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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 11 am Wednesday 07 Jan 2026 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
9.5° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 4PM is: 1.2m 9s primary swell from a North-northwest direction and 0.6m 9s secondary swell from a West-northwest direction (forecast issued at 11:00am January 07). The wind direction is predicted to be cross-shore.

Time (GMT) & DateWave HeightWave Period
Morning (07 Jan)8ft (2.5m)9s
Afternoon (07 Jan)4.5ft (1.3m)9s
Evening (07 Jan)2ft (0.6m)11s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Wednesday
07
Thursday
08
Friday
09
Saturday
10
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
0
0
1
2
1
1
0
0
2
3
3
2
1
2
2
0
0
0
0
0
1
3
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
NNW
1.9
NNW
1.3
NNW
1
NNW
0.6
WNW
0.5
WNW
0.5
WNW
0.9
WNW
1.2
NW
1.6
NW
1.6
NW
1.3
NW
1.3
NW
1.1
NW
1.2
NW
1.2
NW
1.1
NW
1.1
NW
1.1
NW
1.1
NW
1.2
NW
1.3
NW
1.4
NW
1.4
NW
Period(s) (?)99991110101010121111111213131312121213131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)926554270162876058146316633574414375343511488424346373367464543632623
Wind
(km/h)
30
NNW
15
NW
10
W
5
SW
10
SSE
10
S
30
WNW
15
WNW
10
WSW
10
SSW
5
SW
5
NW
5
N
5
WNW
10
W
20
WNW
20
WNW
20
WNW
20
WNW
20
WNW
10
WNW
10
WSW
10
NW
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		crosscross-
off		offoffcrosscrosscross-
off		cross-
off		glasscross-
on		onglasscrosscrosscrosscross-
on		cross-
on		cross-
on		crosscross-
off		cross-
on		on
High Tide
/ height (m)
8:36AM
1.91
8:39PM
1.40
9:18AM
1.78
9:18PM
1.30
10:01AM
1.62
10:00PM
1.21
Low Tide
/ height (m)
3:17PM
0.31
2:55AM
0.16
4:00PM
0.42
3:36AM
0.27
4:43PM
0.52
4:21AM
0.41
Wednesday
07
Thursday
08
Friday
09
Saturday
10
Sunrise8:49-------8:49-------8:48-------
Sunset--4:15-------4:16-------4:17-----
cloud
cloud
cloud
cloud
light rain
light rain
rain showers
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
light rain
light rain
light rain
cloud
clear
clear
clear
cloud
clear
Rain (mm)
----111------1-111------
Temp. °C555433655555555556655455
Feels °C (?)-3011-1-1-2012222210-100-11120
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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 Castlerock 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.

View detailed surf forecast for Castlerock at:
surf-forecast.com

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