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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 pm Wednesday 14 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
9.1° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 9PM is: 0.7m 10s primary swell from a North-northwest direction and 0.4m 12s secondary swell from a West-northwest direction (forecast issued at 05:00pm January 14). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (GMT) & DateWave HeightWave Period
Morning (14 Jan)--
Afternoon (14 Jan)3.5ft (1.1m)10s
Evening (14 Jan)2.5ft (0.7m)10s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Wednesday
14
Thursday
15
Friday
16
Saturday
17
3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM
Rating
(10 max)
0
0
1
1
2
2
4
4
4
4
4
4
3
3
3
3
3
3
3
2
2
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
NW
0.9
NW
0.7
NNW
0.6
NNW
0.3
NW
0.8
NW
1.4
NW
1.8
NW
1.8
NW
1.7
NW
1.8
NW
1.6
NW
1.6
NW
1.5
NW
1.4
NW
1.4
NW
1.4
NW
1.3
WNW
1.2
NW
1.2
WNW
1.1
NW
0.9
WNW
0.8
WNW
0.8
WNW
Period(s) (?)101010102321181818171716161615151515151414131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)22513985618250813561925190417171818141913501101967795795740649561450313219212
Wind
(km/h)
35
S
35
S
20
SSW
20
SSW
20
SSW
20
SSW
20
SSW
15
S
15
S
15
S
15
SSE
15
SSE
20
SSE
20
SSE
15
SSE
15
SSE
10
SSE
10
SE
10
SE
20
SE
10
ESE
15
SE
20
ESE
20
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffcross-
off		offoffoffoffoffoffcross-
off		cross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
3:37PM
1.23
4:09AM
1.34
4:21PM
1.31
4:48AM
1.46
4:57PM
1.39
5:23AM
1.57
Low Tide
/ height (m)
9:58PM
0.55
10:36AM
0.55
10:44PM
0.45
11:18AM
0.46
11:22PM
0.34
11:55AM
0.38
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunrise------8:44-------8:42-------8:41-
Sunset4:27-------4:28-------4:30-------
light rain
light rain
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
cloud
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
cloud
Rain (mm)
33------------------131-
Temp. °C568655456443333566666777
Feels °C (?)-4-2310-1-202-1-1-2-2-2-2122213322
  • 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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