Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 pm 22 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
16.7°C
0.2° 

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 (23 Sep):

  • Morning surf: Morning surf (23 Sep, local time) - 6ft (1.8m), 7s period with E swell.
  • Afternoon surf: Afternoon surf (23 Sep, local time) - 6.5ft (2.0m), 8s period with E swell.
  • Evening surf: Evening surf (23 Sep, local time) - 6.5ft (2.0m), 8s period with E swell.

The current surf forecast for Plum Island at 4AM is: 1.5m 7s primary swell from a East direction and 0.1m 13s secondary swell from a East direction (forecast issued at 07:00pm September 22). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (23 Sep)6ft (1.8m)7s
Afternoon (23 Sep)6.5ft (2.0m)8s
Evening (23 Sep)6.5ft (2.0m)8s

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


Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Very mild (max 15°C on Fri afternoon, min 10°C on Thu morning). Winds increasing (light winds from the ENE on Tue night, strong winds from the NNE by Fri afternoon).

Tue
22
Wednesday
23
Thursday
24
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
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
E
7
1.2
E
7
1.1
E
7
1.3
E
7
1.5
E
7
1.7
E
7
1.8
E
7
2
E
7
2
E
8
2
E
8
2
E
8
1.9
ESE
9
1.8
ESE
9
1.9
ESE
9
2.3
ESE
10
2.4
ESE
10
2.4
ESE
10
2.5
ESE
11
2.5
ESE
11
Wave Graph
Metric surfscale
Energy kJ
167
124
107
154
204
248
294
431
482
526
576
547
528
646
939
1065
1153
1429
1518
Wind (km/h)
15
ENE
15
ENE
15
NE
20
NE
25
NE
25
NE
30
NE
25
ENE
25
ENE
15
ENE
20
NE
20
NE
25
NNE
25
NE
25
NE
25
NE
20
ENE
20
NE
20
NE
Wind State
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
9:25PM2.34m
9:57AM2.18m
10:11PM2.42m
10:38AM2.32m
10:54PM2.50m
Low Tide
3:57PM0.49m
4:30AM0.27m
4:42PM0.37m
5:10AM0.20m
5:23PM0.24m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:38
6:37
 mm
Temp °C
13
14
14
13
13
12
13
12
12
13
13
12
11
10
11
12
12
12
13
Feels °C
9
11
11
9
8
7
7
7
7
10
9
8
7
5
6
7
8
7
9
  • 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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