Costellos Surf Forecast

/ New Hampshire (9 breaks) / New Hampshire (9 breaks) /

USA (1297 breaks) / Lat Long: (42.95° N 70.78° W)

Surf Forecasts:

Costellos surfForecast / New Hampshire / USA

48hr Weather and Surf, issued 7 pm Tuesday 26 Aug 2025 EDT

Forecast update in hr min s Forecast update imminent

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

Today's Costellos sea temperature is 17.3° C
(Which is 1.4°C colder than average for this time of year)

How big are the waves at Costellos today?

The current surf forecast for Costellos at 2AM is: 0.4m 10s primary swell from a Southeast direction and 0.4m 6s secondary swell from a East-southeast direction (forecast issued at 07:00pm August 26). The wind direction is predicted to be offshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (27 Aug)	2.5ft (0.7m)	9s
Afternoon (27 Aug)	2.5ft (0.8m)	9s
Evening (27 Aug)	2.5ft (0.7m)	9s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Tuesday 26			Wednesday 27								Thursday 28								Friday 29
	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	1	1	1	1	1	1	1	0	1	1	1	1	1	0	0	0	0	0	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE	SE	ESE	SE	ESE	ESE	ESE	ESE	ESE	S	SSE	ESE	ESE	ESE	SSE
Period(s) (?)	7	7	10	10	10	9	9	9	9	9	9	9	9	9	9	8	8	8	5	5	8	7	7	4
Wave Graph (?)
Energy (?)	82	56	64	58	70	93	102	101	99	97	79	69	79	68	68	44	61	60	104	53	43	38	42	50
Wind (km/h)	WNW	W	W	W	WNW	WNW	WNW	SSW	S	WNW	WNW	WNW	W	WSW	S	SE	SE	SSE	SSW	SSW	SSW	WSW	S	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	off	off	off	cross- off	cross- off	cross- off	cross- off	cross	cross- off	cross- off	off	off	off	cross	cross- on	cross- on	cross	cross- off	cross- off	cross- off	cross- off	cross	cross
High Tide / height (m)					2:19AM 3.19				2:37PM 3.23				3:02AM 3.03				3:18PM 3.13				3:47AM 2.86
Low Tide / height (m)			8:09PM 0.51				8:26AM 0.61				8:52PM 0.60				9:05AM 0.76				9:37PM 0.71				9:47AM 0.92

	Tuesday 26			Wednesday 27								Thursday 28								Friday 29
Sunrise	-	-	-	-	-	6:01	-	-	-	-	-	-	-	6:01	-	-	-	-	-	-	-	6:03	-	-
Sunset	7:28	-	-	-	-	-	-	-	7:27	-	-	-	-	-	-	-	7:24	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	1	1
Temp. °C	24	21	19	16	16	16	20	21	21	20	18	17	16	16	21	21	20	21	19	18	17	16	18	20
Feels °C (?)	19	18	16	13	13	14	18	19	19	18	15	14	13	14	18	16	16	19	16	16	16	15	15	17

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 New Hampshire

Wind Update The wind is still offshore at Costellos (moderate winds from the W at BUOY-IOSN3 13 km from Costellos). 0.5m 7s swell from the SE with a 0.3m 11s groundswell from the ESE and a 0.3m 9s swell from the SE. 3 swells combining to make bigger set waves.
58 minutes ago Costellos

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Actual: 58 min ago

24 km/h

Offshore

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