Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 am Thursday 28 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Plum Island sea temperature is
11.9° C
(Which is slightly warmer than usual)

How big are the waves at Plum Island today (28 May):

  • Morning surf: Morning surf (28 May, local time) - 1ft (0.3m), 6s period with SE swell.
  • Afternoon surf: Afternoon surf (28 May, local time) - 1ft (0.3m), 6s period with SE swell.
  • Evening surf: Evening surf (28 May, local time) - 0.5ft (0.2m), 9s period with E swell.

The current surf forecast for Plum Island at 4PM is: 0.2m 6s primary swell from a South-southeast direction and 0.4m 4s secondary swell from a Northeast direction (forecast issued at 07:00am May 28). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (28 May)1ft (0.3m)6s
Afternoon (28 May)1ft (0.3m)6s
Evening (28 May)0.5ft (0.2m)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 42mm), heaviest during Fri night. Very mild (max 15°C on Thu morning, min 4°C on Sat morning). Winds increasing (light winds from the NNE on Thu night, near gales from the N by Sat morning).

Thursday
28
Friday
29
Saturday
30
Sun
31
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
2 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
3
3
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SE
6
0.3
SE
6
0.3
SE
6
0.4
NE
4
0.2
E
9
0.2
E
9
0.6
NNE
4
0.5
NE
4
0.4
NE
4
0.4
NE
4
0.3
SE
8
0.3
ENE
8
0.5
ENE
8
0.4
ENE
8
0.5
E
9
0.5
ENE
9
4
NE
8
3.5
NE
9
3
NE
8
3
ENE
8
2.5
ENE
8
2.3
ENE
9
1.9
ENE
9
Wave Graph
Metric surfscale
Energy kJ
10
10
6
6
4
7
6
8
7
6
6
11
13
32
20
42
46
2227
2033
1457
1148
891
808
586
Wind (km/h)
10
NNW
10
N
10
NE
10
ENE
10
ENE
5
NNE
15
N
15
N
5
WNW
15
WNW
10
NE
10
SE
20
SSE
15
S
15
SSW
25
WNW
20
NNW
55
N
40
N
35
NNE
30
NNE
10
NNW
15
NW
15
WNW
cross-off
cross
cross-on
cross-on
on
cross
cross
cross
cross-off
cross-off
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
High Tide
10:53AM2.19m
11:00PM2.45m
11:38AM2.17m
11:38PM2.47m
12:17PM2.15m
00:15AM2.48m
Low Tide
5:00AM0.01m
5:13PM0.21m
5:47AM-0.04m
5:58PM0.24m
6:31AM-0.06m
6:40PM0.28m
part cloud
clear
clear
light rain
rain showers
rain showers
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
light rain
light rain
heavy rain
light rain
heavy rain
light rain
light rain
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:09
5:07
5:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:10
8:12
8:13
8:13
1
2
1
1
3
14
2
14
3
1
Temp °C
15
15
15
14
14
14
13
11
10
12
14
14
15
13
12
8
7
4
5
7
10
11
11
10
13
13
13
12
13
13
10
8
8
9
11
11
11
10
10
2
3
-8
-5
-1
2
7
7
6
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SE
6
0.3
SE
6
0.3
SE
6
0.4
NE
4
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.5
NE
4
0.4
NE
4
0.4
NE
4
0.4
ENE
5
0.4
NE
5
0.5
ENE
8
0.4
ENE
8
0.5
E
9
0.5
ENE
9
0.3
SSE
5
2.2
E
9
2.3
ENE
9
1.9
ENE
9
Energy kJ
10
10
6
6
3
6
6
6
7
5
5
11
7
32
20
42
46
5
777
808
586
Swell 2
Height (m)
Direction
Period (s)
0.1
E
11
0.2
SSE
6
0.2
E
9
0.2
E
9
0.2
E
9
0.2
SSE
8
0.2
E
8
0.2
E
8
0.2
E
8
0.3
ENE
8
0.1
SE
8
0.1
SE
8
0.1
SE
8
0.5
SSE
5
Energy kJ
2
4
7
6
6
6
6
5
5
13
3
3
3
12
Swell 3
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
13
0.1
E
13
0.1
E
12
0.2
E
9
0.2
SSE
8
0.2
SSE
8
0.1
E
15
0.1
E
10
0.1
E
10
0.1
SE
8
0.1
SE
8
Energy kJ
2
3
3
3
6
6
6
4
2
2
3
3
Wind waves
Height (m)
Direction
Period (s)
0.5
NE
4
0.4
NE
4
0.4
NE
4
0.4
NE
4
0.3
NE
4
0.4
NE
4
0.6
NNE
4
0.4
N
4
0.3
SE
8
0.4
SSE
3
0.5
SSE
3
0.4
SSE
3
0.7
S
4
0.5
WNW
4
4
NE
8
3.5
NE
9
3
NE
8
3
ENE
8
2.5
ENE
8
Energy kJ
6
4
4
3
2
5
8
4
10
3
6
3
14
7
2227
2033
1457
1148
891
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
2
2
1
3
3
3
Distance (km)
170
170
170
211
258
169
170
231
231
231
110
499
80
75
287
287
507
633
920
920
863
0
0
0
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
3
4
3
Best forecast wave conditions in United States
Rating
(10 max)
1
4
5
1
1
1
1
1
1
2
2
1
1
1
1
2
2
4
2
1
1
3
4
3
Header Global
Rating
(10 max)
8
9
7
7
7
7
5
5
5
5
5
4
5
5
5
5
5
5
6
8
7
7
7
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

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