Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Issued: 1 am 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
17.9° C

Slightly warmer than usual

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 (04 Jul):

  • Morning surf: Morning surf (04 Jul, local time) - 1.5ft (0.4m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (04 Jul, local time) - 1.5ft (0.4m), 9s period with SE swell.
  • Evening surf: Evening surf (04 Jul, local time) - 1ft (0.3m), 9s period with SE swell.

The current surf forecast for Plum Island at 5AM is: 0.3m 9s primary swell from a Southeast direction and 0.2m 5s secondary swell from a South-southeast direction (forecast issued at 01:00am July 04). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (04 Jul)1.5ft (0.4m)9s
Afternoon (04 Jul)1.5ft (0.4m)9s
Evening (04 Jul)1ft (0.3m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 65mm), heaviest during Mon afternoon. Warm (max 31°C on Sat morning, min 15°C on Mon afternoon). Winds increasing (calm on Mon morning, fresh winds from the ENE by Mon night).

Saturday
4
Sunday
5
Monday
6
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)
0.4
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
10
0.4
SE
10
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
10
0.4
SE
9
0.4
SE
9
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
1
ESE
4
Wave Graph
Metric surfscale
Energy kJ
22
13
22
22
21
21
13
13
21
23
23
18
18
18
18
23
22
23
23
24
24
24
24
35
Wind (km/h)
15
W
10
W
15
WNW
15
WNW
15
W
20
WNW
10
WNW
10
N
10
N
10
NNW
10
NNE
15
ENE
10
ESE
15
SE
15
SSE
5
SSE
5
SE
10
SE
5
SSW
5
SSE
5
SE
15
ESE
20
E
25
E
Wind State
off
off
off
cross-off
off
cross-off
off
cross
cross-off
cross-off
cross
on
on
cross-on
cross
cross
glassy
cross-on
cross-off
glassy
cross-on
on
on
on
High Tide
2:59AM2.56m
3:30PM2.36m
3:41AM2.53m
4:12PM2.42m
4:26AM2.48m
4:57PM2.48m
Low Tide
9:56AM0.15m
10:06PM0.40m
10:32AM0.17m
10:49PM0.37m
11:10AM0.19m
clear
clear
clear
clear
part cloud
thunderstorm
thunderstorm
rain showers
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
heavy rain
mod rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:23
8:23
 mm
1
1
1
1
4
16
10
9
Temp °C
26
25
26
31
31
31
29
25
22
21
21
21
22
22
20
20
20
20
19
17
15
15
15
15
Feels °C
26
26
26
31
30
30
30
26
21
20
19
19
21
20
18
20
21
20
20
18
15
13
12
12
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
10
0.4
SE
10
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
10
0.4
SE
3
0.4
SE
9
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
Energy kJ
22
13
22
22
21
21
13
13
21
23
23
18
18
18
18
23
3
23
23
24
24
24
24
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
5
0.2
SSE
5
0.1
SE
5
0.2
SSE
3
0.2
SSE
3
0.2
S
5
0.2
SSE
6
0.1
SE
6
0.1
S
6
0.4
SE
9
0.3
SE
3
Energy kJ
2
2
1
1
1
2
4
1
1
22
2
Swell 3
Height (m)
Direction
Period (s)
0.1
E
15
0.1
SE
6
0.1
SE
10
0.1
SE
10
Energy kJ
4
2
4
4
Wind waves
Height (m)
Direction
Period (s)
0.3
WNW
3
0.3
W
3
0.3
NNW
3
0.3
NNE
4
0.4
NNE
4
0.4
NE
4
0.3
NE
4
0.3
NE
3
0.4
SE
3
0.4
SSE
3
0.3
SE
3
0.3
SE
3
0.3
SE
3
0.3
SE
4
0.4
ESE
4
1
ESE
4
Energy kJ
1
1
1
2
6
4
2
2
2
4
2
2
2
2
6
35
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
Distance (km)
390
154
231
231
231
260
2003
319
183
448
274
627
2554
2554
1999
1999
3518
455
2554
2554
1284
509
1282
509
Best forecast wave conditions in Massachusetts
Rating
(10 max)
Best forecast wave conditions in United States
Rating
(10 max)
2
1
2
2
2
2
2
1
1
1
2
2
3
3
2
1
1
2
3
3
3
3
2
2
Header Global
Rating
(10 max)
8
5
5
5
5
5
4
5
5
9
9
9
8
7
5
7
6
5
6
5
5
9
8
7
  • 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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