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Plum Island Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Plum Island surfForecast / Massachusetts / USA
16 Day 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)Best Forecast Surf Conditions for Plum Island this week:
The surf forecast for Plum Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 25) at 8AM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Plum Island in the next 16 days are 2.1m 8s and forecast to arrive on Monday (May 25) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (May 26) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 25th May) | 5.5ft (1.7m) 8s |
| Best Surf | 8AM (Mon 25th May) | 5.5ft (1.7m) 8s |
| Most Powerful | 2AM (Mon 25th May) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Plum Island over the next 16 days.
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. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Sun night. Warm (max 24°C on Wed morning, min 8°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 7 | SE 5 | SE 8 | SE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | SE 7 | SE 7 | SE 7 | E 5 | ENE 7 | |
12 | 13 | 13 | 15 | 15 | 15 | 14 | 14 | 32 | 64 | 512 | 275 | 193 | 129 | 98 | 82 | 43 | 17 | 16 | 63 | 189 | |
Wind (km/h) | |||||||||||||||||||||
glassy | cross-on | on | cross-on | glassy | cross-on | cross | cross-on | cross-on | cross-on | on | off | cross-off | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | |
High Tide | 4:21PM2.42m | 4:37AM2.73m | 5:24PM2.38m | 5:40AM2.57m | 6:29PM2.36m | 6:48AM2.43m | 7:35PM2.36m | 7:57AM2.33m | 8:36PM2.39m | 9:03AM2.26m | 9:31PM2.41m | 10:02AM2.21m | 10:18PM2.44m | 10:53AM2.19m | |||||||
Low Tide | 10:58PM0.24m | 11:43AM-0.06m | 00:05AM0.28m | 12:44PM0.03m | 1:12AM0.28m | 1:44PM0.09m | 2:16AM0.24m | 2:42PM0.13m | 3:15AM0.16m | 3:36PM0.16m | 4:10AM0.08m | 4:26PM0.18m | 5:00AM0.01m | ||||||||
 |  |  | | |  | |  | |  |  | | | | | |  | |  |  | | |
 | — | — | 5:13 | — | — | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:09 | — | — | 5:09 |
 | 8:04 | — | — | 8:05 | — | — | 8:06 | — | — | 8:07 | — | — | 8:07 | — | — | 8:08 | — | — | 8:09 | — | 8:10 |
— | — | — | — | — | — | — | — | — | 3 | 12 | — | — | — | — | — | — | — | 6 | 1 | — | |
Temp °C | 15 | 15 | 12 | 13 | 14 | 14 | 14 | 13 | 11 | 9 | 11 | 12 | 22 | 21 | 16 | 19 | 17 | 24 | 17 | 17 | 13 |
12 | 12 | 7 | 8 | 10 | 10 | 10 | 9 | 7 | 5 | 9 | 10 | 21 | 20 | 15 | 17 | 15 | 23 | 18 | 17 | 9 | |
Swell 1 Height (m) Direction Period (s) | NE 5 | SE 9 | SE 9 | SE 10 | SSE 3 | SE 10 | SE 10 | SE 9 | SE 9 | E 12 | E 18 | SE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | SE 7 | SE 7 | SE 7 | E 13 | SSE 8 |
 kJ | 12 | 13 | 13 | 15 | 2 | 15 | 14 | 14 | 3 | 3 | 6 | 275 | 193 | 129 | 98 | 82 | 43 | 17 | 16 | 4 | 6 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 6 | S 5 | NE 4 | SE 10 | — | — | E 12 | SE 12 | E 18 | — | E 16 | E 16 | E 16 | E 15 | E 15 | SSE 4 | WSW 3 | E 14 | E 14 | — |
| kJ | 12 | 1 | 1 | 2 | 15 | — | — | 3 | 6 | 6 | — | 5 | 5 | 5 | 4 | 4 | 5 | 1 | 4 | 4 | — |
Swell 3 Height (m) Direction Period (s) | SE 6 | — | E 13 | SE 13 | SE 13 | E 13 | — | SE 12 | E 18 | — | — | — | — | — | S 15 | — | E 15 | E 15 | E 14 | — | — |
| kJ | 1 | — | 3 | 7 | 7 | 4 | — | 6 | 6 | — | — | — | — | — | 4 | — | 4 | 4 | 4 | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 4 | NE 4 | — | — | — | — | ESE 2 | SE 7 | SE 5 | SE 8 | — | — | — | N 3 | — | WSW 3 | WNW 3 | — | E 5 | ENE 7 |
| kJ | — | 1 | 7 | — | — | — | — | 1 | 32 | 64 | 512 | — | — | — | 1 | — | 4 | 2 | — | 63 | 189 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 319 | 324 | 627 | 2736 | 833 | 772 | 1276 | 772 | 484 | 404 | 52 | 0 | 0 | 13 | 169 | 182 | 4 | 789 | 595 | 13 | 221 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Plum Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Plum Island Surf forecast
The above surf forecast table for Plum Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Plum Island can be found by selecting the local surf guide option on the grey menu. Our Plum Island surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Plum Island) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Plum Island may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Plum Island is 6 km (4 miles) from Newburyport. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Newburyport. Newburyport has rooms for a wide range of budgets as well as car hire and transport links.
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