Plum Island Surf Forecast

/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /

USA (1297 breaks) / Lat Long: (42.80° N 70.81° W)

Surf Forecasts:

Plum Island surfForecast / Massachusetts / USA

12 Day Weather and Surf, issued 7 am Wednesday 03 Sep 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 17.2° C
(Which is 1.0°C colder than average 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 Wednesday (Sep 03) at 11PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.6m and 4s 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 1.7m 6s and forecast to arrive on Friday (Sep 05) 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 0.7m 4s period and expected on Friday (Sep 05) at 5AM.

Wave Type	Time (EDT) & Date	Wave Height & Period
Next good surf (1 star+)	11PM (Wed 3rd Sep)	2.5ft (0.8m) 7s
Best Surf	11PM (Sat 6th Sep)	4.5ft (1.3m) 6s
Most Powerful	8PM (Fri 5th Sep)	5.5ft (1.7m) 6s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 26°C on Fri afternoon, min 16°C on Wed morning). Wind will be generally light.									Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Sat night. Warm (max 30°C on Sat afternoon, min 16°C on Sat night). Winds decreasing (fresh winds from the S on Sat afternoon, calm by Mon night).
	Wednesday 03			Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	1	0	0	1	0	0	0	0	0	1	0	1	0	0	0	0	0	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	SE	ESE	E	ESE	ESE	SSE	SSE	SSE	SSE	SSE	SE	SE	SE	SE	SE	SE	SE	SE	SE
Period(s) (?)	8	8	7	8	8	8	7	6	6	5	6	5	9	7	8	8	9	8	8	8	8
Wave Graph (?)
Energy (?)	78	70	95	70	45	66	58	208	122	95	182	64	37	64	32	24	25	29	30	40	60
Wind (km/h)	SSE	SE	SSW	SSE	SE	SSW	SSW	S	SSW	S	S	W	WNW	W	NW	NE	ESE	NE	SSE	SSE	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross- on	cross- off	cross	cross- on	cross- off	cross- off	cross	cross- off	cross	cross- off	off	cross- off	off	cross- off	cross- on	cross- on	cross- on	cross- on	cross- on	cross- off
High Tide / height (m)	8:42AM 1.98		8:57PM 2.35	9:36AM 2.10		9:50PM 2.47	10:25AM 2.25		10:39PM 2.60	11:11AM 2.41		11:26PM 2.71	11:55AM 2.58		12:12AM 2.79	12:38PM 2.72		12:58AM 2.81	1:22PM 2.83		1:45AM 2.78
Low Tide / height (m)		3:33PM 0.59	4:14AM 0.30		4:22PM 0.49	4:58AM 0.19		5:07PM 0.35		5:40AM 0.07	5:50PM 0.20		6:19AM -0.05	6:33PM 0.03		6:59AM -0.13	7:17PM -0.11		7:39AM -0.18		8:02PM -0.21

	Wednesday 03			Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09
Sunrise	6:09	-	-	6:09	-	-	6:11	-	-	6:11	-	-	6:13	-	-	6:13	-	-	6:15	-	-
Sunset	-	7:15	-	-	7:13	-	-	7:10	-	-	7:08	-	-	7:07	-	-	7:06	-	-	7:04	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	14	-	-	-	-	-	-	-	-	-
Temp. °C	21	21	18	21	22	21	24	26	24	27	30	19	21	24	21	19	18	17	18	20	18
Feels °C (?)	20	17	16	19	18	18	23	25	22	26	26	20	17	21	19	17	14	16	17	17	15

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Massachusetts

Wind Update Continuing clean conditions at Plum Island (calm at Ipswich 12 km from Plum Island). 0.8m 8s swell from the ESE to make surfable waves.
1 hour 41 minutes ago Plum Island

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1 h 41 min ago

0 km/h

Clean

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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.

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.