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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 am 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 5AM is: 1.4m 9s primary swell from a Southeast direction and 0.8m 7s secondary swell from a South direction (forecast issued at 01:00am May 15). The wind direction is predicted to be 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 ForecastMostly dry. Warm (max 24°C on Sun night, min 10°C on Fri morning). Winds increasing (light winds from the W on Fri morning, fresh winds from the SW by Sat night). | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||||||||||
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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSE 7 | SE 9 | SE 9 | SE 9 | ESE 9 | SE 10 | SE 9 | ESE 9 | ESE 10 | SSE 9 | ESE 9 | SSE 9 | ESE 9 | ESE 9 | SW 5 | SSW 5 | SSW 6 | SSW 6 | S 7 | SW 7 | SW 7 | SSW 7 | SSW 7 | SSW 7 | |
113 | 281 | 519 | 382 | 313 | 185 | 170 | 141 | 123 | 123 | 115 | 101 | 86 | 62 | 62 | 125 | 177 | 196 | 143 | 135 | 139 | 147 | 155 | 138 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | cross | cross | off | off | off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | off | |
High Tide | 7:02AM0.83m | 7:24PM1.12m | 7:52AM0.86m | 8:14PM1.16m | 8:43AM0.87m | 9:06PM1.17m | ||||||||||||||||||
Low Tide | 1:15AM-0.07m | 12:41PM-0.09m | 2:05AM-0.11m | 1:29PM-0.12m | 2:56AM-0.12m | 2:19PM-0.12m | ||||||||||||||||||
 |  |  | | |  | |  | | |  | | | | | | | | | | | | | | |
 | — | 5:28 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 11 | 10 | 12 | 12 | 13 | 13 | 11 | 10 | 10 | 11 | 13 | 14 | 15 | 14 | 14 | 14 | 15 | 16 | 18 | 21 | 23 | 24 | 24 |
9 | 9 | 7 | 10 | 9 | 10 | 9 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 8 | 9 | 12 | 13 | 16 | 18 | 20 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SE 9 | SE 9 | SE 9 | ESE 9 | SE 10 | SE 9 | ESE 9 | ESE 10 | SSE 9 | ESE 9 | SSE 9 | SSE 8 | ESE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 7 | SSE 8 | SSE 8 | SE 8 | SSE 8 | SSW 7 |
 kJ | 113 | 281 | 519 | 382 | 313 | 185 | 170 | 141 | 123 | 111 | 115 | 101 | 75 | 62 | 54 | 54 | 55 | 41 | 143 | 116 | 94 | 57 | 73 | 138 |
Swell 2 Height (m) Direction Period (s) | SE 9 | S 7 | — | S 9 | S 9 | ESE 9 | E 9 | SSE 9 | SE 10 | ESE 10 | S 8 | ESE 9 | ESE 9 | SSE 8 | ESE 9 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSE 8 | — | SSE 8 |
| kJ | 39 | 69 | — | 130 | 129 | 144 | 106 | 106 | 115 | 123 | 48 | 84 | 86 | 55 | 62 | 41 | 42 | 22 | 22 | 12 | 11 | 11 | — | 71 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 9 | S 8 | S 8 | SE 10 | S 9 | SW 4 | SSE 9 | ESE 9 | — | SSE 11 | SSE 10 | SSE 10 | — | — | ESE 8 | E 8 | E 8 | — | — | — |
| kJ | — | — | — | — | 103 | 69 | 49 | 100 | 73 | 3 | 59 | 56 | — | 12 | 11 | 20 | — | — | 22 | 12 | 10 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 4 | WSW 3 | WSW 4 | NNE 2 | N 3 | — | SW 4 | SW 3 | SW 4 | SW 4 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SW 6 | SW 7 | SW 7 | SSW 7 | SSW 7 | — |
| kJ | — | — | — | — | 6 | 3 | 15 | 1 | 1 | — | 3 | 3 | 17 | 36 | 51 | 125 | 177 | 196 | 73 | 135 | 139 | 147 | 155 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 24 | 24 | 0 | 0 | 0 | 0 | 24 | 26 | 24 | 24 | 209 | 131 | 133 | 24 | 24 | 24 | 32 | 26 | 24 | 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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