Costellos 48 hour detailed Surf Forecast

Lat Long: 42.95° N 70.78° W

Issued: 7 pm 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 (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 Costellos at 3AM is: 1.1m 8s primary swell from a East-southeast direction (forecast issued at 07:00pm July 08). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be 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 Costellos. (Swell directed towards the surf break)

	Short Range Forecast Light rain (total 4mm), mostly falling on Fri night. Warm (max 31°C on Thu afternoon, min 19°C on Thu night). 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	1	1	0	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	ESE 8	ESE 8	E 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8	ESE 8	SE 10	SE 10
Wave Graph
kJ	202	207	159	165	128	99	105	107	107	85	85	68	73	55	50	49	33	33	30	19	19	19	15	15
Wind (km/h)	SE	S	SSW	WSW	WSW	W	WSW	SSW	SSW	SW	SW	WNW	N	NNE	E	ESE	SE	S	WNW	N	N	N	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-off	cross-off	cross-off	off	cross	glassy	on	cross-on	cross-on	cross	off	cross-off	cross	cross	cross-on	on
High Tide		6:04PM3.15m				6:37AM2.85m				7:00PM3.26m				7:40AM2.89m				8:00PM3.40m					8:43AM2.99m
Low Tide				00:29AM0.72m				12:39PM0.80m				1:30AM0.59m				1:39PM0.76m					2:32AM0.44m


	—	—	—	—	5:11	—	—	—	—	—	—	—	5:13	—	—	—	—	—	—	—	5:13	—	—	—
	—	8:22	—	—	—	—	—	—	—	8:22	—	—	—	—	—	—	—	8:22	—	—	—	—	—	8:22
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	2	1	—	—	—	—	—
Temp °C	24	21	21	21	21	23	29	31	29	28	24	22	19	20	23	23	21	20	21	20	20	19	20	21
Feels °C	22	19	20	20	20	23	28	31	28	28	25	24	20	22	24	23	22	21	23	21	20	18	18	19
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	S 6	S 5	ESE 8	E 8	E 8	E 8	E 8	E 8	ESE 8	ESE 8	ESE 8	E 8	NE 4
kJ	202	207	159	165	128	99	105	107	107	85	85	50	27	55	50	49	33	33	30	19	19	19	10	6
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	SE 10	SE 10	ESE 8	ESE 8	S 5	SSE 5	SSE 4	SSE 4	SSE 4	SE 10	SE 10	SE 10	SE 10	SE 10	E 8
kJ	—	—	—	—	—	—	—	—	—	4	4	68	73	13	7	4	2	2	14	14	16	16	15	10
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SSE 6	SSE 6	SSE 6	SSE 6	SE 6	SE 10
kJ	—	—	—	—	—	—	—	—	—	—	—	4	4	4	4	4	4	4	3	3	3	3	1	15
Wind waves Height (m) Direction Period (s)	—	SSE 2	S 3	S 3	SSW 3	SW 3	SSW 3	SSW 2	S 3	S 4	S 5	S 6	WSW 3	—	—	—	—	—	—	—	NNE 2	NE 3	NE 4	—
kJ	—	1	3	5	4	2	1	1	5	7	47	92	2	—	—	—	—	—	—	—	1	6	11	—
Nearest Offshore or Glassy	Winthrop Jetty Massachusetts	Fieldstone Massachusetts	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Costellos New Hampshire	Winthrop Jetty Massachusetts	Ogunquit Beach Maine	Costellos New Hampshire	Costellos New Hampshire	Hampton Beach New Hampshire	Costellos New Hampshire	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)	69	92	0	0	0	0	0	0	69	38	0	0	5	0	38	227	251	38	38	38	186	186	186	186
Best forecast wave conditions in New Hampshire			The Wall	Hampton Beach	Hampton Beach	Hampton Beach	Hampton Beach	The Wall			The Wall	Hampton Beach	Hampton Beach	Hampton Beach
Rating (10 max)			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

Ben Mondy

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Costellos 48 hour detailed Surf Forecast

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

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