Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
16.8°C
0.0° 

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 (19 Sep):

  • Morning surf: Morning surf (19 Sep, local time) - 3.5ft (1.1m), 5s period with NE swell.
  • Afternoon surf: Afternoon surf (19 Sep, local time) - 2.5ft (0.8m), 5s period with NE swell.
  • Evening surf: Evening surf (19 Sep, local time) - 1.5ft (0.4m), 8s period with ESE swell.

The current surf forecast for Plum Island at 8AM is: 1.1m 5s primary swell from a Northeast direction and 0.4m 8s secondary swell from a East-southeast direction, 0.2m 12s secondary swell from a East-southeast direction (forecast issued at 01:00am September 19). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (19 Sep)3.5ft (1.1m)5s
Afternoon (19 Sep)2.5ft (0.8m)5s
Evening (19 Sep)1.5ft (0.4m)8s

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


Short Range Forecast

Heavy rain (total 20mm), heaviest during Sun night. Very mild (max 16°C on Mon afternoon, min 12°C on Sat morning). Wind will be generally light.

Saturday
19
Sunday
20
Monday
21
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.9
NNE
4
1.4
NE
5
1.1
NE
5
1
NE
5
0.9
NE
6
0.7
NE
5
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
SE
8
0.3
ESE
11
0.3
ESE
11
0.4
SE
11
0.4
SE
11
0.4
ESE
8
0.3
ESE
8
0.4
ESE
8
1
NE
4
1
NE
4
0.9
ENE
4
0.8
ENE
5
0.4
SE
9
0.4
SE
9
Wave Graph
Metric surfscale
Energy kJ
31
111
69
52
44
29
23
23
23
23
16
23
22
29
29
28
14
27
34
37
35
24
22
29
Wind (km/h)
15
NNE
15
NNE
20
NNE
15
NE
10
ESE
15
SE
15
SSE
10
S
10
SSW
10
SW
5
SSW
20
SSE
10
SSE
15
ESE
15
ESE
10
E
25
NNE
20
NNE
20
NNE
20
NNE
15
ENE
10
ESE
5
ESE
15
NE
Wind State
cross
cross
cross
cross-on
on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
on
on
cross-on
cross
cross
cross-on
cross-on
on
cross-on
cross-on
High Tide
6:18AM1.92m
6:35PM2.19m
7:19AM1.91m
7:35PM2.21m
8:18AM1.96m
8:32PM2.26m
Low Tide
1:01AM0.36m
1:15PM0.61m
1:59AM0.40m
2:14PM0.62m
2:55AM0.39m
3:08PM0.58m
part cloud
clear
part cloud
clear
cloud
clear
clear
clear
clear
clear
part cloud
cloud
cloud
light rain
light rain
light rain
mod rain
light rain
cloud
clear
clear
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:43
 mm
4
3
5
6
2
Temp °C
15
13
12
13
14
14
14
14
13
13
12
15
15
12
13
14
12
12
12
14
15
16
16
15
Feels °C
11
8
7
9
11
10
10
11
10
11
10
11
13
9
11
13
7
8
8
10
12
14
15
12
  • 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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