Surf Forecasts:
Block Island surf forecast from 9 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 2AM (local time) - 7.5ft (2.3m), 7s period, SW swell with 466 kJ wave energy.
Best Forecast Surf Conditions for Block Island this week:
The most powerful waves expected at Block Island in the next 16 days are 2.3m 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 0.7m 4s period and expected on Sunday (Jul 12) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 15th Jul) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Alright, folks, Rusty here. Let’s look at what’s shaping up for Block Island.
To be straight with you, the next week and a half is pretty grim. We’ve got a long stretch of weak, short-period swell and just about every wind direction you don’t want. The good news is, there’s a light at the end of the tunnel, but you’re gonna have to be patient.
The first real nod goes to Sunday morning, July 19th. That’s your standout. We’ll see a modest 4ft swell coming from the SSW, but the real kicker is the wind. Glassy conditions – total glass – with a light WNW breeze at just 3 mph. That’s going to put a clean, smooth face on the waves. The wave energy is moderate at 159, which is respectable for this kind of setup. Water temp is a bit cooler than normal for this time of year at 67°. Block Island is a point break that rarely breaks, so when it does, and it’s this clean, you want to be on it. Expect crowds because it’s often busy here.
Later in the window, on Tuesday morning, July 21st, the swell jumps up to 6ft from the SSW. That’s a bigger option, but it's blowing onshore from the SSE at 9 mph, which makes it a bit messy. The energy is strong though, with a reading of 605. That’s more for the experienced crew, as it’s getting into the too-big-for-beginners range. The wind isn’t ideal, so it’s a real gamble compared to that glassy Sunday session.
Between now and that Sunday the 19th, it’s mostly a write-off. Small swell, onshore winds, and a lot of chop. You’ll see a few cleaner moments on the 15th and 18th with cross-off winds, but the swell is tiny and weak. It’s a dry spell until that glassy morning.
So, if you’re keen, pencil in Sunday morning, July 19th. That’s the one. Everything else is a waiting game.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Fri morning. Warm (max 27°C on Fri afternoon, min 18°C on Sat night). Winds decreasing (fresh winds from the SW on Thu afternoon, light winds from the N by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue morning, min 18°C on Sun morning). Winds increasing (light winds from the NNE on Sun night, strong winds from the SW by Tue night). | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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) | E 7 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | S 7 | SSW 7 | SSW 7 | SE 10 | SE 9 | ESE 9 | ESE 7 | SE 9 | SW 6 | SW 7 | SW 6 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 27 | 51 | 66 | 43 | 42 | 58 | 63 | 48 | 34 | 42 | 30 | 16 | 22 | 30 | 15 | 45 | 224 | 466 | 91 | 62 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-off | off | cross | cross | cross-off | cross-off | cross-on | cross-off | on | cross-on | cross | cross | cross-on | cross | cross-off | cross-off | off |
High Tide | 3:38PM0.97m | 4:07AM0.72m | 4:45PM1.02m | 5:15AM0.75m | 5:51PM1.08m | 6:19AM0.80m | 6:53PM1.12m | 7:18AM0.85m | 7:50PM1.15m | 8:15AM0.91m | 8:43PM1.14m | 9:10AM0.96m | 9:34PM1.10m | ||||||||
Low Tide | 8:46AM0.05m | 10:44PM0.11m | 9:48AM0.03m | 11:48PM0.07m | 10:52AM-0.01m | 00:47AM0.02m | 11:58AM-0.05m | 1:41AM-0.02m | 1:02PM-0.08m | 2:33AM-0.05m | 2:05PM-0.09m | 3:23AM-0.06m | 3:06PM-0.07m | 4:10AM-0.07m | |||||||
 | |  |  |  | | | |  | | | | | | | | |  | | | | |
 | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — |
 | — | 8:20 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:17 | — | — | 8:16 | — |
mm | — | — | 2 | 3 | — | 2 | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 22 | 22 | 22 | 24 | 27 | 26 | 22 | 22 | 21 | 21 | 22 | 21 | 20 | 21 | 21 | 23 | 23 | 22 | 23 | 29 | 25 |
Feels °C | 21 | 20 | 20 | 26 | 25 | 28 | 24 | 24 | 20 | 19 | 19 | 19 | 19 | 17 | 17 | 19 | 18 | 15 | 23 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 8 | E 8 | SSW 6 | E 8 | SSW 7 | SSW 7 | SSW 7 | S 7 | SSW 7 | SSW 7 | SSW 7 | SE 9 | ESE 9 | ESE 7 | SE 9 | SE 9 | SE 9 | SW 6 | SSW 6 | SSW 6 |
| kJ | 26 | 32 | 20 | 43 | 11 | 58 | 63 | 48 | 34 | 42 | 30 | 16 | 22 | 30 | 15 | 39 | 20 | 13 | 91 | 62 | 33 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | E 8 | SE 9 | E 8 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | E 4 | SSW 7 | SSW 6 | SE 9 | SE 9 | — | — | SE 9 | SE 9 | SE 9 |
| kJ | 14 | 15 | 15 | 21 | 14 | 10 | 14 | 14 | 15 | 14 | 14 | 6 | 9 | 8 | 12 | 12 | — | — | 12 | 12 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 10 | SE 9 | SE 10 | E 7 | E 7 | E 7 | E 8 | E 7 | SE 10 | E 7 | S 7 | — | — | — | — | S 17 | — | — |
| kJ | — | — | — | 15 | 14 | 14 | 4 | 4 | 1 | 1 | 1 | 14 | 1 | 1 | — | — | — | — | 6 | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | SSW 5 | — | SSW 6 | — | NE 3 | ENE 3 | ENE 4 | ENE 4 | E 4 | — | — | S 2 | SSW 4 | SW 4 | SW 6 | SW 7 | N 3 | — | — |
| kJ | 27 | 51 | 66 | — | 42 | — | 3 | 2 | 9 | 10 | 9 | — | — | 1 | 11 | 45 | 224 | 466 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 131 | 131 | 195 | 24 | 85 | 24 | 25 | 767 | 445 | 769 | 767 | 163 | 377 | 847 | 311 | 219 | 2715 | 605 | 24 | 26 | 85 |
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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