Surf Forecasts:
Block Island surf forecast from 21 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 11PM (local time) - 10ft (3.0m), 9s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 10ft (3.0m), 9s period, SSW swell with 1,202 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 11PM (local time) - 10ft (3.0m), 9s 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 Wednesday (Jul 22) at 11PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 2.4m and 9s. 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 3.0m 9s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Saturday (Jul 25) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 22nd Jul) | 10ft (3.0m) 9s |
| Best Surf | 11PM (Wed 22nd Jul) | 10ft (3.0m) 9s |
| Most Powerful | 11PM (Wed 22nd Jul) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Block Island (United States). This is a tricky one because this spot is a point break that rarely breaks, so we need the stars to align. We’ve got a long, 16-day window, but honestly, it’s a tough slog with very little on offer.
The outlook starts on Tuesday, 21st July. The water is a bit colder than normal at 67°, which is about 4° cooler than usual for this time of year. Straight away, we’re looking at a week of poor conditions. The first few days are a write-off with onshore winds and building but messy swell. Tuesday sees weak 4ft swell from the S with a short period of 7 seconds and combined energy of only 128. It’s just not happening.
Wednesday, 22nd July, brings a bigger bump of 8ft from the SSW, but the period is still short, 8-9 seconds, and the cross-shore winds are fresh and lumpy. The energy jumps to 727, but it’s a total mess. Thursday morning, 23rd July, is the first real glimmer. We get a clean 6ft swell from the S with a moderate 8-second period, and a cross-offshore NE wind at 12 mph. The combined energy is 392. It’s only a marginal call, but it’s the best we’ve seen. For a spot that rarely breaks, this is a moment to watch.
Then we hit a major gap. From Thursday afternoon through to the end of July, the surf drops right off. We’re looking at tiny, weak swell – under 3ft – with choppy conditions. Even the glassy moments on Friday 24th and Sunday 26th mornings are just too small to do anything with.
The next real chance comes on Saturday, 1st August. This is our standout. The morning shows a clean 6ft swell from the S, with an 8-second period, and a gentle cross-shore breeze from the ENE at 9 mph. The combined energy is 440. The afternoon gets even better for size, hitting 7ft from the S with a 9-second period, though the wind turns light onshore. The score is higher than anything else in the window. For a break that rarely fires, this is the one to circle. It’s still a bit hefty for a beginner at over 5ft, but for an intermediate surfer, this is the best shot at a wave on Block Island.
After that, the run continues poor. Sunday, 2nd August, is blown out, and Monday, 3rd August, morning offers a clean 5ft S swell with a 9-second period and cross-offshore NE wind, but it’s only a marginal call. The rest of the run fades into tiny, weak swell again.
Wind, swell, and timing never really click for a full session. The best bet is Saturday morning, 1st August. Keep your eyes peeled for that one.
Rusty
Short Range ForecastHeavy rain (total 23mm), heaviest during Tue night. Warm (max 25°C on Wed night, min 17°C on Thu morning). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the NE by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Fri afternoon, min 16°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | S 7 | S 6 | SSW 7 | SSW 8 | SSW 9 | S 9 | S 8 | SSW 8 | SSW 8 | SSW 7 | E 6 | E 6 | ESE 6 | ENE 6 | SE 7 | ESE 8 | SE 8 | SE 8 | SW 6 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 116 | 151 | 392 | 725 | 994 | 812 | 405 | 197 | 130 | 71 | 77 | 112 | 73 | 53 | 49 | 76 | 59 | 46 | 92 | 124 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross-on | off | cross-off | cross-on | cross-off | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:35PM0.87m | 2:44AM0.66m | 3:35PM0.84m | 3:48AM0.62m | 4:34PM0.84m | 4:50AM0.62m | 5:29PM0.84m | 5:46AM0.63m | 6:20PM0.87m | 6:36AM0.66m | 7:04PM0.89m | 7:22AM0.70m | 7:44PM0.91m | ||||||||
Low Tide | 9:16PM0.21m | 8:51AM0.18m | 10:16PM0.22m | 9:47AM0.20m | 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 | ||||||||
 |  |  |  |  |  | | |  | | | | | | | | | | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — |
 | — | 8:13 | — | — | 8:12 | — | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — |
mm | — | 8 | 14 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 23 | 22 | 23 | 25 | 20 | 20 | 19 | 20 | 21 | 19 | 19 | 20 | 20 | 19 | 20 | 21 | 22 | 22 | 22 |
Feels °C | 18 | 20 | 21 | 19 | 21 | 24 | 17 | 16 | 17 | 18 | 18 | 16 | 14 | 16 | 16 | 18 | 20 | 21 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 11 | SE 11 | — | — | S 9 | S 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | E 6 | ESE 6 | SE 7 | SE 7 | ESE 8 | SE 8 | SE 8 | SE 7 | ESE 7 | SSW 6 |
| kJ | 6 | 5 | 5 | — | — | 812 | 405 | 197 | 130 | 71 | 41 | 112 | 73 | 42 | 49 | 76 | 59 | 46 | 44 | 36 | 62 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 11 | — | — | — | — | SE 7 | SE 7 | SE 7 | SE 8 | SSE 8 | S 7 | SSW 6 | ENE 5 | S 7 | SSW 6 | — | — | — | SE 8 |
| kJ | — | — | 5 | — | — | — | — | 59 | 57 | 44 | 18 | 39 | 37 | 14 | 19 | 15 | 12 | — | — | — | 28 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNE 3 | — | — | — | SSW 7 | — | — | SSW 6 | NNW 3 | NE 4 | — | — | — | SE 10 |
| kJ | — | — | — | — | — | — | — | 2 | — | — | — | 15 | — | — | 3 | 1 | 5 | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | S 7 | S 6 | SSW 7 | SSW 8 | SSW 9 | NNW 3 | N 3 | — | — | ENE 4 | E 6 | — | NE 5 | ENE 6 | — | NE 4 | — | SSW 4 | SW 6 | SSW 6 | — |
| kJ | 116 | 151 | 392 | 725 | 994 | 1 | 5 | — | — | 8 | 77 | — | 41 | 53 | — | 11 | — | 16 | 92 | 124 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 767 | 1148 | 398 | 217 | 102 | 0 | 0 | 24 | 0 | 24 | 665 | 24 | 677 | 669 | 26 | 24 | 749 | 159 | 198 | 24 | 195 |
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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