49 | 48 | 36 | 286 | 567 | 496 | 426 | 251 | 176 | 152 | 134 | 169 | 132 | 110 | 103 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 9:54PM0.92m | 10:22AM0.87m | 10:28PM0.90m | 10:55AM0.89m | 11:07PM0.87m | 11:33AM0.91m | 11:50PM0.83m | 12:17PM0.93m | 00:39AM0.78m | 1:08PM0.94m | 1:35AM0.74m | 2:09PM0.95m | 2:40AM0.71m | |||||||
Low Tide | 3:37PM0.11m | 4:06AM0.04m | 4:15PM0.11m | 4:32AM0.04m | 4:56PM0.12m | 5:02AM0.05m | 5:42PM0.13m | 5:39AM0.06m | 6:38PM0.14m | 6:24AM0.07m | 7:51PM0.16m | 7:16AM0.08m | 9:20PM0.16m | |||||||
 |  |  | | |  | |  |  |  | |  | | | | |  | | | | |
 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — |
 | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — |
mm | — | — | — | — | — | — | — | 4 | 7 | 1 | 5 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 23 | 24 | 23 | 24 | 23 | 23 | 23 | 24 | 23 | 24 | 24 | 24 | 25 | 24 | 24 | 25 | 25 | 24 | 25 | 25 |
Feels °C | 22 | 23 | 23 | 23 | 21 | 24 | 23 | 25 | 25 | 24 | 25 | 26 | 27 | 24 | 24 | 25 | 26 | 24 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | SSW 8 | S 8 | S 8 | SE 7 | S 7 | SE 6 | E 8 | — | — | SE 8 | — | E 12 | E 10 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | 136 | 108 | 109 | 61 | 60 | 17 | 23 | 10 | 1 | — | — | 3 | — | 3 | 2 | 3 | 10 | 10 | 9 | 9 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 9 | SE 9 | SE 8 | SE 7 | S 9 | SE 9 | ESE 9 | — | — | — | — | — | — | — | E 10 | E 10 | E 10 | E 10 | E 9 |
| kJ | 9 | 13 | 19 | 21 | 17 | 6 | 3 | 8 | — | — | — | — | — | — | — | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | SE 9 | SE 9 | E 5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 1 | 1 | 1 | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 4 | WSW 4 | SSW 4 | SSW 4 | S 7 | SSE 7 | S 5 | S 7 | S 8 | S 8 | SSW 7 | S 7 | S 7 | S 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
| kJ | — | 14 | 6 | 14 | 13 | 49 | 48 | 36 | 286 | 567 | 496 | 426 | 251 | 176 | 152 | 134 | 169 | 132 | 110 | 103 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 24 | 26 | 670 | 249 | 767 | 1541 | 221 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 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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