Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.8°C
0.6° 

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 (04 Sep):

  • Morning surf: Morning surf (04 Sep, local time) - 2.5ft (0.7m), 7s period with ESE swell.
  • Afternoon surf: Afternoon surf (04 Sep, local time) - 2.5ft (0.7m), 7s period with ESE swell.
  • Evening surf: Evening surf (04 Sep, local time) - 2.5ft (0.7m), 7s period with ESE swell.

The current surf forecast for Plum Island at 1AM is: 0.8m 6s primary swell from a East-southeast direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 07:00pm September 03). The wind direction is predicted to be glassy.

Time (EDT) & DateWave HeightWave Period
Morning (04 Sep)2.5ft (0.7m)7s
Afternoon (04 Sep)2.5ft (0.7m)7s
Evening (04 Sep)2.5ft (0.7m)7s

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


Short Range Forecast

Some drizzle, heaviest during Thu night. Warm (max 24°C on Fri afternoon, min 14°C on Sun morning). Wind will be generally light.

Thu
3
Friday
4
Saturday
5
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
1
1
0
1
0
0
1
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
Wave
Height (m)
Direction
Period (s)
0.4
SE
9
0.7
SE
6
0.8
ESE
6
0.8
ESE
6
0.8
ESE
6
0.7
ESE
7
0.8
ESE
7
0.7
ESE
7
0.7
ESE
7
0.8
ESE
7
0.6
ESE
7
0.6
ESE
7
0.6
ESE
7
0.6
ESE
7
0.6
E
7
0.6
E
7
1
ENE
7
1
ENE
7
1.1
E
7
Wave Graph
Metric surfscale
Energy kJ
28
31
40
44
48
45
53
48
48
53
35
37
40
40
34
34
85
93
110
Wind (km/h)
10
NNE
10
ENE
5
NE
0
ENE
5
WSW
5
WSW
5
SW
10
ESE
10
ENE
5
WNW
15
WNW
15
NW
15
N
15
N
15
NE
15
ENE
20
NE
15
NNE
15
N
Wind State
cross
on
cross-on
glassy
glassy
glassy
glassy
cross-on
cross-on
glassy
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
High Tide
4:49PM2.69m
5:24AM2.28m
5:46PM2.65m
6:26AM2.21m
6:49PM2.63m
Low Tide
11:46PM0.06m
11:54AM0.32m
00:54AM0.11m
1:03PM0.38m
part cloud
part cloud
rain showers
cloud
cloud
clear
clear
cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:13
7:10
 mm
1
Temp °C
20
18
17
17
18
18
23
24
21
21
20
17
16
17
19
19
17
17
16
Feels °C
21
19
18
19
20
20
25
24
22
22
18
15
14
16
17
18
14
15
14
  • 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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