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Surf Forecasts:

Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle16 Day Weather and Surf, issued 1 pm Saturday 14 Mar 2026 EDT
Forecast 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
3.7° C
 (Which is slightly warmer than usual)

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 Wednesday (Mar 18) at 2AM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.4m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Plum Island in the next 16 days are 3.5m 10s and forecast to arrive on Tuesday (Mar 17) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Mar 17) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 18th Mar)4ft (1.2m) 11s
Best Surf 2AM (Wed 18th Mar)4ft (1.2m) 11s
Most Powerful 2AM (Tue 17th Mar)11ft (3.5m) 10s

Table - best surf conditions forecast for Plum Island over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 39mm), heaviest during Mon afternoon. Icy conditions (max 15°C on Mon night, min -3°C on Sun morning). Winds increasing (light winds from the E on Sun morning, strong winds from the S by Mon night).

Days 3-6 Weather Summary Mostly dry. Icy conditions (max 3°C on Thu afternoon, min -5°C on Wed morning). Winds decreasing (fresh winds from the W on Tue afternoon, light winds from the W by Wed afternoon).

Sat
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
1
2
2
2
1
1
0
0
0
1
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SE
0.4
SE
0.2
ESE
0.2
E
1.2
SE
3
SE
2.5
SE
3.5
SSE
1.9
SE
1.6
SE
1.2
SE
1
SE
0.9
ESE
0.9
SE
0.9
SE
0.7
SE
0.7
SE
0.6
ESE
0.6
ESE
0.5
SE
0.5
ESE
Period(s) (?)7791057810101111101099988888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)321487708308972451701615319192164125120817245442936
Wind
(km/h)
30
W
30
WNW
10
E
20
SE
25
SE
30
SSE
30
SSE
45
S
30
W
35
W
25
W
20
WNW
5
W
15
S
15
S
20
SSE
5
SW
15
S
20
SSE
10
WSW
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		oncross-
on		cross-
on		crosscrosscross-
off		offoffoffoffoffcrosscrosscross-
on		cross-
off		crosscross-
on		cross-
off		cross
High Tide
/ height (m)
9:19PM
2.01
9:34AM
2.34
10:09PM
2.15
10:24AM
2.45
10:53PM
2.30
11:10AM
2.55
11:35PM
2.47
11:54AM
2.63
12:16AM
2.62
12:37PM
2.68
12:57AM
2.75
1:21PM
2.69
1:40AM
2.84
Low Tide
/ height (m)
3:59PM
0.34
4:09AM
0.50
4:44PM
0.25
4:55AM
0.37
5:25PM
0.14
5:37AM
0.21
6:03PM
0.03
6:18AM
0.05
6:40PM
-0.06
6:58AM
-0.10
7:17PM
-0.12
7:40AM
-0.22
7:55PM
-0.14
8:24AM
-0.29
Sat
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Sunrise--6:56--6:54--6:52--6:50--6:48--6:47--6:45
Sunset6:46--6:49--6:50--6:51--6:52--6:52--6:53--
clear
clear
part cloud
part cloud
part cloud
heavy rain
heavy rain
mod rain
part cloud
clear
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
Rain (mm)
-----111810-------------
Temp. °C63-1149121502-2-3121323556
Feels °C (?)-3-6-6-5-3378-8-8-12-11-4-3-5-3-4-3-112
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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.

View detailed surf forecast for Plum Island at:
surf-forecast.com

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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