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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 Wednesday 13 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 1.2°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 4PM is: 1.7m 6s primary swell from a South-southwest direction and 0.3m 7s secondary swell from a East-southeast direction, 0.3m 10s secondary swell from a Southeast direction (forecast issued at 07:00am May 13). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 3.5ft (1.1m) | 5s |
| Afternoon (13 May) | 5ft (1.6m) | 6s |
| Evening (13 May) | 5.5ft (1.7m) | 6s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Thu afternoon. Very mild (max 14°C on Wed night, min 10°C on Thu night). Winds decreasing (strong winds from the S on Wed afternoon, light winds from the WNW by Thu night). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SE 8 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | E 9 | E 9 | E 9 | |
43 | 51 | 86 | 143 | 199 | 213 | 170 | 73 | 111 | 103 | 105 | 132 | 136 | 154 | 191 | 321 | 490 | 646 | 586 | 300 | 253 | 168 | 132 | 133 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | on | cross-on | cross-off | cross-off | off | off | off | cross-off | cross-off | off | off | off | cross-off | |
High Tide | 5:17AM0.76m | 5:45PM0.97m | 6:10AM0.80m | 6:34PM1.06m | 7:02AM0.83m | 7:24PM1.12m | ||||||||||||||||||
Low Tide | 11:10AM0.01m | 00:26AM-0.01m | 11:55AM-0.04m | 1:15AM-0.07m | 12:41PM-0.09m | |||||||||||||||||||
 |  | |  |  |  | | |  | |  |  | | | |  | | | | | | | | | |
 | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | 5:26 |
 | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:55 | — | — | — | — | — | — | — | 7:57 | — | — | 7:58 |
— | — | — | — | — | — | — | — | 1 | — | 1 | 11 | 3 | — | — | — | — | — | — | 1 | — | — | — | — | |
Temp °C | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 10 | 10 | 12 | 12 | 11 | 11 | 11 | 11 |
5 | 4 | 5 | 3 | 6 | 6 | 7 | 7 | 7 | 8 | 9 | 10 | 11 | 11 | 11 | 9 | 7 | 7 | 9 | 8 | 6 | 7 | 8 | 9 | |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | SW 6 | SW 6 | SW 6 | SW 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SE 8 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | E 9 | E 9 | E 9 |
 kJ | 15 | 15 | 9 | 9 | 9 | 9 | 10 | 64 | 30 | 16 | 11 | 132 | 136 | 154 | 191 | 321 | 490 | 646 | 586 | 300 | 253 | 168 | 132 | 133 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 7 | ESE 10 | ESE 10 | — | ESE 10 | ESE 10 | ESE 10 | SW 6 | SE 9 | — | — | — | SW 6 | E 10 | E 9 | SE 10 | SE 10 | SE 9 |
| kJ | 16 | 16 | 16 | 16 | 16 | 16 | 5 | 10 | 10 | — | 10 | 9 | 9 | 1 | 3 | — | — | — | 20 | 183 | 164 | 133 | 130 | 87 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 6 | ESE 10 | SW 6 | — | — | — | — | SW 6 | SW 6 | SW 6 | S 8 | S 8 | S 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 3 | 9 | 1 | — | — | — | — | 21 | 17 | 11 | 49 | 34 | 33 |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 43 | 51 | 86 | 143 | 199 | 213 | 170 | 73 | 111 | 103 | 105 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 161 | 161 | 1422 | 1428 | 988 | 1084 | 270 | 257 | 445 | 221 | 26 | 24 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 0 | 0 | 0 | 0 |
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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