Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
19.1°C
0.7° 

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 (01 Sep):

  • Morning surf: Morning surf (01 Sep, local time) - 1ft (0.3m), 8s period with SE swell.
  • Afternoon surf: Afternoon surf (01 Sep, local time) - 1ft (0.3m), 8s period with SE swell.
  • Evening surf: Evening surf (01 Sep, local time) - 1ft (0.3m), 9s period with SE swell.

The current surf forecast for Plum Island at 9AM is: 0.3m 8s primary swell from a Southeast direction and 0.3m 3s secondary swell from a South direction (forecast issued at 01:00am September 01). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (01 Sep)1ft (0.3m)8s
Afternoon (01 Sep)1ft (0.3m)8s
Evening (01 Sep)1ft (0.3m)9s

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


Short Range Forecast

Heavy rain (total 23mm), heaviest during Tue afternoon. Warm (max 23°C on Thu afternoon, min 16°C on Tue morning). Wind will be generally light.

Tuesday
1
Wednesday
2
Thursday
3
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
1
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)
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
9
0.3
SE
10
0.3
SE
10
0.4
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.9
SE
6
0.9
SE
6
0.9
SE
6
0.9
SE
6
0.9
SE
6
0.8
ESE
6
0.9
ESE
6
Wave Graph
Metric surfscale
Energy kJ
10
10
10
10
10
10
14
14
14
43
58
57
56
48
47
46
45
52
54
47
46
44
41
60
Wind (km/h)
15
SW
5
WSW
5
NNE
10
NE
10
ENE
10
ESE
10
SE
10
SE
10
SE
10
ESE
10
E
10
E
15
E
15
SE
15
ESE
15
SE
15
SE
15
SSE
20
SSE
15
S
10
SW
10
NE
15
N
10
N
Wind State
cross-off
off
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-on
cross
cross
High Tide
2:50AM2.55m
3:10PM2.71m
3:37AM2.47m
3:57PM2.71m
4:28AM2.37m
4:49PM2.69m
Low Tide
9:20AM0.06m
9:54PM-0.03m
10:03AM0.13m
10:46PM0.01m
10:53AM0.23m
part cloud
cloud
cloud
light rain
mod rain
light rain
cloud
part cloud
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
thunderstorm
thunderstorm
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:15
7:15
 mm
1
7
3
1
1
1
5
1
1
2
Temp °C
20
19
18
16
16
17
17
17
17
17
18
19
19
19
19
18
18
18
18
19
23
21
19
17
Feels °C
19
20
19
15
16
17
17
17
17
17
18
18
17
17
18
16
18
17
17
20
25
23
20
17
  • 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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