Castlerock Surf Forecast

/ Londonderry (4 surf breaks) /

Ireland (149 surf breaks) / Lat Long: (55.17° N 6.78° W)

Surf Forecasts:

Castlerock surfForecast / Londonderry / Ireland

48hr Weather and Surf, issued 5 pm Sunday 16 Nov 2025 GMT

Forecast update in hr min s Forecast update imminent

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

Today's Castlerock sea temperature is 12.4° C
(Which is 1.2°C warmer than normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 7PM is: 1.0m 5s primary swell from a North direction and 0.2m 13s secondary swell from a West-northwest direction, 0.2m 8s secondary swell from a North-northwest direction (forecast issued at 05:00pm November 16). The wind direction is predicted to be onshore.

Time (GMT) & Date	Wave Height	Wave Period
Morning (16 Nov)	-	-
Afternoon (16 Nov)	3ft (0.9m)	5s
Evening (16 Nov)	3.5ft (1.0m)	5s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Sunday 16			Monday 17								Tuesday 18								Wednesday 19
	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 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	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	N	N	N	N	N	N	N	N	NNW	NNW	NNW	NNW	NNW	NW	NW	NW	NW	NW	NNW	NNW	NNW	N	N	NNW
Period(s) (?)	5	5	5	6	6	6	6	6	6	7	7	7	7	7	5	7	8	9	10	10	10	9	9	9
Wave Graph (?)
kJ (?)	39	57	55	114	151	139	100	81	55	49	26	26	18	11	65	299	542	727	1440	2340	2367	1372	1017	1027
Wind (km/h)	N	NNE	N	NNE	NNE	NE	NE	N	NNW	NW	WSW	SW	SSW	W	W	WNW	WNW	NNW	N	N	N	N	N	N
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	on	on	cross- on	cross- on	cross- on	cross- on	glass	cross- on	cross- on	cross- off	cross- off	cross- off	cross	cross	cross- on	cross- on	on	on	on	on	on	on	on
High Tide / height (m)		3:51PM 1.62				4:12AM 1.44				4:23PM 1.63				4:42AM 1.54				4:53PM 1.64				5:11AM 1.62
Low Tide / height (m)				10:21PM 0.33				10:17AM 0.34				10:48PM 0.27				10:54AM 0.30				11:14PM 0.24				11:28AM 0.27

	Sunday 16			Monday 17								Tuesday 18								Wednesday 19
Sunrise	-	-	-	-	-	-	8:02	-	-	-	-	-	-	-	8:03	-	-	-	-	-	-	-	8:06	-
Sunset	4:22	-	-	-	-	-	-	-	4:20	-	-	-	-	-	-	-	4:19	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	1	-	1	2	1	1	1	-	-	1	1	1
Temp. °C	8	9	9	8	8	7	7	7	7	7	7	6	5	6	8	9	9	8	7	7	6	5	6	5
Feels °C (?)	0	3	2	1	1	1	2	4	4	2	3	1	0	1	1	-1	0	-3	-7	-6	-6	-6	-4	-6

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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