Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
19.4°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 (26 Aug):

  • Morning surf: Morning surf (26 Aug, local time) - 1.5ft (0.5m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (26 Aug, local time) - 2.5ft (0.7m), 8s period with SE swell.
  • Evening surf: Evening surf (26 Aug, local time) - 3ft (0.9m), 9s period with ESE swell.

The current surf forecast for Plum Island at 3PM is: 0.7m 8s primary swell from a Southeast direction and 0.1m 13s secondary swell from a East direction (forecast issued at 07:00am August 26). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (26 Aug)1.5ft (0.5m)9s
Afternoon (26 Aug)2.5ft (0.7m)8s
Evening (26 Aug)3ft (0.9m)9s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Fri afternoon. Warm (max 27°C on Thu afternoon, min 17°C on Wed morning). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
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
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
1
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)
0.4
SE
11
0.4
SE
9
0.6
ESE
9
0.7
SE
8
0.7
SE
8
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
0.8
ESE
8
0.8
ESE
8
1.1
SE
8
0.7
SE
9
0.7
SE
9
0.7
SE
8
0.7
SE
8
0.7
SE
8
0.6
SE
8
0.6
SE
8
0.6
SE
8
0.6
ESE
8
0.6
ESE
8
0.6
SE
8
Wave Graph
Metric surfscale
Energy kJ
29
22
52
74
69
130
124
116
113
92
92
160
75
75
74
72
70
55
55
54
44
44
50
Wind (km/h)
10
NW
10
NW
5
NNE
15
ESE
15
SE
15
SSE
15
S
10
SW
10
SW
10
SSW
15
S
20
SSE
25
S
20
S
15
SSW
15
SSW
15
S
15
SSW
10
SSW
10
S
5
WSW
5
WNW
15
NW
Wind State
cross-off
cross-off
glassy
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
off
cross-off
High Tide
11:21AM2.19m
11:29PM2.52m
11:57AM2.31m
00:08AM2.58m
12:32PM2.42m
Low Tide
5:50AM0.16m
5:57PM0.33m
6:28AM0.10m
6:36PM0.24m
7:03AM0.06m
7:13PM0.16m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
clear
cloud
cloud
clear
part cloud
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:01
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:28
7:25
7:24
 mm
2
3
2
4
1
Temp °C
18
17
22
22
23
22
22
21
20
20
26
27
27
24
23
22
21
21
24
26
26
25
22
Feels °C
17
16
23
20
21
21
22
21
19
20
25
24
24
23
23
23
22
23
26
27
29
27
21
  • 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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