Surf Forecasts:
Block Island surf forecast from 30 Jul 2026:
- Best quality surf: Thursday 30 Jul, 8PM (local time) - 3.5ft (1.1m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 11AM (local time) - 3.5ft (1.1m), 9s period, S swell with 190 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 8PM (local time) - 3.5ft (1.1m), 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 Thursday (Jul 30) at 8PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.5m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 1.1m 9s and forecast to arrive on Saturday (Aug 01) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Thursday (Jul 30) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 30th Jul) | 3.5ft (1.1m) 8s |
| Best Surf | 8PM (Thu 30th Jul) | 3.5ft (1.1m) 8s |
| Most Powerful | 11AM (Sat 1st Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: this forecast for Block Island is a tough one. We’ve got a 16-day window, and honestly, from now through the whole stretch, there’s no good surf on offer. The swell is small, the wind is almost always from the wrong direction, and the conditions are consistently poor.
The first real chance of anything surfable shows up on Thursday afternoon, July 30th, but it’s a letdown. We’ve got a 4ft swell from the south with a short period of 8 seconds, and the wind is a cross-offshore from the north-northeast at 12 mph. The water is sitting at 69°, which is a bit colder than usual for this time of year. The wave energy is moderate (195), but it’s not enough to overcome the “poor surf conditions” label. Don’t get your hopes up.
The only glimmer in this whole period is Friday morning, July 31st. The wind goes glassy, southwest at 3 mph, and the swell drops to 3ft from the south, period 9 seconds. The energy is still moderate (165), and while the waves are surfable, they’re described as very ordinary. It’s the best you’ll get, but it’s nothing to write home about. If you’re desperate for a paddle, that’s your window.
After that, it’s a long, sorry run of small, weak, and messy surf. From Friday afternoon all the way through to August 14th, the swell stays under 5ft, often dropping below 2ft, with periods mostly under 8 seconds. The wind is almost always cross-onshore, chopping everything up. The wave energy drops from moderate into the weak range, hitting values as low as 21.
There is a brief moment on Sunday morning, August 9th, where the wind goes glassy again from the west, but the swell is only 3ft with a pathetic 5-second period and energy of just 54. It’s not worth suiting up for.
The swell direction is mostly from the south or south-southwest, and Block Island is a point break that’s rarely breaking and exposed to the south. The optimum swell direction is southeast, so we’re not even getting the ideal angle.
Forget it. This is a blank run. The area just doesn’t have the goods right now. Stick to the sandbar or the beach. If you’re a kite surfer, that Wednesday afternoon, August 5th, with a 19 mph cross-onshore wind might be more interesting than a paddle, but for surfing, it’s a no-go.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 24°C on Sat morning, min 19°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sun night. Warm (max 26°C on Tue afternoon, min 23°C on Sun afternoon). Winds decreasing (fresh winds from the S on Mon night, light winds from the S by Tue night). | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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 | S 9 | S 8 | S 8 | S 9 | S 8 | S 8 | SSW 7 | SSW 7 | S 7 | SSE 7 | S 7 | S 7 | S 8 | S 7 | S 7 | SSE 7 | SE 7 | SE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 195 | 137 | 158 | 136 | 108 | 190 | 165 | 41 | 82 | 82 | 22 | 42 | 158 | 92 | 111 | 76 | 61 | 18 | 13 | 23 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-on | cross | cross-on | 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 |
High Tide | 9:22PM0.93m | 9:50AM0.84m | 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 | |||||||
Low Tide | 3:01PM0.11m | 3:42AM0.04m | 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 | |||||||
 |  |  | | | | |  |  | |  | | | | | | | | | | |
 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — |
 | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — |
mm | 4 | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | 2 | 1 | — |
Temp °C | 20 | 21 | 20 | 21 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 25 | 24 | 24 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 19 | 22 | 21 | 20 | 24 | 24 | 23 | 21 | 23 | 23 | 24 | 25 | 25 | 24 | 25 | 27 | 27 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 9 | S 8 | S 8 | S 9 | SE 8 | S 8 | SE 7 | SE 7 | S 7 | SSE 7 | — | S 7 | S 8 | S 7 | S 7 | SSW 6 | SSW 6 | SE 8 |
| kJ | 195 | 137 | 158 | 136 | 108 | 190 | 18 | 41 | 18 | 7 | 22 | 42 | — | 92 | 111 | 76 | 61 | 16 | 13 | 23 |
Swell 2 Height (m) Direction Period (s) | — | ENE 6 | ENE 6 | E 6 | SE 9 | ESE 9 | E 5 | SE 7 | SE 9 | S 9 | SE 7 | SE 8 | — | ESE 8 | ESE 8 | SE 8 | ESE 8 | SSE 7 | SE 7 | SSW 6 |
| kJ | — | 13 | 7 | 3 | 13 | 8 | 1 | 12 | 3 | 6 | 7 | 3 | — | 7 | 7 | 3 | 6 | 18 | 11 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | ESE 9 | E 6 | E 6 | — | ESE 9 | — | SE 9 | ESE 9 | S 7 | — | — | E 9 | — | — | E 10 | SE 8 | E 10 |
| kJ | — | — | — | 9 | 3 | 1 | — | 7 | — | 3 | 8 | 1 | — | — | 2 | — | — | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | NE 4 | — | — | — | SW 4 | — | S 8 | SSW 4 | SSW 7 | SSW 7 | SSW 4 | SW 4 | S 7 | — | — | — | — | — | — | S 3 |
| kJ | 19 | — | — | — | 12 | — | 165 | 20 | 82 | 82 | 14 | 8 | 158 | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 0 | 0 | 24 | 24 | 24 | 767 | 204 | 1148 | 1541 | 204 | 1533 | 1493 | 24 | 24 | 1084 | 767 | 642 | 3325 | 691 |
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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