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Block Island Surf Forecast
/ Rhode Island (33 breaks) / Rhode Island (34 breaks) /
Surf Forecasts:
Block Island surfForecast / Rhode Island / USA
48hr Weather and Surf, issued 1 pm Sunday 17 May 2026 EDTForecast 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
9.4° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Block Island today?
The current surf forecast for Block Island at 9PM is: 1.1m 7s primary swell from a Southwest direction and 0.6m 8s secondary swell from a Southeast direction, 0.5m 8s secondary swell from a South direction (forecast issued at 01:00pm May 17). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3ft (0.9m) | 8s |
| Afternoon (17 May) | 3ft (0.9m) | 8s |
| Evening (17 May) | 3.5ft (1.1m) | 7s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 24°C on Sun afternoon, min 16°C on Mon morning). Winds increasing (light winds from the NW on Sun night, fresh winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 8 | SSE 8 | SSE 8 | SW 7 | SW 7 | SW 7 | SSW 7 | SSW 7 | SSE 8 | SSE 8 | SSW 6 | SSE 7 | SSW 5 | SE 9 | SSW 5 | SE 9 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SW 7 | SW 7 | |
122 | 100 | 100 | 131 | 116 | 106 | 96 | 68 | 51 | 50 | 41 | 37 | 33 | 37 | 49 | 56 | 58 | 75 | 107 | 156 | 223 | 261 | 342 | 295 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | cross | cross | off | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | |
High Tide | 8:43AM0.87m | 9:06PM1.17m | 9:36AM0.88m | 9:59PM1.13m | 10:30AM0.87m | 10:54PM1.07m | ||||||||||||||||||
Low Tide | 2:19PM-0.12m | 3:50AM-0.10m | 3:12PM-0.11m | 4:47AM-0.07m | 4:09PM-0.06m | 5:47AM-0.04m | ||||||||||||||||||
 | | |  |  | | | | |  | | | | | | |  | | | |  | | | | |
 | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — |
 | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — | — | — | 8:01 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 22 | 24 | 24 | 23 | 21 | 19 | 17 | 16 | 16 | 19 | 20 | 20 | 18 | 20 | 19 | 21 | 23 | 23 | 19 | 20 | 21 | 17 | 17 |
18 | 19 | 20 | 19 | 20 | 20 | 17 | 14 | 13 | 16 | 19 | 18 | 18 | 15 | 18 | 17 | 18 | 20 | 19 | 14 | 17 | 17 | 13 | 13 | |
Swell 1 Height (m) Direction Period (s) | SW 6 | SSE 8 | SSE 8 | SE 8 | S 7 | SW 7 | SSW 7 | SSW 7 | SSW 6 | SSE 8 | SSE 7 | SSE 7 | SE 8 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 |
 kJ | 94 | 100 | 100 | 54 | 54 | 106 | 96 | 68 | 34 | 50 | 37 | 37 | 28 | 37 | 38 | 47 | 45 | 45 | 45 | 44 | 42 | 44 | 38 | 28 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | — | — | S 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 6 | ENE 4 | E 4 | — | — | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | S 16 | S 16 | S 16 | S 15 | S 15 |
| kJ | 122 | — | — | 29 | 54 | 45 | 54 | 40 | 51 | 25 | 1 | 1 | — | — | 7 | 7 | 7 | 7 | 7 | 5 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | E 8 | — | — | — | — | S 7 | — | — | — | ENE 3 | S 13 | S 13 | SE 13 | SE 13 | — | — | — | S 16 | S 16 | — | — | — | — | — |
| kJ | 5 | — | — | — | — | 27 | — | — | — | 2 | 4 | 4 | 7 | 7 | — | — | — | 5 | 5 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 6 | SW 7 | SW 7 | SW 7 | — | — | — | ENE 3 | — | SSW 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SW 7 | SW 7 |
| kJ | — | 83 | 85 | 131 | 116 | — | — | — | 2 | — | 41 | 27 | 33 | 36 | 49 | 56 | 58 | 75 | 107 | 156 | 223 | 261 | 342 | 295 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 26 | 24 | 32 | 24 | 0 | 24 | 47 | 445 | 634 | 634 | 634 | 335 | 204 | 204 | 204 | 340 | 209 | 219 | 195 | 24 | 40 | 40 | 24 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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