Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
22.1° C
2.3° 

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 (11 Aug):

  • Morning surf: Morning surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with SE swell.
  • Evening surf: Evening surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with SE swell.

The current surf forecast for Plum Island at 5PM is: 0.1m 9s primary swell from a Southeast direction and 0.1m 6s secondary swell from a South direction (forecast issued at 01:00pm August 11). An open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (11 Aug)0.5ft (0.1m)9s
Afternoon (11 Aug)0.5ft (0.1m)9s
Evening (11 Aug)0.5ft (0.1m)9s

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


Short Range Forecast

Mostly dry. Warm (max 30°C on Tue afternoon, min 19°C on Wed night). Wind will be generally light.

Tue
11
Wednesday
12
Thursday
13
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
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)
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
E
14
0.1
SE
9
0.1
E
15
0.1
SE
8
0.1
E
14
0.1
E
14
0.1
E
14
0.1
E
14
0.1
SE
14
0.1
SE
14
0.2
ESE
8
0.1
SE
14
0.1
E
14
0.1
E
14
0.1
SE
10
0.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
3
3
3
3
3
4
3
4
3
4
4
4
4
8
8
8
8
4
4
4
9
Wind (km/h)
15
WNW
10
NW
10
NW
10
NW
10
WNW
10
NW
10
WNW
10
NW
5
NE
15
SE
10
S
10
SSW
10
SW
10
WNW
10
NW
10
WNW
10
WNW
0
S
5
SE
5
WSW
5
W
Wind State
off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
cross-off
cross-off
cross-off
off
cross-off
glassy
cross-on
glassy
off
High Tide
10:59AM2.40m
11:17PM2.90m
11:57AM2.50m
00:13AM2.92m
12:49PM2.58m
Low Tide
5:32PM0.11m
6:16AM-0.24m
6:28PM0.01m
7:07AM-0.28m
7:21PM-0.06m
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
cloud
cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:45
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:51
7:50
7:47
 mm
Temp °C
27
30
30
25
23
21
20
21
24
25
24
23
23
21
19
20
26
27
25
25
23
Feels °C
25
29
29
24
22
20
19
20
23
23
23
22
22
20
18
19
25
28
25
25
23
  • 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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