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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 pm Saturday 16 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 1.7°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 3AM is: 1.7m 6s primary swell from a South-southwest direction and 0.8m 8s secondary swell from a South-southeast direction, 0.4m 9s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 16). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3.5ft (1.0m) | 8s |
| Afternoon (17 May) | 3ft (0.9m) | 8s |
| Evening (17 May) | 4.5ft (1.3m) | 7s |
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 13°C on Mon afternoon). Winds decreasing (fresh winds from the SW on Sat night, light winds from the S by Mon night). | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
ESE 9 | SSW 5 | SSW 6 | SSW 6 | SW 6 | SSE 8 | SSE 8 | SSE 8 | SW 7 | SW 6 | SW 7 | SW 7 | SSE 8 | SSW 7 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 9 | SSE 9 | SE 9 | SE 8 | SSW 5 | |
73 | 104 | 175 | 231 | 147 | 137 | 122 | 125 | 111 | 153 | 113 | 77 | 73 | 64 | 51 | 50 | 37 | 48 | 37 | 50 | 52 | 37 | 45 | 50 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | |
High Tide | 8:14PM1.16m | 8:43AM0.87m | 9:06PM1.17m | 9:36AM0.88m | 9:59PM1.13m | 10:30AM0.87m | ||||||||||||||||||
Low Tide | 2:56AM-0.12m | 2:19PM-0.12m | 3:50AM-0.10m | 3:12PM-0.11m | 4:47AM-0.07m | |||||||||||||||||||
 |  | | |  | |  | | | | | | |  | | | | | | | | | | | |
 | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — |
 | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | 8:00 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 15 | 15 | 14 | 14 | 16 | 20 | 22 | 23 | 24 | 22 | 21 | 17 | 16 | 15 | 14 | 13 | 16 | 18 | 18 | 18 | 17 | 18 | 20 |
10 | 8 | 8 | 8 | 10 | 13 | 18 | 19 | 19 | 21 | 20 | 20 | 12 | 11 | 9 | 10 | 10 | 14 | 18 | 17 | 17 | 14 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | SSE 8 | ESE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | 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 | SSE 9 | SE 9 | SE 8 | SE 8 |
 kJ | 73 | 62 | 54 | 53 | 110 | 137 | 94 | 125 | 98 | 54 | 53 | 77 | 73 | 64 | 35 | 50 | 37 | 48 | 37 | 50 | 52 | 37 | 45 | 45 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SSE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SSE 8 | — | — | SSE 8 | SE 8 | S 7 | SSE 8 | SSE 8 | SSE 8 | SSW 6 | SSW 6 | E 4 | E 4 | E 4 | — | SE 13 | SE 13 | SE 13 |
| kJ | 68 | 10 | 44 | 30 | 25 | 13 | 122 | — | — | 19 | 65 | 51 | 67 | 40 | 51 | 24 | 20 | 5 | 2 | 1 | — | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | SSE 10 | — | — | — | — | E 8 | — | — | — | — | SSE 8 | — | — | — | — | E 4 | S 13 | SE 13 | SE 13 | SE 13 | — | — | S 16 |
| kJ | — | 20 | — | — | — | — | 5 | — | — | — | — | 44 | — | — | — | — | 7 | 4 | 7 | 7 | 7 | — | — | 5 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 5 | SSW 6 | SSW 6 | SW 6 | SW 6 | — | SW 6 | SW 7 | SW 6 | SW 7 | — | NE 2 | E 4 | E 4 | E 4 | — | SSW 6 | SSW 6 | SSW 6 | SSW 4 | SSW 5 | SSW 5 | SSW 5 |
| kJ | 31 | 104 | 175 | 231 | 147 | 96 | — | 91 | 111 | 153 | 113 | — | 1 | 9 | 14 | 11 | — | 14 | 12 | 17 | 14 | 24 | 38 | 50 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 195 | 24 | 1148 | 133 | 24 | 24 | 24 | 26 | 24 | 29 | 25 | 0 | 25 | 45 | 157 | 634 | 634 | 634 | 209 | 209 | 221 | 219 | 219 | 2500 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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