Plum Island surf break

Plum Island surfForecast / Massachusetts / USA

information circle12 Day Weather and Surf, issued 1 am Friday 11 Jul 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Plum Island sea temperature is
19.3° C
(Which is 1.2°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Plum Island this week:

The surf forecast for Plum Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 14) at 11PM. The primary swell is predicted to be 0.9m and 4s period with a secondary swell of 0.7m and 4s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Plum Island in the next 12 days are 0.9m 6s and forecast to arrive on Wednesday (Jul 16) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Tuesday (Jul 15) at 5AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 14th Jul)3ft (0.9m) 4s
Best Surf11PM (Mon 14th Jul)3ft (0.9m) 4s
Most Powerful 8PM (Wed 16th Jul)3ft (0.9m) 6s

Table - best surf conditions forecast for Plum Island over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.2
ESE
0.3
SE
0.2
ESE
0.3
SE
0.3
SE
0.3
SE
0.6
SE
0.9
SSE
0.9
SSE
0.6
SSE
0.7
SE
0.7
SE
0.4
SE
0.4
SE
0.5
S
0.3
SE
0.9
S
0.6
SSE
0.5
S
0.5
SSE
0.8
SSE
0.5
S
0.9
SSE
0.8
SSE
0.3
SSE
0.4
SE
0.3
SE
0.4
SE
0.3
SE
0.9
SSE
0.6
SSE
0.3
SE
0.3
SE
1.2
NNE
0.8
NE
0.5
E
Period(s) (?)111110101010444444664655645556668886899555
Wave
Graph
(?)Metric surfscale
Energy (?)162924352530254137242423221823154429291636255260182321262059511826664018
Wind
(km/h)
10
ESE
20
SSE
5
S
15
SE
15
SE
10
SSE
15
SSE
20
SSE
15
SSW
15
S
15
SSE
10
WSW
5
E
20
SSE
15
SW
10
SSW
20
SSW
15
SW
10
S
20
SSE
10
SSW
20
SSW
15
SW
10
W
20
NE
5
ESE
5
WNW
5
SE
20
SSE
15
SW
10
W
30
NW
15
WNW
5
ESE
10
S
0
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
crosscrossoffglasscross-
on
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross-
off
cross-
off
cross-
off
offcross-
on
cross-
on
cross-
off
cross-
on
crosscross-
off
offcross-
off
offglasscross-
off
glass
High Tide
/ height (m)
12:56PM
2.24
1:02AM
2.66
1:37PM
2.33
1:45AM
2.71
2:19PM
2.42
2:29AM
2.72
3:02PM
2.51
3:15AM
2.70
3:48PM
2.58
4:04AM
2.64
4:36PM
2.63
4:56AM
2.54
5:27PM
2.66
5:52AM
2.43
6:21PM
2.69
6:51AM
2.33
7:19PM
2.70
7:55AM
2.25
8:19PM
2.72
9:00AM
2.23
9:21PM
2.76
10:05AM
2.24
10:22PM
2.80
Low Tide
/ height (m)
7:29PM
0.39
8:06AM
0.02
8:09PM
0.35
8:44AM
-0.01
8:50PM
0.30
9:23AM
-0.02
9:35PM
0.24
10:04AM
-0.02
10:24PM
0.19
10:48AM
-0.00
11:18PM
0.14
11:37AM
0.04
12:17AM
0.09
12:31PM
0.10
1:20AM
0.05
1:30PM
0.16
2:25AM
-0.01
2:33PM
0.20
3:28AM
-0.06
3:36PM
0.20
4:30AM
-0.12
4:38PM
0.18
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Sunrise5:13--5:15--5:16--5:16--5:16--5:18--5:18--5:20--5:20--5:22--5:22--5:24--
Sunset-8:22--8:21--8:21--8:20--8:19--8:19--8:17--8:16--8:16--8:15--8:15--8:14-
part cloudpart cloudpart cloudpart cloudclearclearpart cloudpart cloudclearclearlight rainrain showersclearclearclearclearclearclearclearpart cloudthunderstorm part cloudrain showersthunderstorm thunderstorm part cloudpart cloudclearpart cloudclearclearcloudclearpart cloudcloudmod rain
Rain (mm)
----------12--------2-131----------6
Temp. °C192121212118212222252725262827303230293130303030232123232425283123192120
Feels °C (?)202023212118202020242627282829313231313132302932252224232223272819171718

Short Range Forecast: Mostly dry. Warm (max 22°C on Sun afternoon, min 17°C on Fri morning). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Mon afternoon. Warm (max 32°C on Wed afternoon, min 20°C on Mon morning). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 7mm), mostly falling on Fri night. Warm (max 31°C on Thu afternoon, min 20°C on Sat afternoon). Wind will be generally light.

Long Range Forecast: Light rain (total 7mm), mostly falling on Tue night. Warm (max 31°C on Mon afternoon, min 14°C on Tue night). Winds decreasing (fresh winds from the NW on Mon afternoon, calm by Tue night).

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Plum Island Surf forecast

The above surf forecast table for Plum Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Plum Island can be found by selecting the local surf guide option on the grey menu. Our Plum Island surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Plum Island) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Plum Island may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Plum Island is 6 km (4 miles) from Newburyport. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Newburyport. Newburyport has rooms for a wide range of budgets as well as car hire and transport links.

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