Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 1 pm 29 Jul 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
17.3° C
2.1° 

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 (29 Jul):

  • Morning surf: Morning surf (29 Jul, local time) - 3.5ft (1.1m), 4s period with SE swell.
  • Afternoon surf: Afternoon surf (29 Jul, local time) - 4.5ft (1.4m), 5s period with ESE swell.
  • Evening surf: Evening surf (29 Jul, local time) - 5ft (1.5m), 6s period with ESE swell.

The current surf forecast for Plum Island at 6PM is: 1.5m 6s primary swell from a East-southeast direction (forecast issued at 01:00pm July 29). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (29 Jul)3.5ft (1.1m)4s
Afternoon (29 Jul)4.5ft (1.4m)5s
Evening (29 Jul)5ft (1.5m)6s

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


Short Range Forecast

Heavy rain (total 25mm), heaviest during Wed afternoon. Warm (max 25°C on Sat morning, min 17°C on Thu morning). Winds decreasing (fresh winds from the NE on Thu morning, light winds from the WSW by Sat morning).

Wed
29
Thursday
30
Friday
31
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
0
0
0
0
0
0
0
0
1
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
Wave
Height (m)
Direction
Period (s)
1.2
ESE
5
1.4
ESE
5
1.5
ESE
6
1.5
ESE
6
1.4
ESE
6
1.4
E
6
1.5
E
6
1.7
ENE
6
1.9
ENE
6
1.8
NE
6
1.6
NE
6
1.5
NE
6
1.3
ENE
6
1.2
ENE
6
1.1
NE
6
1
NE
6
0.9
ENE
6
0.5
SE
10
0.8
ENE
6
0.6
ENE
6
0.4
SE
10
Wave Graph
Metric surfscale
Energy kJ
59
109
138
136
131
121
151
198
270
237
176
143
108
84
72
61
55
44
41
24
33
Wind (km/h)
25
E
25
ESE
25
E
25
ENE
25
ENE
25
NE
25
NE
25
NE
30
NE
30
NE
30
NNE
20
NNE
20
N
15
N
15
N
15
N
10
NE
10
E
10
SE
15
SSW
10
SW
Wind State
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross
cross-on
on
cross-on
cross-off
cross-off
High Tide
12:33PM2.19m
00:37AM2.56m
1:07PM2.28m
1:15AM2.59m
1:43PM2.36m
Low Tide
7:07PM0.35m
7:39AM0.07m
7:44PM0.32m
8:14AM0.07m
8:20PM0.28m
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:07
8:06
8:05
 mm
1
4
4
4
1
1
2
2
3
2
1
Temp °C
20
19
19
19
18
18
18
17
17
17
17
17
17
17
17
18
20
20
21
21
21
Feels °C
17
17
18
17
16
16
16
14
14
14
14
15
15
16
16
17
20
20
20
20
21
  • 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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