Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 1 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 7AM is: 2.1m 10s primary swell from a East direction (forecast issued at 01:00am 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)6ft (1.9m)10s
Evening (29 Apr)6.5ft (2.0m)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 9mm), mostly falling on Wed night. 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
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)
1
2
0
0
0
1
1
2
2
1
1
3
3
3
3
3
2
2
1
2
2
2
2
2
Swell
Height Map
<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>
<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)
1.8
E
9
2
E
10
2.1
E
10
2.1
E
10
2
E
10
2
ESE
10
1.9
ESE
10
2
ESE
10
2
ESE
10
2.1
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
1.7
ESE
10
1.6
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.3
ESE
9
Wave Graph
Metric surfscale
Energy kJ
553
786
882
878
783
727
644
717
741
850
833
761
702
664
587
567
497
400
337
329
322
322
322
270
Wind (km/h)
10
NE
15
NNE
15
NE
20
ENE
15
NE
15
ENE
10
E
5
E
10
E
10
SSE
10
SSE
5
SSW
5
SSE
5
WSW
5
W
10
NW
10
NW
15
WNW
20
WNW
15
NW
5
WNW
20
W
20
W
15
W
cross-on
cross
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-off
glassy
off
glassy
cross-off
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
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
light rain
light rain
cloud
cloud
cloud
cloud
part cloud
clear
clear
cloud
part cloud
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:40
7:42
7:43
1
1
2
2
1
1
1
Temp °C
6
6
6
6
7
6
7
7
8
8
9
10
11
11
11
10
9
7
9
12
12
13
10
7
3
2
2
2
3
2
4
5
6
5
7
9
10
9
10
8
6
3
4
7
10
8
5
2
Swell 1
Height (m)
Direction
Period (s)
1.8
E
9
2
E
10
2.1
E
10
2.1
E
10
2
E
10
2
ESE
10
1.9
ESE
10
2
ESE
10
2
ESE
10
2.1
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
1.7
ESE
10
1.6
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.5
ESE
9
1.3
ESE
9
Energy kJ
553
786
882
878
783
727
644
717
741
850
833
761
702
664
587
567
497
400
337
329
322
322
322
270
Swell 2
Height (m)
Direction
Period (s)
0.1
S
5
Energy kJ
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.5
SE
4
0.3
WNW
2
0.3
WNW
3
0.2
W
3
0.4
WNW
3
0.4
W
3
Energy kJ
6
1
1
1
4
2
Nearest Offshore or Glassy
Rating
(10 max)
2
3
2
2
2
2
2
2
2
2
3
3
3
3
3
3
2
2
2
2
2
2
2
2
Distance (km)
25
13
25
25
25
25
25
25
52
52
75
0
0
0
0
0
0
0
13
0
0
0
0
0
Best forecast wave conditions in Massachusetts
Rating
(10 max)
2
2
2
2
2
2
2
2
2
3
3
4
4
3
3
3
2
2
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
4
2
2
2
2
3
3
3
4
4
3
3
3
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
9
8
8
8
7
6
5
5
5
5
5
5
6
6
6
6
7
5
5
5
5
5
4
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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