Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Issued: 7 am 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
14.6° C

Slightly cooler than normal

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 (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 0.5ft (0.2m), 9s period with SSE swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.
  • Evening surf: Evening surf (21 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.

The current surf forecast for Plum Island at 3PM is: 0.2m 8s primary swell from a South-southeast direction (forecast issued at 07:00am June 21). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Jun)0.5ft (0.2m)9s
Afternoon (21 Jun)0.5ft (0.2m)8s
Evening (21 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 36mm), heaviest during Mon night. Warm (max 23°C on Sun morning, min 14°C on Mon night). Wind will be generally light.

Sunday
21
Monday
22
Tuesday
23
Wed
24
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
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSE
10
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
0.2
SSE
6
0.4
SE
3
0.4
SSE
4
0.7
SE
4
0.8
SSE
5
0.9
SSE
5
0.7
SE
5
0.5
SE
5
0.4
SSE
5
0.6
SE
6
0.6
SE
7
Wave Graph
Metric surfscale
Energy kJ
9
8
8
7
6
6
2
6
5
5
5
5
5
5
5
5
19
27
35
23
11
11
20
31
Wind (km/h)
10
WSW
15
W
10
WNW
5
ESE
5
ESE
5
WSW
10
WNW
10
WNW
10
WNW
5
N
5
E
15
SW
5
SSW
15
SE
15
SE
15
SE
5
WSW
15
N
15
N
15
N
5
NNE
10
SE
10
WSW
10
WNW
Wind State
off
off
cross-off
cross-on
cross-on
cross-off
off
cross-off
cross-off
glassy
glassy
cross-off
glassy
cross-on
cross-on
cross-on
glassy
cross
cross
cross
glassy
cross-on
cross-off
cross-off
High Tide
5:20AM2.51m
6:01PM2.42m
6:22AM2.34m
7:00PM2.39m
7:25AM2.20m
7:57PM2.37m
Low Tide
12:16PM0.02m
00:47AM0.20m
1:13PM0.11m
1:48AM0.18m
2:08PM0.20m
clear
clear
clear
cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
mod rain
light rain
light rain
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:05
5:05
5:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:24
8:24
8:24
8:24
 mm
1
4
7
9
3
6
3
3
Temp °C
15
18
23
22
21
22
19
18
17
17
19
18
15
14
15
15
16
15
15
16
19
19
18
18
Feels °C
13
16
21
21
20
22
18
17
16
17
20
17
15
13
14
13
17
14
14
15
19
19
18
17
Swell 1
Height (m)
Direction
Period (s)
0.2
SSE
10
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.1
SE
8
0.2
SSE
5
0.2
SSE
5
0.2
SSE
5
0.2
SSE
7
0.2
SSE
7
0.2
SSE
6
0.1
SE
11
0.1
SE
6
0.1
S
6
0.1
SE
9
0.1
SE
8
0.1
SE
8
0.7
SE
5
0.5
SE
5
0.4
SSE
5
0.6
SE
6
0.6
SE
7
Energy kJ
9
8
8
7
6
6
2
2
2
2
5
4
4
5
2
1
3
3
3
23
11
11
20
31
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
12
0.1
SE
12
0.1
E
12
0.1
E
12
0.2
SSE
2
0.1
SE
7
0.1
SE
7
0.1
SE
7
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
E
11
0.1
E
11
0.1
E
11
0.2
E
4
0.2
NNE
3
Energy kJ
6
6
3
3
1
2
2
2
5
5
5
5
5
5
5
2
2
2
1
1
Swell 3
Height (m)
Direction
Period (s)
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
8
0.1
E
7
0.1
E
7
0.1
E
11
0.1
E
11
0.1
E
7
Energy kJ
3
3
6
6
6
5
5
2
1
1
2
2
1
Wind waves
Height (m)
Direction
Period (s)
0.3
W
3
0.3
W
2
0.2
WSW
2
0.2
SSE
6
0.4
SE
3
0.4
SSE
4
0.7
SE
4
0.8
SSE
5
0.9
SSE
5
0.4
NNE
3
0.4
NE
3
Energy kJ
1
1
1
4
2
5
19
27
35
3
3
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
Distance (km)
146
166
166
626
258
626
152
216
231
633
3352
2736
2003
3552
617
377
339
182
54
145
145
177
166
110
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
1
1
2
3
3
3
2
2
1
1
2
2
2
3
3
3
1
1
1
2
3
Header Global
Rating
(10 max)
8
8
7
7
7
6
6
5
7
6
6
5
5
5
5
5
5
5
5
5
7
8
9
7
  • 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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