Surf Forecasts:
Block Island surf forecast from 15 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 2AM (local time) - 10ft (3.0m), 9s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 2AM (local time) - 10ft (3.0m), 9s period, SSW swell with 1,604 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 8PM (local time) - 4.5ft (1.4m), 6s period with SW 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 15) at 8PM. The primary swell is predicted to be 1.4m and 6s period with a secondary swell of 1.2m and 6s. Another secondary swell of 0.2m and 9s is also forecast. 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 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Jul 15) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 15th Jul) | 4.5ft (1.4m) 6s |
| Best Surf | 2AM (Wed 22nd Jul) | 10ft (3.0m) 9s |
| Most Powerful | 2AM (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 be straight with you – this is a tough one for Block Island. I’ve looked over the next 16 days, and honestly, there’s nothing that gets me fired up. The whole run is a long stretch of poor surf conditions, with hardly a window that’s worth paddling out for.
The first sign of any swell comes in on Wednesday, July 15th, with a SW swell around 4 ft, but it’s a short-period 6-second windswell, and the wind is howling cross-off at 16 mph. That combo makes for weak, messy waves. The combined energy is only 154 (weak), so it’s not packing any punch. For the next several days, it’s a real bummer – tiny waves, lumpy cross-chop, and onshore winds just kill any hope. There’s a gap of nearly a week of nothing but poor surf.
Temperatures are about average for the time of year at 68°, so nothing weird there.
We do see a bump in size around Monday, July 20th, with a 6 ft S swell and a 9-second period. The combined energy jumps to 567 (moderate), which is promising. But the wind is cross-on from the E and SE, making it choppy. The swell is too big for beginners at that size, and with the onshore wind, it’s just a lumpy mess. It could be better for a kite surfer than a paddle surfer, to be honest.
The only sliver of hope comes on Wednesday, July 22nd, with a solid 7 ft SSW swell and a 9-second period (energy 739 – moderate). The wind is a clean cross-off from the W at 12 mph, which is a major positive. That’s the best-looking window of the whole forecast, but it’s still rated as marginal. This size is for experienced surfers only, and the spot is a point break that rarely breaks, so you’d be gambling on it. The optimum swell direction is SE, and this is coming from the SSW, so it’s not a perfect match.
After that, the following week is more of the same with small, onshore, choppy slop. The last few days of July and into the 30th show some longer period swell (11 seconds), but the height is tiny at 2 ft, and the wind is cross-on again.
Bottom line: Block Island is a quiet corner for the next 16 days. If you’re desperate, the morning of July 22nd is your best bet, but don’t expect magic. The setup looks more interesting for kite surfing than paddle surfing for most of it. Forecasts can change, but right now, it’s a long, blank run.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 22°C on Fri morning). Winds increasing (calm on Wed night, fresh winds from the SW by Thu afternoon). | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sat afternoon. Warm (max 24°C on Sun afternoon, min 19°C on Sat afternoon). Winds decreasing (fresh winds from the SSW on Sat night, calm by Sun night). | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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) | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SW 7 | SSW 7 | S 8 | S 9 | S 9 | S 9 | S 9 | SSW 8 | SSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 136 | 146 | 61 | 40 | 63 | 28 | 15 | 10 | 8 | 15 | 8 | 138 | 178 | 208 | 245 | 561 | 528 | 304 | 439 | 599 | 1604 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross | cross | cross-off | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross | cross | cross-on | cross-on | on | cross-on | cross | off |
High Tide | 9:10AM0.96m | 9:34PM1.10m | 10:03AM0.99m | 10:23PM1.05m | 10:56AM1.00m | 11:11PM0.97m | 11:49AM0.98m | 00:00AM0.88m | 12:42PM0.95m | 00:50AM0.79m | 1:37PM0.91m | 1:44AM0.71m | 2:35PM0.87m | 2:44AM0.66m | |||||||
Low Tide | 3:06PM-0.07m | 4:10AM-0.07m | 4:06PM-0.04m | 4:57AM-0.05m | 5:07PM0.01m | 5:43AM-0.02m | 6:08PM0.07m | 6:28AM0.03m | 7:10PM0.13m | 7:13AM0.09m | 8:13PM0.18m | 8:00AM0.14m | 9:16PM0.21m | ||||||||
 |  |  | | |  | | | | |  |  | | | | | | |  | | | |
 | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — |
 | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | 6 | 8 | — | — | — | — | — | — | 2 | 2 | — |
Temp °C | 27 | 31 | 31 | 26 | 27 | 28 | 23 | 26 | 25 | 23 | 21 | 22 | 23 | 24 | 24 | 21 | 22 | 23 | 23 | 23 | 24 |
Feels °C | 26 | 30 | 29 | 25 | 22 | 26 | 22 | 22 | 21 | 23 | 19 | 19 | 20 | 22 | 27 | 20 | 23 | 24 | 23 | 22 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SSW 6 | SSW 6 | SE 9 | SSW 6 | SSW 5 | SE 8 | SSW 5 | SSW 5 | SSW 5 | SE 8 | SW 7 | SE 12 | S 8 | S 9 | S 9 | S 9 | — | — | SSW 9 |
| kJ | 12 | 12 | 61 | 40 | 3 | 28 | 15 | 3 | 8 | 15 | 8 | 3 | 178 | 6 | 245 | 561 | 528 | 304 | — | — | 1258 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 17 | ESE 9 | SE 8 | S 15 | SE 9 | E 3 | — | SE 8 | SE 8 | SE 8 | SE 13 | SE 8 | SE 12 | SE 12 | SE 12 | SE 12 | ESE 5 | SE 12 | — | — |
| kJ | 6 | 5 | 7 | 3 | 4 | 3 | 1 | — | 3 | 3 | 3 | 7 | 2 | 6 | 6 | 6 | 6 | 27 | 5 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | S 17 | S 15 | — | SE 15 | SE 8 | SE 14 | SE 14 | SE 13 | SE 13 | E 8 | SE 13 | — | — | — | — | S 12 | — | — | — |
| kJ | — | — | 5 | 4 | — | 9 | 3 | 8 | 8 | 7 | 7 | 1 | 7 | — | — | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | NNW 3 | — | SSW 6 | — | — | SSW 5 | — | — | — | SSW 6 | — | SSW 7 | — | — | ESE 5 | — | S 9 | SSW 8 | SSW 9 |
| kJ | 136 | 146 | 2 | — | 63 | — | — | 10 | — | — | — | 138 | — | 208 | — | — | 33 | — | 439 | 599 | 1604 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 49 | 1701 | 634 | 634 | 642 | 1084 | 2594 | 433 | 270 | 25 | 24 | 24 | 251 | 24 | 24 | 24 | 195 | 0 |
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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