Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.7°C
0.7° 

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 (08 Sep):

  • Morning surf: Morning surf (08 Sep, local time) - 1ft (0.3m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (08 Sep, local time) - 1ft (0.3m), 9s period with E swell.
  • Evening surf: Evening surf (08 Sep, local time) - 1ft (0.3m), 9s period with E swell.

The current surf forecast for Plum Island at 5AM is: 0.3m 9s primary swell from a East direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 01:00am September 08). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (08 Sep)1ft (0.3m)9s
Afternoon (08 Sep)1ft (0.3m)9s
Evening (08 Sep)1ft (0.3m)9s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 29°C on Thu afternoon, min 16°C on Thu night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
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)
0.3
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
0.3
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.9
SSE
4
1.3
SSE
5
1.2
SSE
5
1.2
S
5
1.3
S
5
0.2
ESE
10
0.2
ESE
9
0.2
ESE
9
0.7
S
5
0.5
S
6
0.3
SE
10
0.3
SE
10
Wave Graph
Metric surfscale
Energy kJ
14
14
14
14
14
15
15
15
6
6
6
7
26
83
84
73
87
9
9
9
23
17
14
15
Wind (km/h)
15
WNW
15
W
15
WNW
15
NNW
15
NNE
10
ESE
10
SSW
5
SW
5
E
5
ESE
10
SE
15
SE
15
SE
15
SSE
20
SSW
20
SSW
20
SW
25
SW
25
WSW
20
W
20
W
25
W
20
W
15
WNW
Wind State
off
off
off
cross-off
cross
cross-on
cross-off
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
High Tide
9:51AM2.33m
10:10PM2.74m
10:51AM2.45m
11:09PM2.78m
11:43AM2.56m
Low Tide
4:12AM-0.02m
4:27PM0.18m
5:08AM-0.11m
5:24PM0.05m
5:58AM-0.18m
6:17PM-0.06m
clear
cloud
cloud
cloud
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
part cloud
part cloud
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:04
7:01
 mm
1
2
Temp °C
21
20
20
21
21
22
19
19
18
18
17
19
22
24
23
22
22
21
21
25
29
28
25
22
Feels °C
18
18
17
18
19
20
18
19
19
19
17
18
21
23
22
21
21
19
20
24
26
25
22
19
  • 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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