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Plum Island Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Plum Island surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 7 pm Monday 20 Apr 2026 EDTForecast update in hr min s Forecast update imminent
Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Plum Island sea temperature is
6.9° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Plum Island today?
The current surf forecast for Plum Island at 12AM is: 0.4m 8s primary swell from a East direction and 0.2m 7s secondary swell from a South-southeast direction, 0.6m 3s secondary swell from a North direction (forecast issued at 07:00pm April 20). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 1.5ft (0.4m) | 8s |
| Afternoon (21 Apr) | 1.5ft (0.4m) | 8s |
| Evening (21 Apr) | 1.5ft (0.5m) | 7s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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) (?) | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 4 | 7 | 7 | 7 | 8 | 4 | 5 | 5 | 5 | 5 | 7 | 4 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 15 | 20 | 20 | 19 | 18 | 19 | 18 | 18 | 40 | 27 | 44 | 16 | 9 | 9 | 9 | 35 | 45 | 48 | 28 | 13 | 8 | 5 | 4 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross | cross- off | cross | on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | off | off | off | off | cross- off | cross- off |
High Tide / height (m) | 2:39PM 2.55 | 2:54AM 2.94 | 3:33PM 2.46 | 3:49AM 2.84 | 4:31PM 2.36 | 4:48AM 2.72 | ||||||||||||||||||
Low Tide / height (m) | 9:06PM 0.04 | 9:53AM -0.27 | 10:03PM 0.15 | 10:53AM -0.14 | 11:07PM 0.27 | 11:59AM -0.02 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:48 | - | - |
| Sunset | 7:30 | - | - | - | - | - | - | - | 7:30 | - | - | - | - | - | - | - | 7:32 | - | - | - | - | - | - | - |
 |  | |  | |  | | | | | | | |  | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - |
| Temp. °C | 7 | 4 | 3 | 2 | 1 | 1 | 3 | 4 | 4 | 3 | 4 | 3 | 4 | 2 | 3 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 11 | 11 |
| Feels °C (?) | 0 | -3 | -3 | -3 | -4 | -4 | -2 | -3 | -3 | -4 | -4 | -3 | -2 | -3 | -2 | -2 | 0 | 2 | 3 | 3 | 2 | 1 | 6 | 3 |
- 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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