Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.6°C
0.8° 

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 (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 2.5ft (0.8m), 6s period with SSE swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 0.5ft (0.2m), 10s period with ESE swell.
  • Evening surf: Evening surf (10 Sep, local time) - 1ft (0.3m), 10s period with SE swell.

The current surf forecast for Plum Island at 8AM is: 0.9m 6s primary swell from a South-southeast direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 01:00am September 10). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (10 Sep)2.5ft (0.8m)6s
Afternoon (10 Sep)0.5ft (0.2m)10s
Evening (10 Sep)1ft (0.3m)10s

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


Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 29°C on Thu afternoon, min 14°C on Sat morning). Wind will be generally light.

Thursday
10
Friday
11
Saturday
12
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
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
0
0
0
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)
0.2
ESE
10
0.2
ESE
10
0.9
SSE
6
0.7
S
6
0.2
ESE
10
0.4
SE
7
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.3
SE
10
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
1
S
4
0.9
S
4
Wave Graph
Metric surfscale
Energy kJ
9
9
56
35
9
13
14
14
15
24
15
15
15
17
18
18
18
17
9
9
9
9
36
31
Wind (km/h)
25
SW
30
SW
25
WSW
25
W
25
W
20
W
20
W
15
W
15
W
15
NW
20
NW
20
NW
20
NW
15
NW
10
NW
10
NW
10
NNW
5
NW
5
W
0
SSE
15
SSE
20
SSE
20
S
15
SSW
Wind State
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
glassy
cross-on
cross
cross
cross-off
High Tide
11:09PM2.78m
11:43AM2.56m
00:02AM2.77m
12:30PM2.63m
00:50AM2.72m
1:14PM2.65m
Low Tide
5:58AM-0.18m
6:17PM-0.06m
6:46AM-0.20m
7:06PM-0.14m
7:32AM-0.18m
7:54PM-0.17m
light rain
light rain
clear
clear
clear
clear
clear
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:01
7:00
6:59
 mm
1
3
Temp °C
23
21
21
27
29
29
25
21
19
18
16
19
22
23
21
19
16
15
14
19
21
21
21
19
Feels °C
21
19
20
24
24
26
22
18
17
15
12
14
17
18
18
16
14
13
12
18
17
17
18
18
  • 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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