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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 Wednesday 20 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
10.0° 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 9PM is: 0.5m 9s primary swell from a Southeast direction and 0.1m 12s secondary swell from a East direction (forecast issued at 01:00pm May 20). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 1.5ft (0.4m) | 8s |
| Afternoon (20 May) | 1.5ft (0.4m) | 9s |
| Evening (20 May) | 1.5ft (0.5m) | 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. Warm (max 30°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | 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 | |
27 | 28 | 29 | 41 | 21 | 29 | 29 | 28 | 28 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross | cross-off | glassy | cross | cross | cross | on | cross-on | cross | cross | cross-off | cross-off | off | glassy | |
High Tide | 3:22PM2.48m | 3:37AM2.87m | 4:21PM2.42m | 4:37AM2.73m | 5:24PM2.38m | 5:40AM2.57m | ||||||||||||||||||
Low Tide | 9:42AM-0.28m | 9:54PM0.16m | 10:41AM-0.17m | 10:58PM0.24m | 11:43AM-0.06m | 00:05AM0.28m | ||||||||||||||||||
 |  | | |  | |  |  | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — |
 | — | — | — | 8:02 | — | — | — | — | — | — | — | 8:04 | — | — | — | — | — | — | — | 8:05 | — | — | — | 8:06 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 29 | 30 | 29 | 25 | 20 | 16 | 14 | 13 | 12 | 13 | 15 | 14 | 13 | 11 | 11 | 11 | 13 | 15 | 15 | 15 | 14 | 13 | 13 | 13 |
27 | 28 | 27 | 23 | 17 | 12 | 10 | 10 | 9 | 11 | 11 | 10 | 11 | 6 | 7 | 7 | 9 | 10 | 9 | 9 | 9 | 10 | 11 | 11 | |
Swell 1 Height (m) Direction Period (s) | S 5 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | NE 4 | NE 4 | SE 9 | SE 9 | SSE 3 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SSW 3 | SE 10 | SE 10 |
 kJ | 11 | 28 | 29 | 41 | 21 | 29 | 29 | 28 | 28 | 12 | 4 | 12 | 13 | 2 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 4 | 15 | 15 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SSE 5 | SSE 5 | E 12 | SSE 6 | E 14 | NNE 4 | E 14 | E 14 | SE 9 | SE 9 | NE 4 | — | SE 9 | SSE 3 | SE 5 | NE 3 | NNE 3 | — | SE 13 | SE 13 | SE 10 | S 3 | S 3 |
| kJ | 27 | 10 | 5 | 3 | 6 | 4 | 4 | 4 | 4 | 12 | 12 | 2 | — | 13 | 1 | 1 | 2 | 1 | — | 7 | 7 | 15 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | E 12 | E 14 | WSW 4 | — | — | — | E 15 | E 14 | E 14 | NE 5 | S 6 | S 5 | SE 13 | E 13 | E 13 | E 13 | SE 13 | — | — | SE 13 | E 13 | E 13 |
| kJ | 6 | 6 | 3 | 4 | 1 | — | — | — | 4 | 4 | 4 | 1 | 1 | 1 | 7 | 3 | 3 | 3 | 7 | — | — | 7 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | WSW 3 | WSW 3 | W 3 | W 3 | NW 3 | NNW 3 | N 4 | NE 5 | NE 5 | SE 6 | SSE 3 | SSE 3 | SSE 3 | — | NE 3 | NE 3 | NNE 3 | — | — | S 3 | SSW 3 | SSW 3 | — | — |
| kJ | 3 | 3 | 5 | 5 | 5 | 4 | 15 | 10 | 21 | 1 | 2 | 3 | 3 | — | 2 | 3 | 2 | — | — | 2 | 6 | 5 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 377 | 54 | 351 | 118 | 120 | 146 | 169 | 169 | 170 | 272 | 319 | 626 | 231 | 319 | 260 | 895 | 863 | 863 | 854 | 868 | 855 | 635 | 772 | 772 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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