Surf Forecasts:
Block Island surf forecast from 24 Jul 2026:
- Best quality surf: Thursday 30 Jul, 8AM (local time) - 4ft (1.2m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 11AM (local time) - 4ft (1.2m), 9s period, S swell with 210 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 8AM (local time) - 4ft (1.2m), 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 8AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.2m and 6s. 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 1.2m 9s and forecast to arrive on Thursday (Jul 30) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Jul 26) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 30th Jul) | 4ft (1.2m) 8s |
| Best Surf | 8AM (Thu 30th Jul) | 4ft (1.2m) 8s |
| Most Powerful | 11AM (Thu 30th Jul) | 4ft (1.2m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here, and I’m looking at a pretty grim stretch ahead for Block Island. This is a classic summertime lull, and it’s gonna be a long wait for anything worth paddling out for.
Looking at the whole 16-day window, I gotta be straight with you – there’s nothing on the cards for the first two weeks. From July 24th right through to August 6th, it’s a desert. We’re talking about a solid 14-day gap with no decent surf. The swell is tiny, the wind is all wrong, and every single session gets flagged as poor surf conditions. You’ll see a few scraps of energy around 2ft to 4ft, but with short period (7-8 seconds) and cross-shore or onshore winds, it’s just not gonna happen. The combined energy barely cracks triple digits on a few days, hitting a max of 210 (moderate) on the morning of July 30th, but even then the wind is a cross-off and the rating is a zero. It’s just not worth the drive.
Now, finally, on August 7th, Friday morning, we get a flicker of hope. The swell picks up to 6ft from the SSW, and here’s the kicker – the wind is glassy, calm, zero. That’s a huge positive. The combined energy jumps to 311 (moderate), and the forecast actually says “expect good surf conditions.” That’s the only standout in the whole run. But, and it’s a big but, that swell is only 7 seconds, so it’s short-period windswell, not a groundswell. It’ll be a bit crumbly, but with glassy conditions, Block Island’s point break should have some fun, rideable waves. The water temperature is about average for this time of year, so no crazy surprises there.
Because it’s so far out, treat this August 7th call as promising but not locked in. The afternoon of the 7th gets messy again with a cross-onshore wind, so if you’re going, be on the water first thing. Before that, save your petrol.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu night, min 16°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the NE by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Wed afternoon. Warm (max 22°C on Tue night, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 8 | SSW 7 | SE 8 | SE 7 | ESE 7 | ESE 7 | ESE 7 | SE 8 | SE 8 | ESE 7 | SE 7 | SE 8 | SE 8 | SSE 7 | SE 7 | SE 5 | S 8 | S 7 | S 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 96 | 38 | 32 | 89 | 117 | 129 | 121 | 58 | 48 | 78 | 54 | 48 | 48 | 37 | 62 | 49 | 74 | 112 | 83 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | on | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off | glassy | cross-on | cross-on | on | on | on | on | cross-on | off |
High Tide | 4:50AM0.62m | 5:29PM0.84m | 5:46AM0.63m | 6:20PM0.87m | 6:36AM0.66m | 7:04PM0.89m | 7:22AM0.70m | 7:44PM0.91m | 8:03AM0.75m | 8:20PM0.92m | 8:42AM0.79m | 8:52PM0.93m | |||||||
Low Tide | 11:12PM0.22m | 10:41AM0.20m | 00:03AM0.20m | 11:33AM0.19m | 00:49AM0.18m | 12:20PM0.17m | 1:30AM0.14m | 1:04PM0.14m | 2:08AM0.11m | 1:45PM0.12m | 2:43AM0.07m | 2:24PM0.11m | 3:15AM0.05m | ||||||
 | | |  | | | | | | | |  | | | |  |  |  | | |
 | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | 8:12 | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | 16 | — |
Temp °C | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 22 | 21 | 17 | 20 | 21 | 21 | 21 | 22 | 22 | 22 | 22 |
Feels °C | 20 | 20 | 19 | 17 | 17 | 17 | 16 | 16 | 19 | 17 | 17 | 20 | 20 | 21 | 20 | 21 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SE 6 | SSW 7 | SE 7 | ESE 7 | S 7 | ESE 7 | SE 8 | SE 8 | ESE 7 | SE 7 | SE 8 | SE 8 | SSE 7 | E 7 | SE 8 | S 8 | S 7 | S 7 |
| kJ | 96 | 34 | 26 | 89 | 117 | 1 | 121 | 58 | 48 | 78 | 54 | 48 | 48 | 37 | 25 | 11 | 74 | 112 | 83 |
Swell 2 Height (m) Direction Period (s) | SE 7 | SSW 7 | SE 8 | SSW 6 | SSW 6 | SW 6 | S 6 | — | SSW 7 | SSW 6 | S 5 | E 7 | E 7 | E 7 | SW 4 | SSE 7 | E 7 | E 8 | SSE 9 |
| kJ | 49 | 38 | 32 | 8 | 3 | 1 | 2 | — | 9 | 3 | 1 | 14 | 38 | 26 | 3 | 9 | 8 | 1 | 32 |
Swell 3 Height (m) Direction Period (s) | — | SSE 9 | — | — | — | — | — | S 8 | — | SSW 6 | S 5 | — | — | SW 4 | — | SSE 7 | E 8 | — | E 6 |
| kJ | — | 8 | — | — | — | — | — | 1 | — | 3 | 1 | — | — | 3 | — | 4 | 1 | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | SE 6 | — | — | ESE 7 | — | ENE 5 | ENE 6 | — | — | — | S 3 | SSE 3 | SE 7 | SE 5 | E 4 | E 4 | ENE 4 |
| kJ | — | — | 23 | — | — | 129 | — | 44 | 34 | — | — | — | 1 | 1 | 62 | 49 | 13 | 9 | 12 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 24 | 24 | 3329 | 24 | 24 | 846 | 24 | 24 | 749 | 24 | 648 | 648 | 24 | 131 | 1557 | 436 | 178 | 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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