Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
17.9° C
1.5° 

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 (30 Jul):

  • Morning surf: Morning surf (30 Jul, local time) - 5.5ft (1.7m), 6s period with ENE swell.
  • Afternoon surf: Afternoon surf (30 Jul, local time) - 6.5ft (2.0m), 7s period with NE swell.
  • Evening surf: Evening surf (30 Jul, local time) - 5ft (1.5m), 6s period with ENE swell.

The current surf forecast for Plum Island at 12PM is: 2.0m 6s primary swell from a Northeast direction and 0.5m 9s secondary swell from a Southeast direction (forecast issued at 07:00am July 30). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (30 Jul)5.5ft (1.7m)6s
Afternoon (30 Jul)6.5ft (2.0m)7s
Evening (30 Jul)5ft (1.5m)6s

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


Short Range Forecast

Some drizzle, heaviest during Thu morning. Warm (max 27°C on Sat afternoon, min 17°C on Thu morning). Wind will be generally light.

Thursday
30
Friday
31
Saturday
1
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)
0
0
0
0
0
0
2
1
1
1
1
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)
1.5
ENE
6
1.7
ENE
6
2
NE
6
2
NE
7
1.9
NE
7
1.7
ENE
7
1.4
ENE
6
1.3
ENE
6
1.2
ENE
6
1
ENE
6
0.9
NE
6
0.5
SE
9
0.5
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
1
SSE
4
1
S
5
Wave Graph
Metric surfscale
Energy kJ
151
204
301
342
305
237
150
118
99
75
46
42
40
28
28
29
29
28
28
28
28
38
47
Wind (km/h)
25
NNE
25
NNE
25
NNE
20
NNE
20
NNE
20
N
15
NNW
10
NNW
10
NNW
10
NW
5
NNE
10
SSE
15
SSE
10
SSW
10
SW
10
SW
10
WSW
5
WSW
5
SE
15
SE
20
SSE
20
S
15
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross
cross-off
cross-off
High Tide
1:07PM2.28m
1:15AM2.59m
1:43PM2.36m
1:52AM2.60m
2:20PM2.44m
Low Tide
7:39AM0.07m
7:44PM0.32m
8:14AM0.07m
8:20PM0.28m
8:47AM0.06m
8:57PM0.23m
cloud
light rain
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:06
8:05
8:04
 mm
1
Temp °C
17
17
17
18
18
19
19
18
18
19
20
22
24
22
21
21
20
20
25
27
27
25
23
Feels °C
14
14
14
16
16
17
18
17
17
19
20
22
23
22
21
22
21
21
26
26
25
24
23
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Plum Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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