Plum Island 48 hour detailed Surf Forecast

Lat Long: 42.80° N 70.81° W

Issued: 7 pm 08 Jul 2026 (local time)

Forecast update in hr min

Today's Plum Island sea temperature is

19.2° C

Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Plum Island today (09 Jul):

Morning surf: Morning surf (09 Jul, local time) - 3ft (0.9m), 8s period with ESE swell.
Afternoon surf: Afternoon surf (09 Jul, local time) - 3ft (0.9m), 8s period with ESE swell.
Evening surf: Evening surf (09 Jul, local time) - 2.5ft (0.8m), 8s period with ESE swell.

The current surf forecast for Plum Island at 1AM is: 1.1m 8s primary swell from a East-southeast direction (forecast issued at 07:00pm July 08). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (09 Jul)	3ft (0.9m)	8s
Afternoon (09 Jul)	3ft (0.9m)	8s
Evening (09 Jul)	2.5ft (0.8m)	8s

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

	Short Range Forecast Light rain (total 3mm), mostly falling on Thu night. Warm (max 31°C on Thu afternoon, min 19°C on Sat morning). Wind will be generally light.
	Wed 8			Thursday 9								Friday 10								Sat 11
	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	11 AM	2 PM
Rating (10 max)	0	0	1	1	1	1	1	1	0	0	0	1	1	1	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	E 8	E 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8	E 8	SE 10	SE 10	SE 10
Wave Graph
kJ	221	183	151	147	120	94	96	104	104	83	83	68	68	50	50	48	33	32	19	19	18	17	16	15
Wind (km/h)	SE	S	SSW	WSW	WSW	W	W	SW	S	SW	SW	WSW	NNW	NNE	ENE	ESE	SE	SE	WNW	N	NNE	NNE	NE	ENE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross	cross-off	cross-off	off	off	off	cross-off	cross	cross-off	cross-off	cross-off	cross-off	glassy	cross-on	on	cross-on	cross-on	off	cross	cross	cross	cross-on	cross-on
High Tide		6:36PM2.61m				7:04AM2.31m				7:30PM2.68m					8:04AM2.28m				8:28PM2.76m				9:06AM2.29m
Low Tide				1:30AM0.16m				1:36PM0.25m					2:31AM0.07m				2:36PM0.25m				3:34AM-0.03m


	—	—	—	—	5:13	—	—	—	—	—	—	—	5:13	—	—	—	—	—	—	—	5:13	—	—	—
	—	8:22	—	—	—	—	—	—	—	8:22	—	—	—	—	—	—	—	8:22	—	—	—	—	—	8:22
mm	—	—	—	—	—	—	—	—	—	—	1	—	—	—	—	—	—	1	1	—	—	—	—	—
Temp °C	24	21	21	21	21	23	29	31	28	27	24	22	20	21	22	22	21	20	21	20	20	19	19	19
Feels °C	22	19	20	20	20	23	29	31	28	26	25	24	22	23	23	22	22	22	23	21	20	18	17	17
Swell 1 Height (m) Direction Period (s)	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	E 8	E 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8	E 8	E 7	E 7	E 8
kJ	221	183	151	147	120	94	96	104	104	83	83	68	68	50	50	48	33	32	19	19	18	17	10	10
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	SE 10	SE 10	SE 10	S 5	S 5	S 5	SSE 4	SSE 4	SSE 4	ESE 10	SE 10	ESE 10	SE 10	SE 10	SE 10
kJ	—	—	—	—	—	—	—	—	—	4	4	4	16	10	7	4	2	2	10	15	10	16	16	15
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	SE 10	SE 10	SE 10	SE 10	SE 10	ESE 10	SSE 6	SSE 6	SSE 7	SSE 6	SE 6	SE 6
kJ	—	—	—	—	—	—	—	—	—	—	—	—	4	4	4	4	4	9	3	3	4	3	1	1
Wind waves Height (m) Direction Period (s)	—	SSE 2	S 3	SSW 3	SW 3	SW 3	SW 3	SSW 2	S 3	S 4	S 5	S 5	WSW 3	WSW 3	—	—	—	—	—	—	NNE 2	NNE 4	NE 4	NE 4
kJ	—	1	4	4	3	2	1	1	2	12	53	42	2	1	—	—	—	—	—	—	1	8	14	11
Nearest Offshore or Glassy	Winthrop Jetty Massachusetts	Fieldstone Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Winthrop Jetty Massachusetts	Ogunquit Beach Maine	Seabrook Beach New Hampshire	Plum Island Massachusetts	Plum Island Massachusetts	Plum Island Massachusetts	Ogunquit Beach Maine	Turtle Cove Long Island NY	Georgica (East Hampton) Long Island NY	Ogunquit Beach Maine	Ogunquit Beach Maine	Ogunquit Beach Maine	K38 and 39 Rhode Island	K38 and 39 Rhode Island	Lighthouse-Southside Rhode Island	Lighthouse-Southside Rhode Island
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	52	75	0	0	0	0	0	0	52	54	9	0	0	0	54	211	235	54	54	54	169	169	170	170
Best forecast wave conditions in Massachusetts	Lecount Hollow	Lecount Hollow	Ballston Beach	Ballston Beach	Ballston Beach	Ballston Beach	Ballston Beach	Ballston Beach	Winthrop Jetty	Brant Rock	Fieldstone	Salisbury Beach	Ballston Beach	Ballston Beach							Madaket	Madaket
Rating (10 max)	2	2	1	1	1	1	1	1	1	1	1	1	1	1							1	1
Best forecast wave conditions in United States	Lecount Hollow Massachusetts	Lecount Hollow Massachusetts	Fluidgroove Reef Florida - North	Trestles (Uppers) CAL - Orange County	Lincoln City Nelscott Reef Oregon North	Lincoln City Nelscott Reef Oregon North	Trestles (Uppers) CAL - Orange County	Fort Canby A Jetty Washington	Exiles CAL - LA County	Chincoteague Virginia	Fluidgroove Reef Florida - North	Lunada Bay CAL - LA County	Lunada Bay CAL - LA County	Trestles (Uppers) CAL - Orange County	Lunada Bay CAL - LA County	Chincoteague Virginia	Lunada Bay CAL - LA County	Fluidgroove Reef Florida - North	Fluidgroove Reef Florida - North	Lincoln City Nelscott Reef Oregon North	Swamis CAL - San Diego County	The Wedge CAL - Orange County	Lincoln City Nelscott Reef Oregon North	Long Beach Peninsula Washington
Rating (10 max)	2	2	1	3	3	3	3	3	2	1	1	2	2	3	1	1	1	1	1	2	2	2	3	3
Header Global	Lucky Point Philippines	Lucky Point Philippines	Lucky Point Philippines	Haga-Haga South Africa	Papatowai New Zealand	Trial Harbour Australia	Trial Harbour Australia	Weld Road New Zealand	Boneyards South Africa	Barbel Point South Africa	Barbel Point South Africa	Barbel Point South Africa	Papatowai New Zealand	Papatowai New Zealand	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Supertubes Australia	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan
Rating (10 max)	9	9	9	7	6	6	6	6	6	5	5	5	6	5	8	8	8	5	5	5	4	5	7	6

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

Latest Updates

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Plum Island 48 hour detailed Surf Forecast

How big are the waves at Plum Island today (09 Jul):

Short Range Forecast

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