Green Harbor 48 hour detailed Surf Forecast

Lat Long: 42.08° N 70.64° W

Issued: 1 pm 29 Jul 2026 (local time)

Forecast update in hr min

Today's Green Harbor sea temperature is

18.9° C

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

Surf Forecasts:

	Short Range Forecast Moderate rain (total 15mm), heaviest on Wed afternoon. Warm (max 26°C on Sat morning, min 17°C on Thu afternoon). Winds decreasing (fresh winds from the ESE on Wed afternoon, light winds from the SSW by Sat morning).
	Wed 29					Thursday 30								Friday 31
	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
Rating (10 max)	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 5	E 5	E 6	E 6	E 6	E 6	E 6	ENE 6	ENE 6	ESE 9	ENE 6	SE 9	SE 9	ESE 10	SE 10	ESE 10	NE 6	SE 9	NE 6	NE 5	NE 5
Wave Graph
kJ	0	0	0	0	0	0	40	97	85	8	45	20	21	9	23	19	52	21	38	18	9
Wind (km/h)	ESE	ESE	ESE	ESE	ENE	ENE	ENE	ENE	NE	NNE	NNE	NNE	NNE	N	NNW	N	N	NE	E	S	SSW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	off	off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	off	cross-off	cross-on	on
High Tide		12:16PM2.46m				00:21AM2.87m				12:52PM2.52m				00:58AM2.90m				1:28PM2.60m
Low Tide				6:05PM0.48m				6:40AM0.19m				6:44PM0.42m				7:17AM0.15m				7:24PM0.36m


	—	—	—	—	—	—	5:33	—	—	—	—	—	—	—	5:33	—	—	—	—	—	—
	—	—	—	8:05	—	—	—	—	—	—	—	8:04	—	—	—	—	—	—	—	8:01	—
mm	3	5	2	2	—	1	—	1	1	2	1	—	—	—	—	—	—	—	—	—	—
Temp °C	20	20	20	20	19	19	19	19	19	18	17	17	18	18	17	18	19	20	20	21	20
Feels °C	17	17	17	18	18	18	18	18	18	16	13	13	15	16	15	17	17	19	19	21	19
Swell 1 Height (m) Direction Period (s)	S 5	S 6	S 6	S 6	S 7	S 7	E 6	ENE 6	ENE 6	ESE 9	ENE 6	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	NE 6	ESE 10	NE 6	NE 5	NE 5
kJ	2	6	7	12	14	15	40	97	85	8	45	9	9	9	9	19	52	9	38	18	9
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	S 7	ESE 10	ESE 9	S 8	ESE 9	SE 9	SE 9	S 8	SE 10	S 8	ESE 10	SE 9	ESE 10	E 6	E 6
kJ	—	—	—	—	—	—	17	9	8	10	8	20	21	11	23	5	9	21	9	6	6
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	ESE 7	S 7	S 7	NNE 7	ESE 9	S 8	S 8	—	S 8	S 10	—	S 9	S 8	ESE 10	ESE 10
kJ	—	—	—	—	—	—	5	4	4	4	7	12	11	—	5	2	—	6	5	9	9
Wind waves Height (m) Direction Period (s)	E 5	E 5	E 6	E 6	E 6	E 6	E 6	—	—	NE 6	NNE 6	NE 6	NE 6	NE 6	NE 6	NE 6	—	NE 6	—	—	—
kJ	47	92	123	108	92	92	98	—	—	86	69	104	92	77	59	59	—	44	—	—	—
Nearest Offshore or Glassy	Jones Beach State Park Long Island NY	Gilgo Long Island NY	Panic Point (Weekapaug) Rhode Island	Indian Wells Long Island NY	Cutty Wow Reef Rhode Island	Horseneck Beach Massachusetts	Horseneck Beach Massachusetts	Green Harbor Massachusetts	Horseneck Beach Massachusetts	Nauset Beach Massachusetts	Sachuest Beach (2nd Beach) Rhode Island	Eastons Beach (1st Beach) Rhode Island	Eastons Beach (1st Beach) Rhode Island	Winthrop Jetty Massachusetts	Winthrop Jetty Massachusetts	Lynne Beach Massachusetts	Long Beach Massachusetts	Winthrop Jetty Massachusetts	Madaket Massachusetts	Longnook Beach Massachusetts	Longnook Beach Massachusetts
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	295	281	124	174	77	72	72	0	72	65	83	85	85	39	39	49	61	39	96	52	52
Best forecast wave conditions in Massachusetts						Horseneck Beach	Horseneck Beach	Horseneck Beach	Horseneck Beach	Horseneck Beach				Deveraux Beach	Plum Island	Prestons	Long Beach	Winthrop Jetty	Madaket	Lecount Hollow	Ballston Beach
Rating (10 max)						1	1	1	1	1				1	1	1	1	1	1	1	1
Best forecast wave conditions in United States	Lincoln City Nelscott Reef Oregon North	El Porto Beach CAL - LA County	Chincoteague Virginia	Outside Ponquogue Long Island NY	Assateague Maryland	Trestles (Uppers) CAL - Orange County	Trestles (Uppers) CAL - Orange County	Tijuana Sloughs Baja Norte	The Wedge CAL - Orange County	Georgica Pond Long Island NY	Assateague Maryland	Assateague Maryland	Trestles (Uppers) CAL - Orange County	Malibu CAL - LA County	Tijuana Sloughs Baja Norte	Malibu CAL - LA County	Trestles (Uppers) CAL - Orange County	Georgica Pond Long Island NY	Deadman's CAL - Ventura	Costellos New Hampshire	Swamis CAL - San Diego County
Rating (10 max)	3	3	1	1	1	4	4	4	3	2	1	1	3	3	3	3	3	1	2	1	3
Header Global	Ahijedero Mexico	Left Point Australia	Bancoora Australia	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Asu Indonesia	Asu Indonesia	Arrawarra Australia	Asu Indonesia	Asu Indonesia	Nine Mile New Zealand	Nine Mile New Zealand	Fox River New Zealand	Sky Williams New Zealand	Trial Harbour Australia	Easter Reef Australia	Easter Reef Australia
Rating (10 max)	4	5	4	4	4	4	4	4	4	4	4	4	4	4	9	6	5	7	6	5	5

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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Green Harbor 48 hour detailed Surf Forecast

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