Surf Forecasts:
Block Island surf forecast from 25 Jul 2026:
- Best quality surf: Thursday 30 Jul, 11PM (local time) - 4.5ft (1.4m), 10s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 8PM (local time) - 5ft (1.5m), 10s period, SSE swell with 424 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 11PM (local time) - 4.5ft (1.4m), 10s period with SSE 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 11PM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.5m 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 1.5m 10s and forecast to arrive on Thursday (Jul 30) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Thursday (Jul 30) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 30th Jul) | 4.5ft (1.4m) 10s |
| Best Surf | 11PM (Thu 30th Jul) | 4.5ft (1.4m) 10s |
| Most Powerful | 8PM (Thu 30th Jul) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright, Rusty here, checking in on the local scene. Let’s get into it.
Well, I gotta be straight with you – this stretch of the forecast is a long, flat, and frustrating one. For the entire first week, from Saturday the 25th of July right through to the end of the month, there’s just nothing doing. The surf is small, weak, and the wind is all wrong. We’re looking at undersized, gutless waves with a combined energy that barely gets into the double digits or low triple digits, but the quality is just shot. The wind is cross, cross-on, or onshore, making it a choppy, bumpy mess. Don’t even bother. This is a dead period.
The water temp at the start of this run is sitting at 68°, which is a bit colder than usual for this time of year, so you’ll want a spring suit or maybe a 3/2 if you’re chilly.
We do have a glimmer of hope, but it’s a long way off. The best bet in the whole 16-day window is hitting Block Island on Monday morning, the 3rd of August. This is a point break that rarely breaks, so when it does, you pay attention. The wind is a clean, light offshore from the NNE, swinging to a cross-off at 3 mph – that’s the kind of glassy, clean surface we’ve been waiting for. The swell is a solid 5 ft from the SSE, with a period of 9 seconds, giving it some decent punch. The combined energy is a strong 337. This is the standout. It’s a bit of a wait, and a long-range call, so don’t bank on it, but it’s the only real chance at a decent session. The downside is that it’s a rarely-breaking spot, so you’ll need to be on it, and when it’s on, crowds are often a problem.
After that morning window, the afternoon on the 3rd and the rest of the week look messy again. The wind swings onshore or cross-shore, and the swell drops off or gets choppy. By the 7th and 8th of August, we’re back to tiny, clean but weak conditions with nothing to surf. So, for the die-hards, mark your calendar for the morning of the 3rd, but don’t hold your breath for the rest of it.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Mon night, min 17°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 52mm), heaviest during Wed afternoon. Warm (max 21°C on Tue morning, min 17°C on Thu morning). Winds decreasing (fresh winds from the NNE on Wed night, light winds from the NW by Thu night). | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
AM | 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) | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | SE 7 | ESE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SSE 5 | SSE 7 | S 7 | S 8 | NE 6 | SSE 10 | S 9 | S 9 | S 9 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 83 | 96 | 105 | 110 | 91 | 79 | 68 | 34 | 39 | 69 | 48 | 103 | 361 | 269 | 206 | 177 | 331 | 300 | 230 | 148 | 132 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | on | cross-off | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 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 | 9:17AM0.82m | 9:22PM0.93m | 9:50AM0.84m | 9:54PM0.92m | ||||||||
Low Tide | 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 | 3:01PM0.11m | 3:42AM0.04m | 3:37PM0.11m | 4:06AM0.04m | |||||||
 | |  | | | | | | | |  |  |  |  |  | | |  |  | | | |
 | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — |
 | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 24 | 25 | — | — | — | 2 | — | — |
Temp °C | 19 | 20 | 20 | 19 | 20 | 20 | 18 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 18 | 20 | 20 | 21 | 22 | 22 |
Feels °C | 17 | 18 | 17 | 17 | 18 | 19 | 16 | 18 | 20 | 21 | 20 | 20 | 21 | 18 | 18 | 13 | 17 | 19 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | SW 6 | ESE 7 | ESE 8 | ESE 8 | SE 7 | ESE 7 | SE 7 | SE 8 | SE 8 | SE 8 | E 8 | E 8 | S 7 | S 8 | S 8 | SSE 10 | S 9 | S 9 | S 9 | S 8 |
| kJ | 83 | 1 | 105 | 110 | 91 | 79 | 68 | 34 | 39 | 69 | 48 | 12 | 1 | 269 | 206 | 137 | 331 | 300 | 230 | 148 | 132 |
Swell 2 Height (m) Direction Period (s) | SSW 6 | — | S 5 | S 5 | S 6 | — | S 6 | E 6 | E 6 | E 6 | S 7 | — | — | — | — | SSW 8 | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 6 |
| kJ | 3 | — | 1 | 1 | 3 | — | 3 | 6 | 6 | 6 | 4 | — | — | — | — | 6 | 67 | 20 | 7 | 7 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 6 | S 6 | S 7 | E 6 | — | — | — | — | SSW 8 | — | — | SE 10 | SE 9 | SE 9 |
| kJ | — | — | — | — | — | — | — | 3 | 3 | 4 | 3 | — | — | — | — | 6 | — | — | 4 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | ESE 7 | — | — | — | — | — | — | — | SSE 3 | SSE 4 | SSE 5 | SSE 7 | E 6 | NE 6 | NE 6 | NNW 4 | — | — | — | — |
| kJ | — | 96 | — | — | — | — | — | — | — | 2 | 25 | 103 | 361 | 149 | 268 | 177 | 6 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 377 | 24 | 25 | 1696 | 25 | 775 | 1804 | 138 | 482 | 409 | 26 | 24 | 25 | 29 | 29 | 24 | 0 | 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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