Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 28 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
15.7°C
0.1° 

Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Plum Island today (28 Sep):

  • Morning surf: Morning surf (28 Sep, local time) - 10ft (3.0m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (28 Sep, local time) - 10ft (3.0m), 8s period with ENE swell.
  • Evening surf: Evening surf (28 Sep, local time) - 8ft (2.5m), 8s period with ENE swell.

The current surf forecast for Plum Island at 5AM is: 3.0m 8s primary swell from a East-northeast direction and 0.4m 8s secondary swell from a South-southeast direction, 0.6m 8s secondary swell from a South-southeast direction (forecast issued at 01:00am September 28). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (28 Sep)10ft (3.0m)8s
Afternoon (28 Sep)10ft (3.0m)8s
Evening (28 Sep)8ft (2.5m)8s

Table - waves today at Plum Island. (Swell directed towards the surf break)


Short Range Forecast

Heavy rain (total 22mm), heaviest during Mon afternoon. Warm (max 20°C on Wed afternoon, min 12°C on Mon morning). Winds decreasing (strong winds from the NE on Mon morning, calm by Tue night).

Monday
28
Tuesday
29
Wednesday
30
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
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
2
2
1
0
0
1
1
1
1
1
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.2
ENE
8
1.5
E
8
1.7
ENE
8
1.2
E
8
1
E
8
1
E
9
1
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
8
0.9
E
9
Wave Graph
Metric surfscale
Energy kJ
1068
1074
1237
1155
1041
867
764
618
289
381
196
142
145
146
119
119
125
125
125
120
117
117
115
117
Wind (km/h)
40
NE
40
NE
40
NE
40
NE
40
NE
35
NE
30
NNE
30
NNE
25
N
20
NNW
15
NNW
15
NNW
10
NNW
5
NNE
5
NE
5
NNW
5
NNE
5
WNW
5
SSW
5
SSE
10
SE
15
SSE
10
S
10
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-off
glassy
off
glassy
glassy
cross-on
cross-on
cross
cross-off
High Tide
00:58AM2.62m
1:15PM2.79m
1:42AM2.59m
1:58PM2.84m
2:28AM2.54m
2:44PM2.84m
Low Tide
7:32AM-0.01m
8:00PM-0.19m
8:10AM0.02m
8:45PM-0.20m
8:53AM0.08m
9:34PM-0.15m
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
6:35
—
—
—
—
—
—
—
6:37
—
—
—
—
—
—
—
6:37
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
6:30
—
—
—
—
—
—
—
6:28
—
—
—
—
—
—
—
6:27
—
—
 mm
1
1
1
2
5
5
2
2
3
2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
13
13
12
13
12
12
12
12
12
12
12
14
16
16
16
15
15
15
15
17
19
20
18
18
Feels °C
6
6
5
6
5
5
6
7
8
9
9
12
15
16
16
15
15
15
15
17
18
19
17
18
  • 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
How to use the Wavefinder 

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.


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