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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 7 am 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 3PM is: 0.9m 8s primary swell from a South-southeast direction and 1.0m 7s secondary swell from a Southwest direction (forecast issued at 07:00am May 17). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3ft (0.9m) | 8s |
| Afternoon (17 May) | 3ft (0.9m) | 8s |
| Evening (17 May) | 4ft (1.2m) | 7s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 24°C on Sun night, min 14°C on Mon afternoon). Winds increasing (light winds from the WNW on Sun night, fresh winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 6 | SSE 8 | SSE 8 | SSE 8 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 7 | SSW 7 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 9 | SE 9 | SE 9 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SW 7 | |
151 | 113 | 122 | 100 | 100 | 135 | 131 | 114 | 88 | 68 | 51 | 50 | 48 | 37 | 37 | 50 | 38 | 50 | 60 | 94 | 143 | 223 | 329 | 415 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | 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 | 2:56AM-0.12m | 2:19PM-0.12m | 3:50AM-0.10m | 3:12PM-0.11m | 4:47AM-0.07m | 4:09PM-0.06m | ||||||||||||||||||
 |  | | | |  | | | | | | | | | |  | | |  | | | | | | |
 | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | 5:24 |
 | — | — | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — | 8:01 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 16 | 20 | 22 | 22 | 24 | 22 | 21 | 19 | 16 | 15 | 14 | 16 | 20 | 20 | 17 | 18 | 18 | 20 | 20 | 21 | 18 | 18 | 17 |
10 | 13 | 18 | 19 | 18 | 20 | 20 | 21 | 16 | 12 | 11 | 12 | 15 | 18 | 19 | 15 | 16 | 15 | 17 | 17 | 17 | 12 | 13 | 12 | |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SW 6 | SW 6 | SSE 8 | SSE 8 | SE 8 | S 7 | SW 7 | SSW 7 | SSW 7 | SSW 6 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 |
 kJ | 137 | 113 | 94 | 100 | 73 | 54 | 54 | 114 | 88 | 68 | 34 | 50 | 48 | 37 | 37 | 50 | 38 | 46 | 45 | 45 | 45 | 46 | 46 | 49 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | SSE 8 | SSE 8 | — | — | S 8 | SE 8 | S 7 | SSE 8 | SSE 8 | SSE 8 | SSW 6 | E 4 | E 4 | E 4 | E 4 | — | SE 13 | SE 13 | SE 13 | S 16 | S 16 | S 16 | S 16 |
| kJ | 22 | 113 | 122 | — | — | 29 | 54 | 39 | 54 | 51 | 51 | 24 | 7 | 3 | 1 | 1 | — | 7 | 7 | 7 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | ESE 8 | E 8 | — | — | — | — | SSE 8 | — | — | — | — | S 13 | S 13 | SE 13 | SE 13 | SE 13 | — | — | S 16 | S 13 | — | — | — |
| kJ | — | 13 | 5 | — | — | — | — | 44 | — | — | — | — | 4 | 4 | 7 | 7 | 7 | — | — | 5 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | — | — | SW 6 | SW 7 | SW 7 | SW 7 | — | — | ENE 3 | E 4 | E 4 | SSW 6 | SSW 6 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SW 7 |
| kJ | 151 | — | — | 83 | 100 | 135 | 131 | — | — | 3 | 12 | 10 | 24 | 20 | 17 | 23 | 35 | 50 | 60 | 94 | 143 | 223 | 329 | 415 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 26 | 24 | 34 | 24 | 0 | 25 | 157 | 634 | 634 | 634 | 634 | 198 | 230 | 225 | 217 | 219 | 1095 | 209 | 209 | 40 | 216 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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