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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 Tuesday 12 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
9.1° C
(Which is 1.0°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: 0.5m 7s primary swell from a East-southeast direction and 0.3m 10s secondary swell from a Southeast direction, 0.6m 3s secondary swell from a Southwest direction (forecast issued at 01:00pm May 12). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2.5ft (0.7m) | 8s |
| Afternoon (12 May) | 2ft (0.6m) | 8s |
| Evening (12 May) | 1.5ft (0.5m) | 7s |
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 5mm), mostly falling on Thu afternoon. Very mild (max 14°C on Wed night, min 11°C on Tue night). Winds decreasing (fresh winds from the S on Wed afternoon, light winds from the SSW by Thu afternoon). | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | SW 4 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | S 6 | S 6 | SSE 5 | SSE 5 | S 6 | S 6 | SSE 6 | SSE 7 | SE 8 | SE 9 | SE 9 | |
51 | 44 | 31 | 30 | 28 | 32 | 35 | 31 | 52 | 99 | 131 | 128 | 145 | 156 | 125 | 62 | 62 | 39 | 54 | 90 | 132 | 330 | 440 | 508 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | off | |
High Tide | 4:57PM0.87m | 5:17AM0.76m | 5:45PM0.97m | 6:10AM0.80m | 6:34PM1.06m | 7:02AM0.83m | ||||||||||||||||||
Low Tide | 10:26AM0.06m | 11:36PM0.06m | 11:10AM0.01m | 00:26AM-0.01m | 11:55AM-0.04m | 1:15AM-0.07m | ||||||||||||||||||
 | | |  |  |  | |  |  | | | | | | |  |  | | | | | | | | |
 | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — |
 | — | — | 7:53 | — | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:55 | — | — | — | — | 7:57 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 1 | — | — | — | — | — | |
Temp °C | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 12 | 11 |
9 | 6 | 4 | 4 | 4 | 5 | 6 | 5 | 4 | 4 | 7 | 8 | 8 | 9 | 8 | 10 | 10 | 10 | 11 | 11 | 10 | 12 | 9 | 9 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SW 6 | SSE 5 | S 6 | S 6 | SSE 6 | SSE 7 | SE 8 | SE 9 | SE 9 |
 kJ | 51 | 44 | 31 | 30 | 28 | 19 | 15 | 15 | 9 | 9 | 9 | 16 | 10 | 10 | 10 | 20 | 62 | 39 | 54 | 90 | 132 | 330 | 440 | 508 |
Swell 2 Height (m) Direction Period (s) | NW 3 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 7 | E 7 | SE 10 | ESE 10 | ESE 10 | SW 6 | ESE 5 | ESE 6 | ESE 10 | E 6 | SSW 7 | SSW 6 | — |
| kJ | 2 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 9 | 4 | 16 | 10 | 10 | 20 | 20 | 17 | 10 | 17 | 9 | 24 | — |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | — | — | — | — | — | — | — | — | — | — | — | E 7 | — | — | ESE 10 | SW 6 | ESE 10 | E 6 | SW 5 | — | — | — |
| kJ | 17 | 17 | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | 10 | 8 | 9 | 3 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | SW 6 | SW 3 | SW 4 | SW 4 | SW 4 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | S 6 | S 6 | SSE 5 | ESE 5 | — | — | — | — | — | — | — |
| kJ | 8 | 8 | 9 | 20 | 25 | 32 | 35 | 31 | 52 | 99 | 131 | 128 | 145 | 156 | 125 | 62 | 19 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 152 | 152 | 634 | 195 | 195 | 160 | 207 | 988 | 1095 | 844 | 844 | 257 | 270 | 445 | 24 | 85 | 24 | 141 | 24 | 24 | 0 | 0 | 0 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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