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Surf Forecasts:

Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle12 Day Weather and Surf, issued 1 am Thursday 18 Sep 2025 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
16.5° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Plum Island this week:

The surf forecast for Plum Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 5AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Plum Island in the next 12 days are 1.1m 9s and forecast to arrive on Tuesday (Sep 23) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Sep 23) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 18th Sep)2.5ft (0.8m) 8s
Best Surf 5AM (Thu 18th Sep)2.5ft (0.8m) 8s
Most Powerful 8PM (Tue 23rd Sep)3.5ft (1.1m) 9s

Table - best surf conditions forecast for Plum Island over the next 12 days.

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

Short Range Forecast Mostly dry. Warm (max 22°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Warm (max 29°C on Tue afternoon, min 11°C on Sun morning). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SE
0.8
SE
0.8
SE
0.6
SE
0.6
ESE
1.3
NNE
0.4
SE
0.4
ESE
0.5
SE
0.3
ESE
0.5
SE
0.7
SE
0.7
SE
0.7
SE
0.8
SE
0.9
SE
1
SE
0.9
SE
0.8
SE
0.6
SE
0.6
ESE
Period(s) (?)787775787131211111010999898
Wave
Graph
(?)Metric surfscale
Energy kJ (?)3671643831832024263573133119112115138149123846245
Wind
(km/h)
0
SE
10
SE
15
W
15
NW
5
N
15
NNE
10
ENE
20
SSE
5
NW
10
ENE
15
SSE
5
SW
10
SSE
15
SSE
15
SW
10
W
5
E
10
NNE
20
NE
15
ENE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on		offcross-
off		glasscrossoncross-
on		cross-
off		oncross-
on		cross-
off		cross-
on		cross-
on		cross-
off		offoncrosscross-
on		cross-
on		on
High Tide
/ height (m)
9:59AM
2.24
10:14PM
2.58
10:54AM
2.33
11:08PM
2.60
11:39AM
2.41
11:54PM
2.59
12:18PM
2.45
12:34AM
2.54
12:52PM
2.47
1:11AM
2.47
1:25PM
2.46
1:47AM
2.39
1:58PM
2.44
2:23AM
2.30
Low Tide
/ height (m)
4:22PM
0.23
4:59AM
-0.01
5:16PM
0.14
5:47AM
-0.04
6:04PM
0.06
6:31AM
-0.04
6:49PM
0.00
7:12AM
-0.01
7:31PM
-0.02
7:52AM
0.05
8:12PM
-0.02
8:29AM
0.15
8:52PM
0.03
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise6:24--6:26--6:26--6:28--6:28--6:31--6:31--
Sunset-6:47--6:45--6:45--6:43--6:40--6:38--6:37-
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
part cloud
Rain (mm)
-----------------2---
Temp. °C192220222219141514131615151816252926171616
Feels °C (?)212120202117101011111312131513243026161316
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Massachusetts

  1. weather stationWind Update Continuing clean conditions at Plum Island (calm at Ipswich 12 km from Plum Island). 0.6m 7s swell from the SE to make surfable waves.

    1 hour 15 minutes ago Plum Island
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1 h 15 min ago

0 km/h
NNW
Clean
Please reload the page to see if there are any updates.

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.

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 12 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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