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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 Tuesday 21 Apr 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
6.2° C
(Which is 1.1°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 6AM is: 0.2m 8s primary swell from a East direction and 0.2m 6s secondary swell from a South-southwest direction (forecast issued at 01:00am April 21). An open ocean swell of 0.9m 4s 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 Apr) | 0.5ft (0.2m) | 8s |
| Afternoon (21 Apr) | 2ft (0.6m) | 5s |
| Evening (21 Apr) | 1.5ft (0.4m) | 6s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 6 | 8 | 8 | 5 | 5 | 5 | 6 | 7 | 8 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 9 | 8 | 5 | 5 | 23 | 21 | 15 | 10 | 16 | 10 | 20 | 26 | 38 | 83 | 48 | 89 | 34 | 34 | 32 | 27 | 46 | 49 | 42 | 44 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross | off | off | cross- off | cross- off | cross- off | off | cross- off |
High Tide / height (m) | 11:02PM 1.04 | 11:35AM 0.79 | 12:00AM 0.97 | 12:37PM 0.76 | 1:05AM 0.89 | 1:48PM 0.74 | ||||||||||||||||||
Low Tide / height (m) | 5:53AM -0.04 | 5:10PM -0.03 | 7:03AM 0.02 | 6:20PM 0.04 | 8:15AM 0.04 | 8:00PM 0.09 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:56 | - | - | - | - | - | - | - | 5:54 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:31 | - | - | - | - | - | - | - | 7:32 | - | - | - | - | - | - | - | 7:34 | - |
 |  | |  | |  | | | | | |  | |  | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 3 | 2 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 5 | 4 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 6 | 6 | 9 | 13 | 15 | 11 |
| Feels °C (?) | -2 | -4 | -5 | -4 | 0 | -1 | -1 | -2 | -2 | -3 | -3 | -3 | -4 | -3 | -1 | 1 | 4 | 4 | 2 | 2 | 4 | 7 | 9 | 4 |
- 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
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