Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 am Tuesday 19 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
9.7° C
(Which is normal for this time of year)

How big are the waves at Plum Island today?

The current surf forecast for Plum Island at 1PM is: 0.7m 5s primary swell from a South direction and 0.4m 8s secondary swell from a Southeast direction, 0.1m 13s secondary swell from a East direction (forecast issued at 07:00am May 19). The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (19 May)1.5ft (0.4m)9s
Afternoon (19 May)2.5ft (0.7m)5s
Evening (19 May)5ft (1.5m)6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 34°C on Tue afternoon, min 10°C on Thu morning). Winds decreasing (fresh winds from the WNW on Wed afternoon, calm by Thu morning).

Tuesday
19
Wednesday
20
Thursday
21
Fri
22
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
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
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
9
0.4
SE
9
0.4
SE
9
0.7
S
5
0.7
SSE
5
1.5
S
6
1.1
SSE
7
0.8
SSE
7
0.7
SSE
8
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.9
NE
5
0.7
NE
5
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
Wave Graph
Metric surfscale
Energy kJ
28
27
26
28
30
194
102
62
58
26
28
29
29
21
21
21
29
28
45
25
13
13
13
13
Wind (km/h)
10
SW
15
SW
15
WSW
20
WSW
20
W
15
WSW
15
WSW
10
SW
15
SW
15
WSW
20
W
30
WNW
20
WNW
15
WNW
15
WNW
20
NW
25
NW
15
NW
5
NE
10
ESE
15
SSE
10
SSW
10
N
10
NNE
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
cross
cross
High Tide
2:26PM2.53m
2:40AM2.98m
3:22PM2.48m
3:37AM2.87m
4:21PM2.42m
Low Tide
8:45AM-0.37m
8:54PM0.08m
9:42AM-0.28m
9:54PM0.16m
10:41AM-0.17m
10:58PM0.24m
clear
clear
clear
clear
cloud
clear
clear
clear
clear
part cloud
clear
cloud
clear
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:16
5:16
5:15
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:01
8:02
8:04
8:05
Temp °C
19
22
30
33
34
25
24
24
23
24
29
30
27
23
20
16
13
10
12
13
14
15
13
12
19
22
29
31
32
25
25
25
23
24
28
27
25
21
17
11
7
5
10
10
9
11
9
8
Swell 1
Height (m)
Direction
Period (s)
0.7
SSE
4
0.5
SSE
4
0.4
SE
9
0.4
SE
8
0.7
SSE
5
1.2
SSE
6
1.1
SSE
7
0.8
SSE
7
0.7
SSE
8
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SSE
6
0.4
SSE
6
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.7
NE
5
0.4
NE
4
0.3
SE
9
0.3
SE
9
0.3
SE
9
Energy kJ
16
11
26
24
30
113
102
62
58
26
28
29
29
6
11
21
29
28
20
25
7
13
13
13
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
9
0.1
E
13
0.1
E
13
0.4
SE
8
0.1
E
16
0.1
E
16
0.1
E
16
0.1
E
16
0.1
E
16
0.4
SSE
4
0.4
S
5
0.3
SSE
5
0.4
SE
9
0.4
SE
9
0.3
SSE
6
0.1
E
14
0.2
W
3
0.3
SE
9
0.3
SE
9
0.3
NE
4
Energy kJ
28
27
3
3
18
5
5
5
5
5
6
8
6
21
21
6
4
1
12
13
2
Swell 3
Height (m)
Direction
Period (s)
0.1
E
13
0.1
E
13
0.1
E
16
0.4
SE
7
0.1
E
16
0.1
E
13
0.1
E
16
0.1
E
16
0.1
E
16
0.1
SE
12
0.1
SE
12
0.1
E
12
0.1
E
14
0.1
E
14
0.1
E
15
0.1
E
14
0.1
E
14
0.1
SE
5
0.1
E
14
0.1
NE
5
0.1
SE
5
Energy kJ
3
3
5
12
5
3
5
5
5
6
6
3
4
4
4
4
4
1
4
1
1
Wind waves
Height (m)
Direction
Period (s)
0.2
WSW
3
0.4
SW
3
0.7
S
5
0.7
S
5
0.4
SW
3
1.5
S
6
0.4
W
3
0.4
WSW
3
0.4
WSW
3
0.7
SSW
3
0.4
WSW
3
0.3
WSW
3
0.6
WNW
3
0.5
WNW
3
0.5
WNW
3
0.6
NW
3
0.4
NW
3
0.5
N
3
0.9
NE
5
0.2
SSE
5
0.3
SSE
2
Energy kJ
1
2
25
28
2
194
3
4
4
10
4
2
9
7
5
6
3
5
45
3
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
9
13
13
182
0
132
0
0
0
17
377
54
54
146
54
145
169
170
0
170
507
507
381
216
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
1
2
2
2
1
2
4
2
1
2
2
1
3
3
2
2
1
1
2
2
Header Global
Rating
(10 max)
4
4
4
4
5
5
5
5
4
4
4
5
5
4
4
5
5
4
4
5
4
5
5
6
  • 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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