
Surf Forecasts:
Block Island surf forecast from 9 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 5AM (local time) - 5ft (1.6m), 6s period, SW swell with 184 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 1.6m 6s and forecast to arrive on Wednesday (Jul 15) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Jul 10) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Wed 15th Jul) | 5ft (1.6m) 6s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Right, folks, Rusty here. Let’s have a look at what’s on the cards for Block Island.
Honestly, I’m looking at the next two weeks and it’s a proper struggle. The first week and a half is a write-off for anything decent. From Thursday the 9th of July right through to Sunday the 19th of July, we’re looking at a solid gap of nothing but poor surf conditions. Tiny waves, short periods, and mostly cross or onshore wind. The energy is weak, with the combined swell energy sitting below 100 (66) for most of that time. There’s no point even thinking about a paddle.
Then, things start to look a bit more interesting around the 20th of July. Monday morning the 20th, we see a jump in swell to 6 ft from the SSW, pushing the combined energy up to 205, which is moderate. The wind is a clean cross-off from the NE, so it’ll be tidy at Block Island. That’s the best looking window in the whole run. The swell is a bit on the short period side at 6 seconds, so it won’t be the most powerful, but it’s a clean, surfable wave for the intermediate crowd. The water temp is about average for the time of year, so no need to worry about a major thermocline.
The 21st and 22nd of July keep the swell around 6 ft to 7 ft from the SSW, with moderate energy (341 up to 459). The period is still short at 7 seconds, so it’s a bit bumpy and wind-affected, but those morning sessions on the 21st look like they might be okay with a light breeze. Be aware that these bigger swells, over 5 ft, aren’t for beginners, and anything over 8 ft, which we don’t quite hit, would be experts only.
The standout for the whole period is Monday morning, July the 20th. It’s the most consistent call with clean conditions and a moderate swell. The rest of the time, it’s mostly a kite-surfing show if the wind picks up, especially on the afternoons with the choppy cross-onshore stuff.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 27°C on Fri afternoon, min 20°C on Sat morning). Winds decreasing (fresh winds from the SW on Thu afternoon, light winds from the W by Fri morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sun afternoon, min 18°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 7 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SE 10 | SE 9 | SE 6 | SE 7 | SE 8 | SW 5 | SW 6 | SW 6 | SW 6 |
Wave Graph | |||||||||||||||||||||
54 | 26 | 51 | 49 | 31 | 42 | 62 | 65 | 48 | 43 | 42 | 30 | 16 | 13 | 18 | 48 | 55 | 78 | 150 | 99 | 67 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on |
High Tide | 3:00AM0.72m | 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 | ||||||||
Low Tide | 9:31PM0.14m | 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 | |||||||
— | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | |
8:21 | — | 8:20 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:17 | — | — | 8:16 | |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 22 | 25 | 27 | 27 | 22 | 23 | 21 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 22 |
Feels °C | 19 | 21 | 20 | 20 | 27 | 25 | 27 | 22 | 23 | 20 | 17 | 18 | 18 | 18 | 17 | 18 | 19 | 18 | 17 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 8 | E 8 | SSW 6 | E 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SE 6 | SE 7 | SE 8 | SE 8 | SE 7 | SE 9 | SE 9 |
54 | 26 | 32 | 20 | 31 | 10 | 62 | 65 | 48 | 43 | 42 | 30 | 16 | 9 | 18 | 48 | 55 | 36 | 27 | 27 | 27 | |
Swell 2 Height (m) Direction Period (s) | SSW 6 | SE 10 | SE 10 | SE 10 | E 8 | SE 9 | E 8 | SE 9 | SE 9 | ENE 4 | SE 10 | SE 10 | SE 5 | SE 9 | SE 9 | SSW 7 | SE 9 | SE 10 | SE 9 | SE 5 | SSE 6 |
7 | 14 | 15 | 15 | 20 | 14 | 10 | 14 | 14 | 5 | 14 | 14 | 6 | 13 | 13 | 5 | 13 | 4 | 13 | 1 | 3 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | — | — | — | SE 10 | — | SE 10 | E 7 | — | SE 10 | E 7 | E 7 | SE 10 | E 7 | SSW 6 | SSW 7 | E 7 | SE 10 | — | S 17 | S 17 |
14 | — | — | — | 15 | — | 14 | 4 | — | 14 | 1 | 1 | 14 | 1 | 4 | 5 | 4 | 4 | — | 6 | 5 | |
Wind waves Height (m) Direction Period (s) | WSW 3 | SW 4 | SW 5 | SSW 5 | — | SSW 6 | — | NE 3 | E 4 | — | ENE 3 | E 3 | — | SE 4 | — | — | SW 3 | SW 5 | SW 6 | SW 6 | SW 6 |
8 | 26 | 51 | 49 | — | 42 | — | 2 | 14 | — | 2 | 2 | — | 5 | — | — | 4 | 78 | 150 | 99 | 67 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 131 | 131 | 144 | 178 | 24 | 54 | 24 | 25 | 634 | 25 | 25 | 767 | 182 | 776 | 847 | 24 | 24 | 2500 | 249 | 397 | 221 |
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.











