Costellos 48 hour detailed Surf Forecast

Lat Long: 42.95° N 70.78° W

Issued: 7 am 08 Jul 2026 (local time)

Forecast update in hr min

Today's Costellos sea temperature is

18.9° C

Costellos 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 Costellos today (08 Jul):

Morning surf: Morning surf (08 Jul, local time) - 4.5ft (1.3m), 8s period with ESE swell.
Afternoon surf: Afternoon surf (08 Jul, local time) - 4.5ft (1.3m), 8s period with ESE swell.
Evening surf: Evening surf (08 Jul, local time) - 4.5ft (1.3m), 8s period with ESE swell.

The current surf forecast for Costellos at 11AM is: 1.3m 8s primary swell from a East-southeast direction (forecast issued at 07:00am July 08). An open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (08 Jul)	4.5ft (1.3m)	8s
Afternoon (08 Jul)	4.5ft (1.3m)	8s
Evening (08 Jul)	4.5ft (1.3m)	8s

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

	Short Range Forecast Light rain (total 5mm), mostly falling on Fri night. Warm (max 32°C on Thu afternoon, min 17°C on Wed morning). Wind will be generally light.
	Wednesday 8							Thursday 9								Friday 10								Sat 11
	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	11 PM	2 AM
Rating (10 max)	2	0	1	0	0	1	1	1	1	1	1	1	0	0	0	1	1	1	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 7	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 7	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8
Wave Graph
kJ	207	204	204	196	202	207	159	123	120	104	94	99	107	90	87	68	68	53	48	33	32	31	19	19
Wind (km/h)	NNW	NNE	E	SE	SE	S	SW	WSW	WSW	W	WSW	SW	SW	SW	SW	WSW	NW	NNE	ESE	ESE	E	SSW	WNW	N
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-on	on	cross-on	cross-on	cross	cross-off	cross-off	off	off	off	cross-off	cross-off	cross-off	cross-off	off	glassy	glassy	on	cross-on	on	cross-off	cross-off	cross
High Tide		5:37AM2.85m				6:04PM3.15m				6:37AM2.85m				7:00PM3.26m				7:40AM2.89m				8:00PM3.40m
Low Tide				11:43AM0.81m				00:29AM0.72m				12:39PM0.80m				1:30AM0.59m				1:39PM0.76m


	5:11	—	—	—	—	—	—	—	5:11	—	—	—	—	—	—	—	5:13	—	—	—	—	—	—	5:13
	—	—	—	—	—	8:22	—	—	—	—	—	—	—	8:22	—	—	—	—	—	—	—	8:22	—	8:22
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	2	2	—
Temp °C	16	17	19	21	21	20	20	21	21	23	29	31	32	28	25	23	21	22	22	22	21	20	20	20
Feels °C	15	17	19	20	18	18	19	21	20	23	29	31	31	28	26	24	23	24	23	22	22	22	22	22
Swell 1 Height (m) Direction Period (s)	ESE 7	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 7	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	S 6	ESE 8	ESE 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8
kJ	207	204	204	196	202	207	159	123	120	104	94	99	107	90	87	49	68	53	48	33	32	31	19	19
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	S 4	—	SE 10	SE 9	SE 10	SE 10	SE 10	ESE 8	SE 10	S 5	S 4	SSE 4	SSE 4	SSE 4	SE 10	SE 10
kJ	—	—	—	—	—	—	—	—	4	—	4	3	4	4	4	68	4	17	6	3	2	1	14	14
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SE 10	—	SE 10	SE 10	SE 10	SE 10	SE 10	SE 4	SSE 6
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4	—	4	4	4	4	4	1	3
Wind waves Height (m) Direction Period (s)	NNE 3	N 3	NNW 3	—	—	SSE 2	S 3	S 4	SSW 4	SW 4	SSW 3	S 3	S 4	S 4	S 5	S 6	S 5	SSW 5	—	—	—	—	—	—
kJ	6	2	1	—	—	1	5	6	8	6	1	2	9	9	40	98	37	33	—	—	—	—	—	—
Nearest Offshore or Glassy	Costellos New Hampshire	Hampton Beach New Hampshire	Good Harbor Beach Massachusetts	Good Harbor Beach Massachusetts	Green Harbor Massachusetts	Salisbury Beach Massachusetts	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Fieldstone Massachusetts	Rye On the Rocks New Hampshire	Salisbury Beach Massachusetts	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Ditch Plains Long Island NY	Harvey Cedars New Jersey	Island Beach State Park New Jersey	Cupsogue Long Island NY	Lighthouse-Southside Rhode Island	Matunuck-The point Rhode Island
Rating (10 max)	2	2	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	0	5	39	39	98	14	0	0	0	0	0	0	92	4	14	0	0	0	232	458	443	289	186	186
Best forecast wave conditions in New Hampshire	Hampton Beach	Hampton Beach					The Wall	Hampton Beach	Hampton Beach	Hampton Beach	Hampton Beach	The Wall		Rye On the Rocks		Hampton Beach	Hampton Beach	Hampton Beach
Rating (10 max)	2	2					1	1	1	1	1	1		1		1	1	1
Best forecast wave conditions in United States	Swamis CAL - San Diego County	Del Mar Jetties CAL - San Diego County	Swamis CAL - San Diego County	Green Harbor Massachusetts	Green Harbor Massachusetts	Ballston Beach Massachusetts	Fluidgroove Reef Florida - North	Swamis CAL - San Diego County	Lincoln City Nelscott Reef Oregon North	Lincoln City Nelscott Reef Oregon North	Lincoln City Nelscott Reef Oregon North	Exiles CAL - LA County	Exiles CAL - LA County	North End Virginia	Fluidgroove Reef Florida - North	Lunada Bay CAL - LA County	Fluidgroove Reef Florida - North	Swamis CAL - San Diego County	Lunada Bay CAL - LA County	El Porto Beach CAL - LA County	Lunada Bay CAL - LA County	Lunada Bay CAL - LA County	Lunada Bay CAL - LA County	Lincoln City Nelscott Reef Oregon North
Rating (10 max)	3	4	3	2	1	2	1	3	3	3	3	2	2	1	1	2	1	3	1	2	1	1	1	2
Header Global	Trial Harbour Australia	Trial Harbour Australia	Papatowai New Zealand	Dinner Plates New Zealand	Lucky Point Philippines	Lucky Point Philippines	Lucky Point Philippines	Lucky Point Philippines	Papatowai New Zealand	Trial Harbour Australia	Baler - Lindy's Point Philippines	Boneyards South Africa	Boneyards South Africa	Kaifu Rivermouth Japan	Barbel Point South Africa	Boneyards South Africa	Papatowai New Zealand	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand
Rating (10 max)	7	6	6	7	9	9	9	8	6	6	6	5	6	6	5	5	6	7	8	8	8	5	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)

Latest Updates

Ben Mondy

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Costellos 48 hour detailed Surf Forecast

How big are the waves at Costellos today (08 Jul):

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