- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 Thursday 21 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
11.6° C
(Which is normal for this time of year)How big are the waves at Block Island today?
The current surf forecast for Block Island at 7AM is: 1.0m 6s primary swell from a South-southwest direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 01:00am May 21). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3ft (0.9m) | 6s |
| Afternoon (21 May) | 3ft (0.9m) | 5s |
| Evening (21 May) | 1.5ft (0.4m) | 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. Very mild (max 17°C on Thu morning, min 11°C on Thu afternoon). Winds increasing (light winds from the ENE on Thu night, fresh winds from the E by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | ENE 5 | SE 9 | SE 9 | S 6 | S 6 | S 6 | E 4 | E 4 | E 5 | ESE 5 | ESE 6 | SE 6 | SE 6 | SE 6 | ESE 4 | ESE 5 | ESE 6 | ESE 6 | SE 7 | |
113 | 88 | 72 | 53 | 40 | 32 | 29 | 29 | 19 | 18 | 16 | 13 | 40 | 49 | 41 | 40 | 28 | 29 | 25 | 28 | 50 | 115 | 141 | 163 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | |
High Tide | 11:51PM0.99m | 12:31PM0.84m | 00:51AM0.91m | 1:36PM0.84m | 1:55AM0.83m | 2:43PM0.85m | ||||||||||||||||||
Low Tide | 6:48AM-0.00m | 6:36PM0.06m | 7:49AM0.02m | 8:01PM0.11m | 8:48AM0.04m | 9:15PM0.13m | ||||||||||||||||||
 |  |  | | | | | | |  |  | |  | | | | | | | | | | | | |
 | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:02 | — | — | — | — | — | — | — | 8:04 | — | — | — | — | — | — | — | 8:04 | — |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 18 | 17 | 14 | 11 | 11 | 11 | 11 | 11 | 12 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 12 | 11 | 11 | 11 |
15 | 15 | 13 | 9 | 6 | 8 | 8 | 8 | 8 | 9 | 6 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 4 | |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | SE 9 | SE 9 | SE 9 | SE 10 | SE 6 | SE 6 | SE 6 | ESE 10 | SE 10 | SE 13 | S 13 | S 12 |
 kJ | 113 | 88 | 72 | 53 | 40 | 30 | 28 | 28 | 19 | 18 | 16 | 10 | 13 | 14 | 14 | 14 | 28 | 29 | 25 | 9 | 4 | 7 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | E 4 | ESE 4 | ESE 4 | SE 9 | SE 9 | SSW 6 | SSW 6 | SE 13 | SE 13 | SE 10 | SE 10 | ESE 10 | SE 13 | SE 13 | SE 13 | SE 13 | S 12 |
| kJ | 29 | 29 | 28 | 29 | 28 | 29 | 29 | 9 | 6 | 7 | 13 | 13 | 3 | 3 | 7 | 7 | 15 | 15 | 9 | 7 | 7 | 7 | 6 | 3 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | S 15 | SE 9 | SE 9 | SE 9 | SE 13 | SE 7 | SE 13 | SE 13 | — | — | SE 13 | SE 13 | S 6 | SE 13 | — | — | — | — |
| kJ | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 29 | 13 | 13 | 7 | 2 | 7 | 7 | — | — | 7 | 7 | 1 | 7 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NNW 3 | NNE 3 | NE 4 | ENE 5 | ENE 5 | E 5 | — | — | E 4 | E 4 | E 4 | E 4 | E 5 | ESE 5 | ESE 6 | ENE 4 | ENE 3 | ENE 3 | ESE 4 | ESE 5 | ESE 6 | ESE 6 | SE 7 |
| kJ | 2 | 3 | 3 | 13 | 33 | 32 | 17 | — | — | 9 | 9 | 13 | 40 | 49 | 41 | 40 | 3 | 2 | 6 | 28 | 50 | 115 | 141 | 163 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 24 | 24 | 24 | 25 | 156 | 642 | 645 | 156 | 680 | 689 | 672 | 689 | 680 | 693 | 693 | 588 | 588 | 702 | 705 | 588 | 523 | 1095 | 490 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest