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 am Sunday 19 Oct 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 13.8° C
(Which is slightly warmer than usual)

How big are the waves at Plum Island today?

The current surf forecast for Plum Island at 7AM is: 1.2m 10s primary swell from a East direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 01:00am October 19). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (EDT) & Date	Wave Height	Wave Period
Morning (19 Oct)	4ft (1.2m)	10s
Afternoon (19 Oct)	3ft (0.9m)	10s
Evening (19 Oct)	2.5ft (0.7m)	9s

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 19								Monday 20								Tuesday 21
	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	11 AM	2 PM	5 PM	8 PM
Rating (10 max)	2	2	2	2	1	0	0	0	0	0	0	0	0	2	1	1	0	1	1	1	1	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	E	E	E	E	E	E	E	E	E	E	SSE	SE	SE	S	SSE	SE	SE	E	E	E	E	E	E	E
Period(s) (?)	10	10	11	10	10	10	10	10	9	9	5	6	7	7	7	7	7	8	10	10	10	10	10	10
Wave Graph (?)
kJ (?)	408	416	372	305	198	158	120	115	85	81	133	260	453	341	229	135	88	59	31	31	31	31	31	17
Wind (km/h)	S	SW	SSW	SSW	S	SSE	SSE	SSE	SSE	SSE	SSE	SE	SSE	SSW	SW	SW	WSW	WSW	W	WSW	W	WSW	SSW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross	cross- on	cross	cross	cross	cross- on	cross- on	cross- on	cross- on	cross- off	cross- off	cross- off	cross- off	off	off	off	off	off	cross- off	cross- off
High Tide / height (m)	10:52PM 2.44					11:14AM 2.44				11:35PM 2.41				11:49AM 2.47				12:13AM 2.37				12:21PM 2.47
Low Tide / height (m)				5:22AM 0.05				5:45PM 0.01				6:04AM 0.07				6:28PM -0.04				6:44AM 0.11				7:08PM -0.06

		Sunday 19								Monday 20								Tuesday 21
Sunrise	-	-	-	7:00	-	-	-	-	-	-	-	7:01	-	-	-	-	-	-	-	7:03	-	-	-	-
Sunset	-	-	-	-	-	-	5:54	-	-	-	-	-	-	-	5:52	-	-	-	-	-	-	-	5:52	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	2	9	-	-	-	-	-	-	-	-	-	-
Temp. °C	12	12	11	11	14	16	17	14	14	14	15	16	16	16	16	14	12	12	12	10	14	17	18	16
Feels °C (?)	9	9	8	8	11	12	13	10	11	10	11	11	9	13	12	10	8	8	8	5	10	13	15	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 Joppa wx 5 km from Plum Island). A 1.1m groundswell from the E
1 hour 10 minutes ago Plum Island

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1 h 10 min ago

0 km/h

Clean

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