Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Issued: 1 pm 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
15.7° C

Slightly warmer than usual

Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Plum Island today (20 Jun):

  • Morning surf: Morning surf (20 Jun, local time) - 1ft (0.3m), 8s period with SSE swell.
  • Afternoon surf: Afternoon surf (20 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.
  • Evening surf: Evening surf (20 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.

The current surf forecast for Plum Island at 9PM is: 0.2m 8s primary swell from a South-southeast direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 01:00pm June 20). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (20 Jun)1ft (0.3m)8s
Afternoon (20 Jun)0.5ft (0.2m)8s
Evening (20 Jun)0.5ft (0.2m)8s

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 29mm), heaviest during Mon night. Warm (max 23°C on Sun morning, min 14°C on Sat night). Wind will be generally light.

Sat
20
Sunday
21
Monday
22
Tue
23
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
5 AM
8 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.4
SE
10
0.2
SSE
9
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.1
SE
8
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.2
SSE
7
0.2
SSE
7
0.2
SSE
6
0.1
SE
11
0.4
SE
3
0.4
ESE
3
0.5
SE
5
0.7
SSE
6
Wave Graph
Metric surfscale
Energy kJ
7
7
7
6
6
25
8
8
7
7
6
6
2
6
5
5
5
5
5
5
5
5
10
28
Wind (km/h)
20
WNW
25
NW
20
NW
10
WNW
10
W
15
WSW
10
W
10
W
5
WNW
10
ENE
15
ENE
10
S
10
WSW
10
WNW
10
WNW
5
NW
10
ESE
15
WSW
0
ESE
10
SE
15
E
15
E
15
NNE
10
N
Wind State
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
on
cross-on
cross
off
off
cross-off
glassy
cross-on
cross-off
glassy
cross-on
on
on
cross
cross
High Tide
5:04PM2.46m
5:20AM2.51m
6:01PM2.42m
6:22AM2.34m
7:00PM2.39m
7:25AM2.20m
Low Tide
11:20AM-0.09m
11:45PM0.18m
12:16PM0.02m
00:47AM0.20m
1:13PM0.11m
1:48AM0.18m
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
thunderstorm
rain showers
clear
clear
clear
cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:05
5:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:24
8:24
8:24
 mm
2
1
2
5
10
6
3
Temp °C
22
22
22
20
17
16
14
18
23
20
19
20
20
19
17
18
20
16
15
15
15
15
14
15
Feels °C
18
17
19
19
16
15
12
16
22
19
17
19
19
18
16
18
19
14
16
15
14
14
13
15
Swell 1
Height (m)
Direction
Period (s)
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.4
SE
10
0.2
SSE
9
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
3
0.1
SE
8
0.2
SSE
5
0.2
SSE
5
0.1
SE
7
0.2
SSE
7
0.2
SSE
7
0.2
SSE
6
0.2
SSE
2
0.1
SE
6
0.1
S
6
0.5
SE
5
0.7
SSE
6
Energy kJ
7
7
7
6
6
25
8
8
7
7
6
1
2
2
2
2
5
4
4
1
2
1
10
28
Swell 2
Height (m)
Direction
Period (s)
0.2
SSW
4
0.1
SW
4
0.1
SE
13
0.1
SE
12
0.1
SE
10
0.2
SSE
10
0.1
SE
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
SE
12
0.2
SSE
8
0.1
SE
7
0.1
SE
7
0.1
SE
4
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
6
0.1
SE
11
0.1
SE
11
0.3
SE
6
0.1
E
11
Energy kJ
2
1
6
6
4
9
6
3
3
3
6
6
2
2
1
5
5
5
2
5
5
5
2
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
13
0.1
SE
13
0.1
SE
10
0.1
SE
12
0.1
SE
12
0.1
E
12
0.1
E
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
SE
8
0.1
SE
11
Energy kJ
7
7
4
6
6
3
3
6
6
6
6
5
5
5
2
5
Wind waves
Height (m)
Direction
Period (s)
0.6
W
4
0.4
WNW
3
0.6
NW
4
0.5
NW
3
0.3
WNW
3
0.3
W
3
0.3
W
3
0.3
WSW
3
0.2
SSE
2
0.4
SE
3
0.4
ESE
3
0.2
ENE
3
0.4
NE
3
Energy kJ
9
4
10
6
2
1
1
1
1
2
5
1
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
Distance (km)
391
166
163
118
118
118
145
166
166
2003
391
499
152
211
231
633
3552
2737
1999
377
337
182
145
145
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
3
2
2
3
3
3
3
3
1
1
2
3
3
3
2
2
1
2
2
3
3
3
Header Global
Rating
(10 max)
5
5
5
9
9
9
8
8
7
7
7
6
6
6
7
7
5
5
5
5
5
6
5
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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