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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 1 pm Thursday 21 May 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
11.1° 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 8PM is: 0.3m 9s primary swell from a Southeast direction and 0.4m 4s secondary swell from a Northeast direction (forecast issued at 01:00pm May 21). The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 1.5ft (0.4m) | 9s |
| Afternoon (21 May) | 2ft (0.6m) | 5s |
| Evening (21 May) | 1ft (0.3m) | 9s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 15°C on Thu afternoon, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 9 | NE 5 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SSE 7 | SE 7 | |
28 | 20 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 5 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | glassy | glassy | glassy | cross-on | cross | cross-on | on | on | cross-on | cross | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross | cross-on | cross | cross-on | glassy | cross-on | |
High Tide | 4:21PM2.42m | 4:37AM2.73m | 5:24PM2.38m | 5:40AM2.57m | 6:29PM2.36m | 6:48AM2.43m | ||||||||||||||||||
Low Tide | 10:41AM-0.17m | 10:58PM0.24m | 11:43AM-0.06m | 00:05AM0.28m | 12:44PM0.03m | 1:12AM0.28m | ||||||||||||||||||
 | |  | |  |  |  |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — |
 | — | — | — | 8:04 | — | — | — | — | — | — | — | 8:05 | — | — | — | — | — | — | — | 8:06 | — | — | — | 8:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 15 | 15 | 15 | 14 | 11 | 11 | 11 | 12 | 13 | 12 | 13 | 14 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 11 | 11 |
11 | 12 | 12 | 12 | 12 | 6 | 6 | 7 | 7 | 8 | 6 | 8 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 7 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | NE 5 | NE 5 | NE 4 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SSE 3 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SSE 7 | SE 7 |
 kJ | 28 | 20 | 12 | 5 | 12 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 2 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 5 | 8 |
Swell 2 Height (m) Direction Period (s) | E 14 | SE 9 | SE 9 | SE 9 | ENE 4 | SE 6 | SE 5 | SE 5 | S 5 | E 13 | NE 4 | — | — | SE 10 | SSE 3 | — | — | E 13 | — | — | — | E 12 | SE 9 | SE 9 |
| kJ | 4 | 12 | 12 | 12 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | — | — | 15 | 1 | — | — | 3 | — | — | — | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | SE 6 | SE 6 | SE 6 | — | SE 13 | E 13 | E 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | E 13 | E 13 | E 13 | E 13 | — | — | E 13 | SE 12 | E 12 | E 12 |
| kJ | 4 | 4 | 1 | 1 | 1 | — | 7 | 3 | 3 | 7 | 7 | 7 | 7 | 7 | 4 | 4 | 4 | 3 | — | — | 3 | 6 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NE 4 | SE 6 | — | — | — | ENE 4 | NE 3 | NE 4 | NE 4 | NE 4 | — | SSE 2 | SSE 3 | — | — | — | — | — | — | — | — | ESE 2 | ESE 2 | ESE 2 |
| kJ | 16 | 1 | — | — | — | 1 | 4 | 8 | 7 | 5 | — | 1 | 3 | — | — | — | — | — | — | — | — | 1 | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 170 | 319 | 239 | 316 | 324 | 627 | 627 | 895 | 935 | 2736 | 2736 | 941 | 833 | 800 | 772 | 772 | 1276 | 1276 | 182 | 169 | 772 | 665 | 550 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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