Surf Forecasts:
Block Island surf forecast from 18 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 11PM (local time) - 8ft (2.4m), 10s period, S swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11AM (local time) - 11ft (3.5m), 10s period, SSW swell with 2,187 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 8PM (local time) - 4.5ft (1.3m), 8s period with SSW 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 Sunday (Jul 19) at 8PM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 12s. 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 3.5m 10s and forecast to arrive on Wednesday (Jul 22) 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 0.8m 4s period and expected on Thursday (Jul 23) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 19th Jul) | 4.5ft (1.3m) 8s |
| Best Surf | 11PM (Wed 22nd Jul) | 8ft (2.4m) 10s |
| Most Powerful | 11AM (Wed 22nd Jul) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer for Block Island over the next couple of weeks. I’ll be straight with you – we’ve got a long wait ahead.
The first few days are a write-off. Saturday the 18th and Sunday the 19th might look like there’s movement, but the winds are messy and the swell is weak and choppy. Not worth paddling out for. The real action doesn’t start to build until mid-week.
Wednesday the 22nd is where things get interesting, but it’s not for the faint-hearted. A big pulse of swell pushes through, with waves hitting 10 ft from the SSW. The combined wave energy is strong (1150), which means there’s plenty of power. However, the morning wind is a fresh cross-shore, making it lumpy and hard to ride. This is expert-only territory. If you’re a beginner, stay on the sand. The afternoon gets even messier with a choppy cross-onshore. Not the cleanest, but the size is undeniable.
Now, Thursday the 23rd is our standout window. The morning session at Block Island (point break) is where you want to be. The swell drops a bit to a solid 7 ft from the S, still packing moderate energy (751), but the wind swings to a clean offshore from the W at 12 mph. That’s going to groom the waves into something special. The period is a solid 9 seconds, giving them shape and push. This is a classic point break setup, and with the right wind, it’ll be the pick of the run. Keep in mind, this spot rarely breaks, so when it does, it’s a treat. Crowds are likely though, so get there early.
After that, the rest of the week and into the first of August fades out. The swell drops off, winds become onshore or cross-shore, and we’re back to small, ordinary conditions. There’s a glimpse of something on Sunday the 2nd of August with a 8 ft S swell (510 energy) and a clean offshore from the NE in the morning, but the period is short at 7 seconds, making it a bit fat and less exciting. It’s worth checking if you’re desperate, but don’t get your hopes up.
Water temps are sitting around 68°F, which is a bit colder than normal for this time of year, so you might want a spring suit.
Overall, the best bet is Thursday morning the 23rd. It’s not a long window, but if you’re on it, you’ll score.
Rusty
Short Range ForecastHeavy rain (total 22mm), heaviest during Sat night. Warm (max 26°C on Sun afternoon, min 20°C on Sun night). Winds decreasing (strong winds from the WSW on Sat night, calm by Mon morning). | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Tue night. Warm (max 25°C on Wed night, min 18°C on Thu morning). Winds decreasing (near gales from the SSW on Tue night, light winds from the ESE by Thu afternoon). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SSW 4 | SSW 5 | SW 6 | SSW 8 | SSW 7 | SSW 8 | S 8 | S 8 | SSW 8 | SSW 8 | S 5 | SSE 6 | SSW 10 | S 9 | S 10 | S 9 | SSW 9 | S 8 | S 8 | SSW 8 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 40 | 224 | 270 | 208 | 120 | 127 | 121 | 75 | 45 | 71 | 135 | 2187 | 1189 | 963 | 649 | 311 | 280 | 165 | 90 | 84 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | on | on | cross-on | cross | cross-on | off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off |
High Tide | 11:49AM0.98m | 00:00AM0.88m | 12:42PM0.95m | 00:50AM0.79m | 1:37PM0.91m | 1:44AM0.71m | 2:35PM0.87m | 2:44AM0.66m | 3:35PM0.84m | 3:48AM0.62m | 4:34PM0.84m | 4:50AM0.62m | 5:29PM0.84m | ||||||||
Low Tide | 6:08PM0.07m | 6:28AM0.03m | 7:10PM0.13m | 7:13AM0.09m | 8:13PM0.18m | 8:00AM0.14m | 9:16PM0.21m | 8:51AM0.18m | 10:16PM0.22m | 9:47AM0.20m | 11:12PM0.22m | 10:41AM0.20m | 00:03AM0.20m | ||||||||
 |  |  | | |  | |  |  |  | |  |  | | | | | | | | | |
 | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — |
 | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — | — | 8:12 | — | — | 8:10 | — |
mm | — | 3 | 19 | — | — | — | — | — | — | — | — | 16 | 1 | — | 1 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 22 | 26 | 26 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 25 | 20 | 21 | 20 | 21 | 22 | 22 |
Feels °C | 21 | 20 | 21 | 20 | 23 | 23 | 20 | 19 | 21 | 21 | 21 | 21 | 19 | 21 | 24 | 18 | 20 | 18 | 18 | 19 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 13 | SSW 8 | SSW 7 | SSW 8 | S 8 | S 8 | SSW 8 | SSW 8 | SE 8 | SE 11 | — | S 9 | S 10 | S 9 | SSW 9 | S 8 | S 8 | SSW 8 | SE 8 |
| kJ | 3 | 3 | 7 | 270 | 208 | 120 | 127 | 121 | 75 | 45 | 3 | 5 | — | 1189 | 963 | 649 | 311 | 280 | 165 | 83 | 84 |
Swell 2 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 8 | SE 13 | SE 13 | SE 12 | NNE 3 | SE 12 | SE 8 | SE 12 | SE 11 | — | — | — | — | SE 8 | SE 8 | SE 7 | SE 7 | SE 8 | S 8 |
| kJ | 7 | 7 | 3 | 7 | 6 | 6 | 1 | 6 | 3 | 6 | 5 | — | — | — | — | 82 | 84 | 71 | 48 | 90 | 82 |
Swell 3 Height (m) Direction Period (s) | — | — | E 8 | — | — | — | SE 12 | SE 12 | SE 12 | — | — | — | — | — | — | — | — | — | — | — | ENE 4 |
| kJ | — | — | 1 | — | — | — | 6 | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 5 | SW 6 | NW 3 | NW 3 | NW 3 | NNE 3 | — | S 4 | SSE 4 | S 5 | SSE 6 | SSW 10 | — | — | NE 4 | ENE 4 | ENE 4 | NE 4 | ENE 4 | — |
| kJ | 11 | 40 | 224 | 6 | 3 | 3 | 4 | — | 6 | 17 | 71 | 135 | 2187 | — | — | 6 | 13 | 7 | 4 | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1084 | 347 | 336 | 24 | 24 | 24 | 24 | 24 | 24 | 1493 | 1148 | 596 | 217 | 24 | 0 | 24 | 26 | 24 | 0 | 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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