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Surf Forecasts:
Block Island surfForecast / Rhode Island / USA
48hr Weather and Surf, issued 6 am Thursday 11 Dec 2025 ESTForecast 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
9.6° 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 12PM is: 0.1m 9s primary swell from a East direction and 0.1m 7s secondary swell from a East direction (forecast issued at 06:00am December 11). An open ocean swell of 2.3m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 7ft (2.1m) | 8s |
| Afternoon (11 Dec) | 0.5ft (0.1m) | 9s |
| Evening (11 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 9 | 9 | 8 | 10 | 9 | 7 | 7 | 7 | 9 | 9 | 9 | 9 | 8 | 6 | 5 | 4 | 5 | 5 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 834 | 602 | 497 | 2 | 213 | 179 | 47 | 28 | 0 | 0 | 0 | 2 | 2 | 2 | 1 | 1 | 39 | 30 | 16 | 47 | 124 | 143 | 134 | 111 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 1:00PM 0.72 | 1:49AM 0.77 | 2:02PM 0.66 | 2:49AM 0.77 | 3:02PM 0.62 | |||||||||||||||||||
Low Tide / height (m) | 7:12AM 0.12 | 7:48PM 0.04 | 8:21AM 0.14 | 8:39PM 0.06 | 9:21AM 0.14 | 9:25PM 0.08 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:16 | - | - | - |
 |  |  | | | | | | | | | | | | | |  | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 3 | 0 | 0 | -1 | 0 | -1 | -2 | -3 | -3 | -3 | -1 | 0 | 1 | 0 | 0 | 1 | 2 | 3 | 4 | 5 | 4 | 4 | 2 |
| Feels °C (?) | -4 | -7 | -11 | -12 | -15 | -15 | -15 | -16 | -15 | -14 | -14 | -12 | -10 | -8 | -9 | -8 | -5 | -5 | -5 | -4 | -5 | -5 | -6 | -7 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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