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Block Island Surf Forecast
/ Rhode Island (33 breaks) / Rhode Island (34 breaks) /
Surf Forecasts:
Block Island surfForecast / Rhode Island / USA
12 Day Weather and Surf, issued 12 am Saturday 06 Dec 2025 ESTForecast update in hr min s Forecast update imminent
Block Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Block Island sea temperature is
10.3° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Block Island this week:
The most powerful waves expected at Block Island in the next 12 days are 3.0m 9s and forecast to arrive on Friday (Dec 12) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Saturday (Dec 13) at 1AM.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Fri 12th Dec) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Block Island over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Icy conditions (max 5°C on Sat morning, min -4°C on Mon morning). Winds increasing (calm on Fri night, strong winds from the NNW by Sun night). | Days 3-6 Weather Summary Some drizzle, heaviest during Wed night. Icy conditions (max 11°C on Wed afternoon, min -4°C on Mon night). Winds increasing (calm on Mon night, near gales from the SW by Wed afternoon). | |||||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Fri 12 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 7 | 8 | 9 | 8 | 8 | 8 | 8 | 9 | 5 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 32 | 31 | 29 | 51 | 72 | 84 | 51 | 22 | 12 | 7 | 8 | 91 | 653 | 309 | 632 | 1168 | 786 | 597 | 259 | 1008 | 1313 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | cross | off | off | cross | cross- off | off | cross- off | cross- off | cross- on | cross- on | cross | cross- on | cross- on | cross | cross- off | cross | on | cross- off | cross- off | |
High Tide / height (m) | 8:22AM 1.13 | 8:46PM 0.84 | 9:14AM 1.07 | 9:42PM 0.83 | 10:08AM 0.98 | 10:40PM 0.80 | 11:02AM 0.89 | 11:42PM 0.78 | 11:59AM 0.80 | 12:46AM 0.77 | 1:00PM 0.72 | 1:49AM 0.77 | 2:02PM 0.66 | |||||||||
Low Tide / height (m) | 1:32AM -0.17 | 3:05PM -0.10 | 2:27AM -0.13 | 4:00PM -0.07 | 3:27AM -0.07 | 4:58PM -0.04 | 4:36AM 0.01 | 5:56PM -0.01 | 5:56AM 0.08 | 6:53PM 0.02 | 7:12AM 0.12 | 7:48PM 0.04 | 8:21AM 0.14 | |||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Fri 12 | ||||||||||||||||
| Sunrise | - | 6:56 | - | - | 6:56 | - | - | 6:58 | - | - | 6:58 | - | - | 7:00 | - | - | 7:01 | - | - | 7:01 | - | |
| Sunset | - | - | 4:16 | - | - | 4:16 | - | - | 4:16 | - | - | 4:16 | - | - | 4:16 | - | - | 4:16 | - | - | 4:16 | |
 |  |  |  |  | | | | | | | |  | | |  | | |  | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | 9 | - | - | |
| Temp. °C | 4 | 5 | 5 | 3 | 3 | 5 | 4 | -3 | -3 | -4 | 1 | 5 | 7 | 9 | 11 | 10 | 8 | 8 | 11 | 8 | 6 | |
| Feels °C (?) | -1 | 1 | -1 | -4 | -2 | -3 | -5 | -14 | -12 | -11 | -7 | -6 | -4 | 0 | 0 | 1 | 2 | 3 | 1 | -3 | -6 | |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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.
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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 12 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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