Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 pm 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.2° C
1.3° 

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 (01 Aug):

  • Morning surf: Morning surf (01 Aug, local time) - 1.5ft (0.4m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (01 Aug, local time) - 1.5ft (0.4m), 8s period with SE swell.
  • Evening surf: Evening surf (01 Aug, local time) - 1ft (0.3m), 9s period with SE swell.

The current surf forecast for Plum Island at 1AM is: 0.4m 9s primary swell from a Southeast direction and 0.3m 6s secondary swell from a East-northeast direction (forecast issued at 07:00pm July 31). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (01 Aug)1.5ft (0.4m)9s
Afternoon (01 Aug)1.5ft (0.4m)8s
Evening (01 Aug)1ft (0.3m)9s

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


Short Range Forecast

Heavy rain (total 26mm), heaviest during Mon morning. Warm (max 27°C on Sun afternoon, min 20°C on Fri night). Wind will be generally light.

Fri
31
Saturday
1
Sunday
2
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
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SE
9
0.5
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.5
SE
9
0.4
SE
8
0.4
SE
9
0.3
SE
9
0.4
SE
9
0.8
S
5
0.7
S
5
0.3
SE
9
0.3
SE
7
0.9
SSE
4
1.3
SSE
5
1.1
SSE
5
0.9
SSE
4
Wave Graph
Metric surfscale
Energy kJ
40
39
28
28
29
29
38
16
27
12
22
27
20
12
8
24
81
61
36
Wind (km/h)
15
SSE
15
SSW
10
SW
10
SW
5
WNW
5
NW
10
E
15
E
15
SE
15
S
15
SSW
15
SSW
15
SSW
15
SSW
15
S
25
SSE
20
SSE
20
S
15
S
Wind State
cross
cross-off
cross-off
cross-off
off
glassy
on
on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
High Tide
1:52AM2.60m
2:20PM2.44m
2:32AM2.59m
2:59PM2.51m
Low Tide
8:20PM0.28m
8:47AM0.06m
8:57PM0.23m
9:20AM0.07m
9:36PM0.19m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:05
8:04
8:02
 mm
Temp °C
24
23
22
20
20
20
22
24
24
24
23
23
22
21
26
27
27
25
22
Feels °C
23
23
23
21
21
21
22
23
23
24
22
23
23
22
26
24
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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