Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 am 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.1° C
1.4° 

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 1PM is: 0.4m 8s primary swell from a Southeast direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 07:00am August 01). The wind direction is predicted to be cross-onshore.

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 35mm), heaviest during Mon afternoon. Warm (max 28°C on Sun afternoon, min 21°C on Sat morning). Wind will be generally light.

Saturday
1
Sunday
2
Monday
3
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
8
0.4
SE
9
0.3
SE
9
0.8
S
4
0.7
S
5
0.6
S
5
0.3
SE
7
0.6
S
4
0.9
SSE
4
1.2
SSE
5
1.2
SSE
5
0.9
SSE
5
0.7
SSE
4
0.6
SSE
4
0.6
SE
5
0.8
SSE
5
0.7
SSE
6
0.9
SSE
6
1.2
SSE
8
0.9
SSE
8
Wave Graph
Metric surfscale
Energy kJ
29
29
27
16
27
12
21
21
15
8
9
24
63
62
37
16
12
17
31
28
52
172
100
Wind (km/h)
10
W
5
W
5
ESE
15
ESE
15
SSE
15
S
15
SW
10
SW
15
SSW
15
SSW
15
SSW
15
SSE
20
S
20
S
15
S
10
S
5
SSE
15
S
20
S
10
SW
20
SW
20
SW
15
WSW
Wind State
off
off
glassy
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
2:20PM2.44m
2:32AM2.59m
2:59PM2.51m
3:15AM2.55m
3:40PM2.56m
Low Tide
8:47AM0.06m
8:57PM0.23m
9:20AM0.07m
9:36PM0.19m
9:54AM0.09m
10:19PM0.16m
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
light rain
light rain
light rain
mod rain
heavy rain
thunderstorm
mod rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:04
8:02
8:01
 mm
2
4
1
7
13
1
6
1
Temp °C
20
21
25
26
24
25
23
22
21
22
25
27
28
25
22
21
21
21
22
22
24
23
22
Feels °C
21
22
26
26
24
25
23
22
22
23
25
26
26
25
23
24
24
22
23
24
25
24
24
  • 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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