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

48hr Weather and Surf, issued 1 pm Sunday 31 Aug 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 17.5° C
(Which is 1.0°C colder than average for this time of year)

How big are the waves at Plum Island today?

The current surf forecast for Plum Island at 6PM is: 0.4m 8s primary swell from a Southeast direction and 0.4m 7s secondary swell from a East direction (forecast issued at 01:00pm August 31). The wind direction is predicted to be cross-shore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (31 Aug)	1.5ft (0.5m)	7s
Afternoon (31 Aug)	1.5ft (0.4m)	8s
Evening (31 Aug)	1.5ft (0.5m)	8s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Sunday 31					Monday 01								Tuesday 02								Wednesday 03
	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	2 AM	5 AM	8 AM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE	SE	SE	SE	SE	SE	ESE
Period(s) (?)	8	8	8	8	7	7	7	7	7	7	7	9	9	9	9	9	6	8	7	7	8	8	8	8
Wave Graph (?)
Energy (?)	41	47	44	43	41	34	30	37	37	27	26	22	24	19	23	18	27	44	57	77	113	133	136	153
Wind (km/h)	NE	ESE	SSE	S	WSW	W	N	NNE	NE	ENE	ENE	E	ENE	NNW	N	NNE	NE	ENE	E	ESE	SSW	W	WSW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	on	cross- on	cross	cross- off	off	cross- off	cross	cross- on	cross- on	on	on	glass	cross- off	cross	cross	cross- on	cross- on	on	on	glass	off	cross- off	cross- off
High Tide / height (m)				6:08PM 2.19				6:45AM 1.91				7:03PM 2.20				7:44AM 1.91				8:00PM 2.26
Low Tide / height (m)		12:47PM 0.62				1:34AM 0.42				1:44PM 0.66					2:31AM 0.43				2:40PM 0.66				3:25AM 0.38

	Sunday 31					Monday 01								Tuesday 02								Wednesday 03
Sunrise	-	-	-	-	-	-	-	6:07	-	-	-	-	-	-	-	6:07	-	-	-	-	-	-	-	6:09
Sunset	-	-	7:20	-	-	-	-	-	-	-	7:17	-	-	-	-	-	-	-	7:15	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	18	20	21	19	19	19	18	17	19	19	19	19	18	17	17	16	18	18	18	17	16	15	14	14
Feels °C (?)	16	17	18	16	17	17	16	15	17	16	18	19	19	17	16	15	16	16	17	16	16	14	13	13

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). 0.5m 8s swell from the ESE with a 0.1m 2s local chop from the N. 2 swells combining to make bigger set waves.
3 hours 29 minutes ago Plum Island

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3 h 29 min ago

0 km/h

Clean

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