Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 am Wednesday 29 Apr 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
7.8° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at Plum Island today?

The current surf forecast for Plum Island at 3PM is: 2.0m 10s primary swell from a East-southeast direction (forecast issued at 07:00am April 29). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (29 Apr)7ft (2.1m)10s
Afternoon (29 Apr)6.5ft (2.0m)10s
Evening (29 Apr)6ft (1.9m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 8mm), mostly falling on Thu morning. Very mild (max 13°C on Fri afternoon, min 5°C on Fri night). Wind will be generally light.

Wednesday
29
Thursday
30
Friday
1
Sat
2
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)
2
1
0
1
1
2
1
2
2
2
3
2
3
3
2
2
2
2
2
2
2
2
2
2
Swell
Height Map
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<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
2
E
10
2.1
E
10
2.1
E
10
2.1
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
2
ESE
10
2.1
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
1.8
ESE
10
1.8
ESE
10
1.8
ESE
10
1.7
ESE
10
1.6
ESE
9
1.6
ESE
9
1.6
ESE
9
1.5
ESE
9
1.5
ESE
9
1.3
ESE
9
1.2
ESE
9
1.2
ESE
9
Wave Graph
Metric surfscale
Energy kJ
786
896
878
800
727
644
651
756
867
820
717
702
600
579
567
551
451
442
374
329
329
276
232
232
Wind (km/h)
15
NNE
15
NE
20
ENE
15
ENE
15
ENE
10
E
10
E
10
E
10
SSE
10
SSE
5
SW
5
S
5
SSE
5
N
10
N
5
N
5
W
15
WNW
15
NW
15
WNW
5
NNW
15
WNW
15
WNW
15
W
cross
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
glassy
cross
glassy
glassy
cross
cross
off
off
cross-off
cross-off
glassy
off
off
off
High Tide
11:17AM2.37m
11:32PM2.51m
12:00PM2.34m
00:08AM2.52m
12:39PM2.31m
00:43AM2.52m
Low Tide
5:24AM-0.02m
5:42PM0.05m
6:10AM-0.09m
6:25PM0.08m
6:54AM-0.13m
7:06PM0.13m
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
rain showers
light rain
light rain
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:37
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:40
7:42
7:43
7:44
1
1
2
1
1
1
1
Temp °C
6
6
6
7
6
7
7
7
8
9
10
12
11
11
10
9
9
9
11
13
11
10
8
6
3
2
2
3
2
5
4
5
6
7
9
11
10
10
8
7
7
6
7
9
9
6
4
1
Swell 1
Height (m)
Direction
Period (s)
2
E
10
2.1
E
10
2.1
E
10
2.1
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
2
ESE
10
2.1
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
1.8
ESE
10
1.8
ESE
10
1.8
ESE
10
1.7
ESE
10
1.6
ESE
9
1.6
ESE
9
1.6
ESE
9
1.5
ESE
9
1.5
ESE
9
1.3
ESE
9
1.2
ESE
9
1.2
ESE
9
Energy kJ
786
896
878
800
727
644
651
756
867
820
717
702
600
579
567
551
451
442
374
329
329
276
232
232
Swell 2
Height (m)
Direction
Period (s)
0.3
WSW
3
0.1
S
6
Energy kJ
1
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.3
W
2
0.3
W
3
0.3
W
2
Energy kJ
1
1
1
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
2
2
2
2
3
2
2
3
3
3
3
3
3
2
2
2
2
2
2
2
2
Distance (km)
13
25
25
25
25
25
81
25
52
52
0
4
0
0
13
13
0
0
0
0
0
0
0
0
Best forecast wave conditions in Massachusetts
Rating
(10 max)
2
3
2
2
2
2
2
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
3
4
3
2
2
2
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
8
5
8
7
6
5
5
5
5
5
5
6
6
6
6
7
5
5
5
5
5
9
7
5
  • 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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