Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 pm 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
19.2°C
0.4° 

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 (28 Aug):

  • Morning surf: Morning surf (28 Aug, local time) - 2ft (0.6m), 8s period with SE swell.
  • Afternoon surf: Afternoon surf (28 Aug, local time) - 2ft (0.6m), 8s period with SE swell.
  • Evening surf: Evening surf (28 Aug, local time) - 2.5ft (0.8m), 8s period with SE swell.

The current surf forecast for Plum Island at 5PM is: 0.7m 8s primary swell from a Southeast direction and 0.1m 10s secondary swell from a East direction, 0.4m 3s secondary swell from a South-southeast direction (forecast issued at 01:00pm August 28). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (28 Aug)2ft (0.6m)8s
Afternoon (28 Aug)2ft (0.6m)8s
Evening (28 Aug)2.5ft (0.8m)8s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 29°C on Sun afternoon, min 14°C on Sat morning). Wind will be generally light.

Fri
28
Saturday
29
Sunday
30
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)
1
0
1
1
0
0
1
0
1
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
Wave
Height (m)
Direction
Period (s)
0.6
SE
8
0.6
SE
8
0.7
SE
8
0.8
SE
8
0.7
SE
8
0.6
SE
8
0.6
SE
8
0.6
SE
8
0.7
SE
7
0.7
SE
7
0.6
SE
7
0.5
SE
7
0.4
SE
7
0.4
SE
8
0.4
SE
8
0.3
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.3
SE
8
0.5
SSE
5
Wave Graph
Metric surfscale
Energy kJ
55
54
67
75
62
49
49
46
56
50
33
27
17
21
23
11
23
24
18
11
15
Wind (km/h)
5
SW
10
SE
10
SSW
10
W
20
NW
15
NW
10
NNW
10
NW
0
ENE
10
SE
20
SSE
15
S
10
SW
10
W
15
WSW
15
SW
15
SW
15
WSW
25
WSW
15
W
15
WSW
Wind State
glassy
cross-on
cross-off
off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
High Tide
12:32PM2.42m
00:46AM2.61m
1:09PM2.52m
1:25AM2.62m
1:47PM2.61m
Low Tide
7:13PM0.16m
7:36AM0.03m
7:50PM0.08m
8:09AM0.02m
8:27PM0.02m
cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:24
7:22
7:21
 mm
1
2
Temp °C
25
26
26
25
20
17
15
14
18
21
21
19
19
20
20
20
25
29
27
25
23
Feels °C
28
27
27
25
18
15
13
12
18
19
18
17
18
17
17
17
22
26
24
24
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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