Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
19.6°C
1.6° 

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 (06 Sep):

  • Morning surf: Morning surf (06 Sep, local time) - 4.5ft (1.3m), 7s period with ENE swell.
  • Afternoon surf: Afternoon surf (06 Sep, local time) - 3.5ft (1.1m), 7s period with ENE swell.
  • Evening surf: Evening surf (06 Sep, local time) - 2.5ft (0.8m), 7s period with ENE swell.

The current surf forecast for Plum Island at 4AM is: 1.1m 6s primary swell from a East-northeast direction (forecast issued at 01:00am September 06). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (06 Sep)4.5ft (1.3m)7s
Afternoon (06 Sep)3.5ft (1.1m)7s
Evening (06 Sep)2.5ft (0.8m)7s

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


Short Range Forecast

Mostly dry. Warm (max 25°C on Mon afternoon, min 14°C on Sun morning). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
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
1
1
0
1
1
1
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)
1
ENE
7
1.3
ENE
6
1.4
ENE
7
1.3
ENE
7
1.1
ENE
7
1
ENE
7
0.9
ENE
7
0.5
E
10
0.7
ENE
10
0.5
E
10
0.4
ENE
10
0.4
E
9
0.4
ENE
9
0.4
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.2
E
9
0.2
E
9
0.2
E
9
Wave Graph
Metric surfscale
Energy kJ
96
129
178
158
128
105
68
45
96
48
31
28
28
26
15
14
14
14
14
14
14
6
6
6
Wind (km/h)
15
NE
15
NNE
15
NNE
10
N
5
NW
5
WSW
10
SSE
10
W
15
W
15
WNW
15
NW
10
NNW
10
NNW
5
NW
15
NW
10
NW
15
WNW
15
W
15
WNW
15
NW
10
ESE
15
ESE
15
SSE
5
S
Wind State
cross-on
cross
cross
cross
glassy
glassy
cross-on
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
on
cross-on
cross
glassy
High Tide
7:34AM2.19m
7:57PM2.64m
8:44AM2.23m
9:05PM2.68m
9:51AM2.33m
10:10PM2.74m
Low Tide
2:04AM0.11m
2:16PM0.38m
3:11AM0.06m
3:25PM0.30m
4:12AM-0.02m
4:27PM0.18m
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:07
7:06
 mm
Temp °C
16
15
14
14
18
21
19
18
16
15
15
21
24
25
24
22
21
19
19
23
23
22
20
19
Feels °C
13
13
12
13
17
20
17
16
13
12
12
18
21
23
21
20
18
16
16
20
22
20
19
20
  • 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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