Surf Forecasts:
Block Island surf forecast from 14 Jul 2026:
- Best quality surf: Monday 20 Jul, 5AM (local time) - 3.5ft (1.0m), 7s 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★+): Monday 20 Jul, 5AM (local time) - 3.5ft (1.0m), 7s 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 Monday (Jul 20) at 5AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.1m and 12s. Another secondary swell of 1.2m and 5s is also forecast. 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 1.7m 6s period and expected on Monday (Jul 20) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 20th Jul) | 3.5ft (1.0m) 7s |
| Best Surf | 5AM (Mon 20th Jul) | 3.5ft (1.0m) 7s |
| 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.
It's a quiet stretch ahead for Block Island. We've got a long run of days where the surf just isn't cooperating. The real issue is the wind and the overall energy. For the first week and a half, it's mostly junk. Then, around the 25th, things start to look interesting, and the 26th is the one to circle on the calendar.
We have nothing worthwhile from now until about the 25th of July. That's over a week of small, choppy, or just flat conditions. A few mornings, like the 15th and 17th, might look clean from the offshore wind, but the swell is tiny – 4ft or less – and the period is short. There's just no push. A couple of afternoons around the 15th show a bit of size, but the weather gets ugly with risk of thunderstorms.
The water temperature is 67°, which is a bit colder than normal for this time of year. If you're paddling out, you'll want a thicker suit.
The one standout in the entire window lands on Sunday the 26th. This is our best bet. The morning looks glassy, and we'll have a solid 6ft SSW groundswell. With an 8-second period, it's a little short of being a classic groundswell, but the energy is decent (349). The wind is glassy from the ENE, so it will be clean. The direction is a solid match for Block Island. Keep in mind this spot rarely breaks, and crowds are often an issue here, but for this morning, it's going to be worth the look. The afternoon turns onshore and drops off.
Outside of that one morning, there is nothing else to get excited about. It's a classic case of waiting for the next system to line up.
Rusty
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 30°C on Wed afternoon, min 21°C on Mon afternoon). Winds decreasing (strong winds from the SW on Tue afternoon, light winds from the W by Wed night). | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Sat night. Warm (max 28°C on Thu night, min 20°C on Sat morning). Winds increasing (calm on Fri night, strong winds from the SW by Sun morning). | ||||||||||||||||||||
Mon 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 4 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 5 | SSW 5 | SSW 6 | SSW 8 | S 7 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 47 | 84 | 307 | 627 | 195 | 141 | 43 | 49 | 88 | 89 | 37 | 28 | 20 | 10 | 14 | 54 | 170 | 234 | 113 | 103 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross-off | cross-off | off | cross | cross | cross-off | off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross-off | cross | cross-on |
High Tide | 7:50PM1.15m | 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 | |||||||
Low Tide | 2:33AM-0.05m | 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 | ||||||||
 |  |  | | | |  |  | | | | | | | | |  |  | | | | |
 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 |
 | 8:17 | — | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | 8:14 |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 24 | 2 | 2 | — | — |
Temp °C | 21 | 22 | 22 | 23 | 24 | 28 | 30 | 29 | 25 | 26 | 28 | 23 | 27 | 26 | 21 | 22 | 22 | 22 | 23 | 20 | 19 |
Feels °C | 17 | 18 | 17 | 18 | 20 | 27 | 28 | 28 | 23 | 21 | 25 | 18 | 22 | 22 | 18 | 19 | 20 | 21 | 22 | 17 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 6 | SSW 6 | SE 9 | SE 9 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SE 8 | SE 8 | SSW 6 | SSW 8 | S 7 | S 8 |
| kJ | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 43 | 49 | 3 | 3 | 37 | 28 | 20 | 10 | 3 | 3 | 170 | 234 | 113 | 103 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 7 | E 7 | — | S 17 | S 17 | ESE 9 | SE 9 | S 15 | SE 15 | SE 9 | SE 8 | SE 8 | SE 8 | SE 13 | SE 13 | SE 13 | NE 4 | SE 12 | SE 12 |
| kJ | 1 | 1 | 1 | 1 | — | 6 | 5 | 7 | 3 | 4 | 9 | 3 | 3 | 3 | 3 | 7 | 7 | 7 | 9 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | E 8 | — | — | — | — | — | — | S 17 | S 15 | — | E 11 | SE 14 | — | SE 14 | SE 14 | E 8 | E 8 | SE 13 | SE 12 | SE 12 | — |
| kJ | 1 | — | — | — | — | — | — | 5 | 4 | — | 2 | 8 | — | 8 | 7 | 1 | 1 | 7 | 6 | 6 | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | NW 2 | NNW 2 | SW 6 | SW 6 | NW 3 | W 4 | NW 3 | — | SW 5 | SSW 5 | NE 4 | — | ENE 4 | ENE 5 |
| kJ | 13 | 47 | 84 | 307 | 627 | 195 | 141 | 1 | 1 | 88 | 89 | 5 | 13 | 7 | — | 14 | 54 | 13 | — | 31 | 128 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1696 | 445 | 482 | 988 | 249 | 24 | 24 | 24 | 1084 | 26 | 25 | 49 | 645 | 642 | 1223 | 1802 | 642 | 219 | 24 | 24 | 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.
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