Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 1 am Thursday 30 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
8.0° C
(Which is 1.1°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: 2.0m 10s primary swell from a East-southeast direction (forecast issued at 01:00am April 30). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (EDT) & DateWave HeightWave Period
Morning (30 Apr)6.5ft (2.0m)10s
Afternoon (30 Apr)6ft (1.8m)10s
Evening (30 Apr)5.5ft (1.7m)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 3mm), mostly falling on Thu morning. Very mild (max 13°C on Fri afternoon, min 7°C on Thu morning). Wind will be generally light.

Thursday
30
Friday
1
Saturday
2
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)
2
3
3
3
3
3
3
3
2
2
1
1
2
2
2
2
1
1
1
1
0
0
0
0
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)
2
ESE
10
2
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
1.8
ESE
10
1.7
ESE
10
1.7
ESE
10
1.6
ESE
10
1.5
ESE
9
1.4
ESE
9
1.4
ESE
9
1.3
ESE
9
1.3
ESE
9
1.2
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
E
9
1.1
E
9
1
E
9
1
E
8
1
E
9
1
E
9
Wave Graph
Metric surfscale
Energy kJ
732
810
778
692
657
579
518
508
435
367
307
300
254
249
238
197
193
193
186
181
151
147
158
165
Wind (km/h)
5
ENE
5
NNW
10
NNW
5
N
0
NNW
0
WSW
5
WNW
5
W
10
WNW
15
NW
15
NW
15
NW
10
WNW
5
NNW
5
NNE
0
S
5
WNW
10
WNW
10
NNW
5
NE
10
SSE
15
SSE
10
S
10
S
on
glassy
cross-off
glassy
glassy
glassy
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
glassy
cross-off
cross-off
glassy
cross
cross
cross
cross
High Tide
11:32PM2.51m
12:00PM2.34m
00:08AM2.52m
12:39PM2.31m
00:43AM2.52m
1:15PM2.27m
Low Tide
6:10AM-0.09m
6:25PM0.08m
6:54AM-0.13m
7:06PM0.13m
7:35AM-0.12m
7:46PM0.20m
cloud
light rain
cloud
light rain
light rain
cloud
part cloud
part cloud
part cloud
cloud
clear
clear
cloud
cloud
part cloud
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:37
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:42
7:43
7:44
1
2
1
Temp °C
7
7
7
8
9
10
10
9
8
7
7
11
13
13
11
9
8
7
7
7
8
9
8
8
5
6
5
7
8
9
8
7
5
3
2
6
10
10
9
7
5
3
4
5
5
6
5
6
Swell 1
Height (m)
Direction
Period (s)
2
ESE
10
2
ESE
10
2
ESE
10
1.9
ESE
10
1.9
ESE
10
1.8
ESE
10
1.7
ESE
10
1.7
ESE
10
1.6
ESE
10
1.5
ESE
9
1.4
ESE
9
1.4
ESE
9
1.3
ESE
9
1.3
ESE
9
1.2
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
E
9
1.1
E
9
1
E
9
1
E
8
1
E
9
1
E
9
Energy kJ
732
810
778
692
657
579
518
508
435
367
307
300
254
249
238
197
193
193
186
181
151
147
158
165
Swell 2
Height (m)
Direction
Period (s)
0.3
NW
3
0.1
E
15
0.2
N
3
0.2
N
3
Energy kJ
1
4
1
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.3
NW
2
0.4
NW
3
0.3
NNW
2
0.5
S
3
0.5
S
3
0.5
S
3
Energy kJ
1
2
1
4
6
5
Nearest Offshore or Glassy
Rating
(10 max)
2
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
Distance (km)
25
0
0
0
0
0
0
0
0
0
13
4
0
0
0
0
0
0
0
0
55
75
4
4
Best forecast wave conditions in Massachusetts
Rating
(10 max)
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
1
1
1
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
1
1
1
3
1
1
1
2
Header Global
Rating
(10 max)
5
5
5
5
6
6
6
7
7
7
6
5
5
9
9
5
5
5
4
4
4
4
4
4
  • 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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