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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 Friday 15 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
9.2° 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 5PM is: 1.0m 10s primary swell from a Southeast direction and 0.9m 9s secondary swell from a East-southeast direction (forecast issued at 01:00pm May 15). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 6ft (1.8m) | 9s |
| Afternoon (15 May) | 4.5ft (1.4m) | 9s |
| Evening (15 May) | 3.5ft (1.0m) | 9s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 23°C on Sun afternoon, min 10°C on Fri night). Winds increasing (light winds from the NNW on Fri night, fresh winds from the SW by Sat night). | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SE 9 | ESE 9 | SE 10 | SE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | SSE 9 | ESE 9 | ESE 9 | ESE 9 | SSW 5 | SW 6 | SW 6 | SSE 8 | SW 7 | SW 7 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SSW 7 | SSW 7 | |
382 | 313 | 185 | 170 | 154 | 154 | 154 | 119 | 126 | 86 | 88 | 58 | 95 | 229 | 223 | 94 | 125 | 135 | 159 | 180 | 154 | 103 | 85 | 51 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | |
High Tide | 7:24PM1.12m | 7:52AM0.86m | 8:14PM1.16m | 8:43AM0.87m | 9:06PM1.17m | |||||||||||||||||||
Low Tide | 12:41PM-0.09m | 2:05AM-0.11m | 1:29PM-0.12m | 2:56AM-0.12m | 2:19PM-0.12m | 3:50AM-0.10m | ||||||||||||||||||
 |  | |  |  | | | | | | | | | | |  |  | | | | | | | | |
 | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — |
 | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | 8:00 |
— | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 12 | 13 | 12 | 11 | 10 | 11 | 11 | 12 | 14 | 15 | 14 | 13 | 14 | 13 | 15 | 20 | 22 | 23 | 22 | 21 | 21 | 19 | 16 |
12 | 10 | 11 | 7 | 8 | 8 | 9 | 7 | 8 | 9 | 9 | 8 | 7 | 8 | 9 | 12 | 18 | 18 | 19 | 19 | 19 | 19 | 16 | 12 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | ESE 9 | SE 10 | SE 9 | ESE 10 | ESE 10 | SSE 9 | ESE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 7 | SW 7 | SSE 8 | SSE 8 | SE 8 | SSW 7 | SW 7 | SSW 7 | SSW 7 |
 kJ | 382 | 313 | 185 | 170 | 154 | 154 | 137 | 119 | 126 | 75 | 73 | 54 | 54 | 55 | 54 | 93 | 124 | 105 | 75 | 54 | 154 | 103 | 85 | 51 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | ESE 9 | E 9 | SSE 9 | SE 10 | ESE 10 | SSE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SSE 8 | SSE 8 | SSE 8 | — | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
| kJ | 130 | 130 | 144 | 106 | 106 | 115 | 154 | 53 | 108 | 86 | 88 | 58 | 44 | 43 | 28 | 94 | 125 | 128 | — | 11 | 43 | 67 | 39 | 40 |
Swell 3 Height (m) Direction Period (s) | — | E 9 | S 8 | S 8 | SE 10 | S 9 | SW 4 | SSE 10 | — | — | — | SSE 10 | — | — | — | ESE 8 | — | — | — | — | S 7 | — | — | — |
| kJ | — | 103 | 90 | 66 | 98 | 73 | 3 | 54 | — | — | — | 10 | — | — | — | 13 | — | — | — | — | 9 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 4 | SW 4 | SSW 3 | SW 4 | SSW 5 | SSW 5 | SW 6 | SW 6 | WSW 6 | — | SW 7 | SSW 7 | SSW 7 | — | — | ENE 3 | E 3 |
| kJ | — | — | — | — | — | — | — | 3 | 3 | 7 | 24 | 44 | 95 | 229 | 223 | 75 | — | 135 | 159 | 180 | — | — | 3 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 24 | 0 | 24 | 0 | 0 | 0 | 24 | 26 | 24 | 24 | 24 | 1148 | 133 | 24 | 24 | 0 | 26 | 24 | 217 | 24 | 24 | 24 | 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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