Plum Island Surf Break

Lat Long: 42.80° N 70.81° W

Plum Island 48 hour detailed Surf Forecast

Issued: 7 am 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Plum Island sea temperature is
18.9° C
0.8° 

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 (07 Aug):

  • Morning surf: Morning surf (07 Aug, local time) - 1.5ft (0.4m), 7s period with SSE swell.
  • Afternoon surf: Afternoon surf (07 Aug, local time) - 1.5ft (0.4m), 7s period with SE swell.
  • Evening surf: Evening surf (07 Aug, local time) - 1ft (0.3m), 8s period with SE swell.

The current surf forecast for Plum Island at 2PM is: 0.4m 7s primary swell from a Southeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 07:00am August 07). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (07 Aug)1.5ft (0.4m)7s
Afternoon (07 Aug)1.5ft (0.4m)7s
Evening (07 Aug)1ft (0.3m)8s

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


Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 32°C on Sun afternoon, min 22°C on Sat morning). Wind will be generally light.

Friday
7
Saturday
8
Sunday
9
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
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)
0.4
SSE
5
0.4
SSE
7
0.4
SE
7
0.4
SE
7
0.4
SE
7
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.4
SSE
4
0.3
SSE
5
0.3
SSE
5
0.2
SSE
7
0.2
SSE
7
0.2
SSE
7
0.1
E
9
0.1
E
10
Wave Graph
Metric surfscale
Energy kJ
9
18
14
14
14
9
10
10
10
10
9
9
9
9
9
6
5
5
5
5
5
2
2
Wind (km/h)
10
WSW
10
WNW
5
N
10
ESE
10
SE
10
SSE
5
WNW
10
WNW
10
NW
0
S
0
ESE
10
ENE
10
E
10
E
10
SSW
5
WSW
5
WSW
5
W
5
W
5
WSW
15
WNW
15
W
10
WNW
Wind State
off
cross-off
cross
cross-on
cross-on
cross
glassy
off
cross-off
glassy
glassy
cross-on
on
on
cross-off
off
off
off
off
glassy
off
off
off
High Tide
6:41AM2.25m
7:06PM2.67m
7:45AM2.22m
8:08PM2.71m
8:51AM2.23m
9:13PM2.77m
Low Tide
1:13PM0.30m
2:14AM0.08m
2:20PM0.32m
3:21AM0.02m
3:28PM0.28m
clear
clear
clear
part cloud
part cloud
clear
clear
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:41
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:54
7:53
 mm
1
Temp °C
24
25
29
29
30
29
27
24
24
22
24
25
24
23
22
23
22
23
29
32
32
29
25
Feels °C
27
28
32
30
31
31
30
26
26
25
28
27
26
26
24
26
24
26
31
33
30
28
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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