Coastguard Beach Surf Forecast

/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /

USA (1297 breaks) / Lat Long: (41.83° N 69.95° W)

Surf Forecasts:

Coastguard Beach surfForecast / Massachusetts / USA

48hr Weather and Surf, issued 1 am Thursday 18 Sep 2025 EDT

Forecast update in hr min s Forecast update imminent

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

Today's Coastguard Beach sea temperature is 18.8° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at Coastguard Beach today?

The current surf forecast for Coastguard Beach at 4AM is: 0.6m 7s primary swell from a East-southeast direction and 0.1m 6s secondary swell from a South direction (forecast issued at 01:00am September 18). The wind direction is predicted to be onshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (18 Sep)	2ft (0.6m)	6s
Afternoon (18 Sep)	1.5ft (0.5m)	7s
Evening (18 Sep)	1.5ft (0.5m)	7s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Thursday 18								Friday 19								Saturday 20
	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	5 PM	8 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	E	ESE	ESE	ESE	ESE	ESE	ESE	ESE	NNE	NNE	NNE	NE	NE	NE	ENE
Period(s) (?)	7	7	7	6	6	7	7	7	7	7	7	7	6	6	7	7	7	4	5	6	6	5	5	5
Wave Graph (?)
kJ (?)	48	47	34	32	32	26	26	27	27	24	15	15	14	14	9	9	9	29	61	53	44	25	19	15
Wind (km/h)	E	E	E	ENE	NE	N	NW	S	SW	WSW	WNW	NW	NNW	NE	E	ESE	ENE	NNE	NE	NE	ENE	NE	ENE	E
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	on	on	cross- on	cross- on	cross	cross- off	cross	cross- off	off	off	cross- off	cross- off	cross- on	on	on	glass	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	on
High Tide / height (m)	8:46PM 2.81				9:29AM 2.58				9:43PM 2.83				10:19AM 2.67				10:34PM 2.86					11:03AM 2.75
Low Tide / height (m)			3:15AM 0.45				3:30PM 0.66				4:06AM 0.42				4:22PM 0.57				4:52AM 0.40					5:08PM 0.48

		Thursday 18								Friday 19								Saturday 20
Sunrise	-	-	-	6:22	-	-	-	-	-	-	-	6:22	-	-	-	-	-	-	-	6:24	-	-	-	-
Sunset	-	-	-	-	-	-	6:44	-	-	-	-	-	-	-	6:43	-	-	-	-	-	-	-	6:40	-

Rain (mm)	-	2	4	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	18	18	18	18	19	19	19	20	20	19	19	19	19	19	18	18	19	17	16	15	15	15	14	14
Feels °C (?)	17	18	18	19	21	21	20	21	20	17	16	16	16	17	17	17	20	10	9	9	10	11	10	10

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 Massachusetts

Wind Update Continuing clean conditions at Coastguard Beach (light winds from the N at Chatham Airport 17 km from Coastguard Beach). 0.8m 7s swell from the ESE with a 0.5m 7s swell, also from the ESE and a 0.2m 6s windswell, also from the SSW. 3 swells combining to make bigger set waves.
1 hour 25 minutes ago Coastguard Beach

Expand

View all

17 km away, 1 h 25 min ago

7 km/h

0.0

18.8

Air / Water (°C)

Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Coastguard Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.