Castlerock 48 hour detailed Surf Forecast

Lat Long: 55.17° N 6.78° W

Issued: 5 am 04 Nov 2026 (local time)

Forecast update in hr min

Today's Castlerock sea temperature is

12.4°C

Castlerock 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 Castlerock today (04 Nov):

Morning surf: Morning surf (04 Nov, local time) - 1.5ft (0.5m), 15s period with NW swell.
Afternoon surf: Afternoon surf (04 Nov, local time) - 2ft (0.6m), 14s period with WNW swell.
Evening surf: Evening surf (04 Nov, local time) - 2ft (0.6m), 13s period with NW swell.

The current surf forecast for Castlerock at 12PM is: 0.6m 14s primary swell from a West-northwest direction and 0.3m 3s secondary swell from a East direction (forecast issued at 05:00am November 04). The wind direction is predicted to be cross-offshore.

Time (GMT) & Date	Wave Height	Wave Period
Morning (04 Nov)	1.5ft (0.5m)	15s
Afternoon (04 Nov)	2ft (0.6m)	14s
Evening (04 Nov)	2ft (0.6m)	13s

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

	Short Range Forecast Mostly dry. Very mild (max 10°C on Thu afternoon, min 8°C on Wed morning). Winds decreasing (fresh winds from the E on Thu night, light winds from the E by Fri night).
	Wednesday 4							Thursday 5								Friday 6								Sat 7
	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM
Rating (10 max)	1	1	1	1	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 Period (s)	WNW 14	WNW 15	NW 15	WNW 14	WNW 14	NW 13	NW 13	NW 13	NW 12	NW 12	NW 11	NW 11	WNW 11	WNW 11	NW 10	NW 10	NW 10	NW 10	NW 13	NW 12	NW 12	NW 11	NW 11	NW 11	NW 10	NW 10
Wave Graph
kJ	138	85	109	140	133	142	138	128	72	69	64	58	46	44	25	25	25	24	26	23	37	32	30	30	28	26
Wind (km/h)	ESE	ESE	ESE	ESE	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	cross	cross	cross	cross-off	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross
High Tide	2:22AM1.16m				2:45PM1.65m					3:14AM1.30m				3:32PM1.73m				3:55AM1.43m				4:11PM1.77m				4:31AM1.55m
Low Tide			8:11AM0.45m					9:31PM0.36m				9:11AM0.36m				10:10PM0.27m				9:59AM0.27m				10:43PM0.21m


	—	7:35	—	—	—	—	—	—	—	7:37	—	—	—	—	—	—	—	7:39	—	—	—	—	—	—	—	7:41
	—	—	—	—	4:44	—	—	—	—	—	—	—	4:42	—	—	—	—	—	—	—	4:39	—	—	—	—	4:37
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	8	8	8	8	9	9	9	9	8	8	8	9	10	10	10	10	9	9	10	10	10	10	10	10	10	10
Feels °C	5	5	5	4	5	6	5	5	4	4	3	3	4	4	4	4	4	4	5	5	6	7	7	8	8	7
Swell 1 Height (m) Direction Period (s)	WNW 14	WNW 15	NW 15	WNW 14	WNW 14	NW 13	NW 13	NW 13	NW 12	NW 12	NW 11	NW 11	WNW 11	WNW 11	NW 10	NW 10	NW 10	NW 10	WNW 9	NW 12	NW 12	NW 11	NW 11	NW 11	NW 10	NW 10
kJ	138	85	109	140	133	142	138	128	72	69	64	58	46	44	25	25	25	24	17	23	37	32	30	30	28	26
Swell 2 Height (m) Direction Period (s)	—	NW 6	NW 5	—	—	—	ENE 3	—	—	—	—	—	—	NW 13	—	NW 13	NW 13	WNW 13	NW 13	WNW 9	NE 4	—	ENE 3	ENE 3	ENE 3	—
kJ	—	1	1	—	—	—	2	—	—	—	—	—	—	7	—	7	7	17	26	17	2	—	2	2	1	—
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	ENE 3	ENE 4	ENE 3	E 3	E 3	ENE 3	—	ENE 3	ENE 3	ENE 4	E 4	E 4	E 4	E 4	E 4	E 4	E 4	E 4	E 4	E 4	ESE 4	ENE 4	—	—	—	—
kJ	4	4	2	2	2	2	—	2	2	4	10	16	24	17	17	18	18	13	8	7	5	4	—	—	—	—
Nearest Offshore or Glassy	Castlerock Londonderry	Castlerock Londonderry	Castlerock Londonderry	Castlerock Londonderry	Five Finger Strand Donegal	Portstewart Strand Londonderry	Portstewart Strand Londonderry	Downhill Londonderry	Five Finger Strand Donegal	Five Finger Strand Donegal	Five Finger Strand Donegal	Pollan Bay Donegal	Five Finger Strand Donegal	Brinlack Point (Bloody Foreland) Donegal	Pollan Bay Donegal	Brinlack Point (Bloody Foreland) Donegal	Five Finger Strand Donegal	Five Finger Strand Donegal	Five Finger Strand Donegal	Five Finger Strand Donegal	Five Finger Strand Donegal	Portballintrae Antrim	Portballintrae Antrim	Portballintrae Antrim	Portballintrae Antrim	Portballintrae Antrim
Rating (10 max)	1	1	1	1	3	1	1	1	2	2	2	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	0	0	0	0	40	2	2	4	40	40	40	41	40	97	41	97	40	40	40	40	40	16	16	16	16	16
Best forecast wave conditions in Londonderry	Portstewart Strand	Portstewart Strand	Portstewart Strand	Portstewart Strand		Portstewart Strand	Portstewart Strand	Downhill
Rating (10 max)	1	1	1	1		1	1	1
Best forecast wave conditions in Ireland	Aileen's Clare	Aileen's Clare	Aileen's Clare	Pollacheeny Harbour Sligo	Aileen's Clare	Aileen's Clare	Brinlack Point (Bloody Foreland) Donegal	Bundoran Donegal	Aileen's Clare	Aileen's Clare	Brinlack Point (Bloody Foreland) Donegal	Brinlack Point (Bloody Foreland) Donegal	Brinlack Point (Bloody Foreland) Donegal	Doolin Point Clare	Doolin Point Clare	Doolin Point Clare	Doolin Point Clare	Inch Reefs Kerry	Aileen's Clare	Aileen's Clare	Aileen's Clare	Aileen's Clare	Aileen's Clare	Aileen's Clare	Doolin Point Clare	Doolin Point Clare
Rating (10 max)	3	3	3	3	3	2	3	2	2	2	2	2	2	1	1	1	1	2	1	1	1	1	1	1	1	1
Header Global	Bay of Skaill United Kingdom	Boners United States	Benkunqut Indonesia	Bay of Skaill United Kingdom	Bay of Skaill United Kingdom	Bali Village Indonesia	Cow Bombie Australia	Cow Bombie Australia	Barrancon Chile	Lebu Chile	Lebu Chile	Ranches United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Ranches United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Bells Beach - Bowl Australia	Lincoln City Nelscott Reef United States	Bali Village Indonesia	Cojo United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States
Rating (10 max)	4	4	4	4	4	4	5	5	4	5	5	5	5	5	5	5	8	8	7	6	5	6	4	5	9	9

Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

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Castlerock 48 hour detailed Surf Forecast

How big are the waves at Castlerock today (04 Nov):

Short Range Forecast

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