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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 Friday 20 Mar 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
3.4° C
(Which is normal for this time of year)How big are the waves at Plum Island today?
The current surf forecast for Plum Island at 1AM is: 1.3m 6s primary swell from a South direction and 0.7m 9s secondary swell from a East-southeast direction, 0.8m 9s secondary swell from a East-southeast direction (forecast issued at 07:00pm March 20). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 3.5ft (1.0m) | 8s |
| Afternoon (21 Mar) | 2.5ft (0.8m) | 8s |
| Evening (21 Mar) | 2.5ft (0.7m) | 8s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 20 | Saturday 21 | Sunday 22 | Monday 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) (?) | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 5 | 6 | 7 | 7 | 7 | 7 | 6 | 6 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 93 | 121 | 139 | 152 | 118 | 143 | 112 | 80 | 63 | 63 | 39 | 42 | 44 | 45 | 43 | 149 | 196 | 147 | 115 | 86 | 79 | 138 | 223 | 284 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | cross | cross- off | cross | cross- off | glass | cross- on | glass | cross- on | cross- on | cross- on | cross | cross- off | cross | cross | cross- on | cross | cross | cross | cross- on |
High Tide / height (m) | 1:40AM 2.84 | 2:07PM 2.65 | 2:25AM 2.87 | 2:55PM 2.58 | 3:13AM 2.86 | |||||||||||||||||||
Low Tide / height (m) | 7:55PM -0.14 | 8:24AM -0.29 | 8:36PM -0.11 | 9:11AM -0.29 | 9:22PM -0.03 | 10:04AM -0.23 | ||||||||||||||||||
Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:41 | - | - |
| Sunset | 6:53 | - | - | - | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - |
 |  | |  | | |  | |  | | | | |  |  | | | |  | | | | | | |
Rain (mm) | - | 2 | 4 | - | - | - | - | - | - | - | - | - | - | - | 4 | 2 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 9 | 7 | 6 | 6 | 6 | 3 | 6 | 7 | 7 | 5 | 4 | 2 | 3 | 2 | 4 | 6 | 4 | 1 | 1 | 1 | 0 | -1 | 0 | 1 |
| Feels °C (?) | 1 | 2 | 1 | 2 | 4 | -2 | 2 | 3 | 3 | 2 | 0 | -1 | -1 | -4 | -2 | 2 | -1 | -5 | -7 | -7 | -8 | -9 | -8 | -6 |
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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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