Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
19.4°C
0.3° 

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 (25 Aug):

  • Afternoon surf: Afternoon surf (25 Aug, local time) - 2.5ft (0.7m), 6s period with SE swell.
  • Evening surf: Evening surf (25 Aug, local time) - 1.5ft (0.4m), 11s period with SE swell.

The current surf forecast for Plum Island at 12AM is: 0.4m 11s primary swell from a Southeast direction and 0.3m 6s secondary swell from a East direction, 0.8m 5s secondary swell from a South-southeast direction (forecast issued at 07:00pm August 24). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (25 Aug)--
Afternoon (25 Aug)2.5ft (0.7m)6s
Evening (25 Aug)1.5ft (0.4m)11s

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


Short Range Forecast

Mostly dry. Warm (max 27°C on Thu afternoon, min 17°C on Tue night). Wind will be generally light.

Mon
24
Tuesday
25
Wednesday
26
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)
1
0
1
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)
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.3
ESE
11
0.4
SE
11
0.6
SE
6
0.3
ESE
11
0.4
SE
11
0.3
SE
11
0.3
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
9
0.6
ESE
9
0.5
SE
9
0.7
SE
8
0.9
ESE
9
0.9
ESE
9
Wave Graph
Metric surfscale
Energy kJ
32
31
30
23
30
25
22
29
20
19
29
29
29
22
50
41
69
139
130
Wind (km/h)
15
WSW
10
SW
10
SW
10
W
10
W
15
W
10
WSW
15
W
15
WNW
10
W
15
WNW
15
WNW
10
NW
10
NW
5
NNE
10
ESE
20
SE
15
SSE
10
SSW
Wind State
cross-off
cross-off
cross-off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
glassy
cross-on
cross-on
cross-on
cross-off
High Tide
10:05PM2.36m
10:42AM2.08m
10:49PM2.44m
11:21AM2.19m
Low Tide
4:32PM0.47m
5:08AM0.21m
5:16PM0.40m
5:50AM0.16m
5:57PM0.33m
part cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
clear
clear
clear
clear
clear
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:30
7:30
7:28
 mm
Temp °C
27
24
22
20
18
18
23
24
24
23
21
18
17
17
21
22
23
22
22
Feels °C
24
23
21
19
16
16
21
22
21
21
19
16
16
16
21
21
21
21
22
  • 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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