Surf Forecasts:
Block Island surf forecast from 18 Jun 2026:
- Best quality surf: Monday 22 Jun, 8PM (local time) - 6ft (1.8m), 6s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 18 Jun, 11PM (local time) - 10ft (3.0m), 8s period, SSW swell with 871 kJ wave energy.
- Next surfable swell (1★+): Monday 22 Jun, 8PM (local time) - 6ft (1.8m), 6s 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 Monday (Jun 22) at 8PM. The primary swell is predicted to be 1.8m and 6s period with a secondary swell of 0.1m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (Jun 18) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Jun 20) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 22nd Jun) | 6ft (1.8m) 6s |
| Best Surf | 8PM (Mon 22nd Jun) | 6ft (1.8m) 6s |
| Most Powerful | 11PM (Thu 18th Jun) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Block Island over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Sat night, min 17°C on Sat night). Winds decreasing (strong winds from the S on Thu afternoon, light winds from the W by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 38mm), heaviest during Mon afternoon. Warm (max 21°C on Sun afternoon, min 16°C on Mon night). Winds decreasing (fresh winds from the SW on Sun afternoon, calm by Mon morning). | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 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) | S 6 | SSW 7 | SSW 8 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SW 6 | SSW 7 | SSW 8 | SSW 4 | SW 5 | SW 5 | SSE 5 | S 7 | S 7 | S 7 | SSE 7 | S 7 | SSW 7 | S 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 229 | 648 | 545 | 220 | 534 | 334 | 125 | 145 | 147 | 81 | 54 | 45 | 31 | 80 | 212 | 138 | 114 | 57 | 77 | 62 | 79 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-on | off | cross-off | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:16AM0.93m | 11:35PM0.99m | 12:15PM0.92m | 00:29AM0.90m | 1:14PM0.91m | 1:25AM0.81m | 2:14PM0.90m | 2:24AM0.74m | 3:13PM0.89m | 3:25AM0.69m | 4:11PM0.88m | 4:25AM0.66m | 5:05PM0.88m | ||||||||
Low Tide | 5:19PM0.01m | 6:21AM-0.02m | 6:31PM0.07m | 7:14AM0.01m | 7:42PM0.12m | 8:07AM0.05m | 8:49PM0.16m | 8:59AM0.09m | 9:51PM0.17m | 9:49AM0.12m | 10:48PM0.17m | 10:35AM0.15m | 11:40PM0.16m | ||||||||
 |  |  | |  | | | | | | |  |  |  |  | | | | | |  | |
 | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | 8:21 | — | — | 8:21 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 29 | 8 | — | — | — | — | — | 1 |
Temp °C | 19 | 21 | 22 | 19 | 21 | 21 | 20 | 22 | 23 | 20 | 21 | 21 | 20 | 19 | 17 | 19 | 20 | 20 | 20 | 21 | 20 |
Feels °C | 15 | 15 | 18 | 13 | 15 | 18 | 15 | 17 | 19 | 16 | 16 | 16 | 22 | 16 | 17 | 18 | 18 | 18 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 14 | SE 14 | SSW 8 | SSW 7 | SE 13 | SSW 8 | SSW 7 | SE 12 | SSW 7 | SSW 8 | SE 12 | SSW 7 | SW 5 | SSW 6 | S 7 | S 7 | S 7 | SSE 7 | S 7 | SE 7 | SE 7 |
| kJ | 8 | 8 | 545 | 220 | 7 | 334 | 125 | 6 | 147 | 81 | 6 | 17 | 31 | 4 | 212 | 138 | 114 | 57 | 77 | 8 | 7 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | SE 14 | SE 13 | — | SE 13 | SE 13 | — | SE 12 | SE 12 | SE 12 | SSE 7 | SSE 6 | — | SE 11 | NNE 4 | NE 4 | — | SE 8 | — | — |
| kJ | 1 | 1 | 8 | 7 | — | 7 | 7 | — | 6 | 6 | 6 | 9 | 8 | — | 5 | 6 | 1 | — | 9 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SE 12 | SSW 7 | — | SE 11 | — | SE 11 | — | SSW 7 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | 5 | — | 5 | — | 5 | — | 5 | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | SSW 7 | — | W 4 | SSW 8 | NW 4 | W 5 | SW 6 | NW 3 | W 3 | SSW 4 | SW 5 | W 4 | SSE 5 | NNW 3 | — | — | SW 4 | SW 7 | SSW 7 | S 6 |
| kJ | 229 | 648 | — | 31 | 534 | 5 | 57 | 145 | 3 | 6 | 54 | 45 | 9 | 80 | 5 | — | — | 29 | 36 | 62 | 79 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3363 | 422 | 25 | 26 | 219 | 25 | 25 | 25 | 24 | 24 | 634 | 25 | 85 | 117 | 0 | 24 | 26 | 24 | 26 | 1008 | 25 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest