Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
20.6° C
0.9° 

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 (16 Aug):

  • Morning surf: Morning surf (16 Aug, local time) - 0.5ft (0.1m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (16 Aug, local time) - 1ft (0.3m), 9s period with SE swell.
  • Evening surf: Evening surf (16 Aug, local time) - 3.5ft (1.1m), 4s period with S swell.

The current surf forecast for Plum Island at 10AM is: 0.1m 9s primary swell from a Southeast direction and 0.3m 3s secondary swell from a Northeast direction, 0.2m 3s secondary swell from a North-northeast direction (forecast issued at 01:00am August 16). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (16 Aug)0.5ft (0.1m)9s
Afternoon (16 Aug)1ft (0.3m)9s
Evening (16 Aug)3.5ft (1.1m)4s

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


Short Range Forecast

Moderate rain (total 15mm), heaviest on Mon afternoon. Warm (max 23°C on Sun night, min 16°C on Sun morning). Wind will be generally light.

Sunday
16
Monday
17
Tuesday
18
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
9
0.3
SE
9
0.1
SE
9
0.1
SE
9
0.3
SE
9
0.3
SE
9
1.1
S
4
1.1
S
5
1
S
5
0.9
S
5
0.9
S
4
0.9
S
4
0.9
S
4
0.7
SSE
4
0.8
SSE
4
0.8
SSE
4
0.7
SE
5
0.6
SE
5
0.6
SE
5
0.4
SSE
6
0.8
SE
8
1
SE
8
0.9
SE
8
0.9
SE
8
Wave Graph
Metric surfscale
Energy kJ
8
12
3
3
12
12
43
52
41
35
32
28
28
17
17
24
23
19
15
12
95
125
101
84
Wind (km/h)
10
NNW
10
N
5
N
5
E
15
ESE
20
SE
25
S
20
SSW
20
SSW
15
S
15
SSW
15
S
15
S
10
SSE
10
SE
10
ESE
5
E
10
NNE
10
NNE
15
NE
15
NE
15
NE
10
E
10
ENE
Wind State
cross-off
cross
cross
on
cross-on
cross-on
cross
cross-off
cross-off
cross
cross-off
cross
cross
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
High Tide
2:44AM2.65m
3:10PM2.57m
3:32AM2.48m
3:55PM2.49m
4:20AM2.30m
4:42PM2.40m
Low Tide
9:30AM-0.12m
9:56PM-0.05m
10:18AM0.01m
10:48PM0.03m
11:07AM0.16m
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:44
7:42
7:40
 mm
1
1
2
4
4
2
1
Temp °C
19
17
16
19
21
22
23
22
21
21
20
19
19
19
20
20
20
19
19
19
19
19
18
18
Feels °C
17
15
15
19
19
19
20
20
19
20
20
19
20
20
22
22
22
20
20
19
19
19
18
19
  • 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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