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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 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 4AM is: 0.7m 4s primary swell from a South-southwest direction and 0.3m 7s secondary swell from a East direction, 0.3m 8s secondary swell from a Southeast direction (forecast issued at 07:00pm April 21). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | 2.5ft (0.8m) | 4s |
| Afternoon (22 Apr) | 4.5ft (1.3m) | 5s |
| Evening (22 Apr) | 4.5ft (1.3m) | 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 | Friday 24 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 7 | 7 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 8 | 9 | 16 | 9 | 12 | 19 | 35 | 69 | 119 | 123 | 104 | 87 | 64 | 56 | 47 | 85 | 78 | 70 | 57 | 57 | 42 | 35 | 24 | 23 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross | cross | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- on |
High Tide / height (m) | 12:00AM 0.97 | 12:37PM 0.76 | 1:05AM 0.89 | 1:48PM 0.74 | 2:17AM 0.82 | |||||||||||||||||||
Low Tide / height (m) | 5:10PM -0.03 | 7:03AM 0.02 | 6:20PM 0.04 | 8:15AM 0.04 | 8:00PM 0.09 | 9:20AM 0.05 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:56 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - |
| Sunset | 7:31 | - | - | - | - | - | - | - | 7:32 | - | - | - | - | - | - | - | 7:34 | - | - | - | - | - | - | - |
 |  |  |  | |  | | |  | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 5 | 5 | 5 | 5 | 4 | 3 | 4 | 5 | 6 | 7 | 7 | 7 | 6 | 7 | 9 | 12 | 14 | 12 | 10 | 9 | 8 | 7 | 8 | 8 |
| Feels °C (?) | -1 | -1 | -2 | -2 | -3 | -4 | -4 | -3 | -2 | 1 | 3 | 4 | 2 | 4 | 4 | 6 | 10 | 7 | 5 | 4 | 3 | 2 | 5 | 3 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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