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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 am Friday 23 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
8.7° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 1PM is: 0.4m 13s primary swell from a West-northwest direction and 0.3m 10s secondary swell from a West-northwest direction (forecast issued at 05:00am January 23). An open ocean swell of 1.3m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (23 Jan)1.5ft (0.4m)13s
Afternoon (23 Jan)1.5ft (0.4m)12s
Evening (23 Jan)1.5ft (0.4m)12s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
23
Saturday
24
Sunday
25
Mon
26
3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
WNW
1.5
E
0.4
WNW
0.4
WNW
0.4
NW
0.3
WNW
0.4
WNW
0.7
WNW
0.7
WNW
0.8
WNW
0.8
WNW
0.9
WNW
1.1
NW
1.1
NW
1.1
NW
1.1
NW
0.9
WNW
0.9
NW
0.8
WNW
0.7
NW
0.7
WNW
0.6
WNW
0.8
WNW
0.7
WNW
Period(s) (?)13613131212121615151415181616151514141313131615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1951436765392959226201272264387703617565544377305257183154114322191
Wind
(km/h)
40
ESE
35
ESE
30
ESE
40
ESE
40
E
40
E
35
ESE
35
ESE
40
ESE
40
ESE
35
ESE
35
ESE
35
ESE
35
E
40
E
45
E
45
E
45
E
40
E
35
ESE
30
E
30
E
25
ESE
25
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscrosscross-
off		crosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
8:40AM
1.84
8:46PM
1.49
9:18AM
1.76
9:28PM
1.40
10:01AM
1.64
10:19PM
1.30
Low Tide
/ height (m)
2:19AM
0.12
3:09PM
0.33
2:51AM
0.20
3:46PM
0.38
3:30AM
0.30
4:32PM
0.46
Friday
23
Saturday
24
Sunday
25
Mon
26
Sunrise--8:33-------8:32-------8:30-----
Sunset----4:44-------4:45-------4:47---
light rain
light rain
light rain
cloud
cloud
light rain
cloud
part cloud
part cloud
cloud
cloud
clear
clear
clear
clear
cloud
light rain
light rain
cloud
light rain
cloud
cloud
cloud
cloud
Rain (mm)
111--1----------11-1----
Temp. °C677787777767776556566655
Feels °C (?)-3-10-2-1-2-1-1-3-2-3-2-1-2-4-5-5-4-4-2-1-1-2-1
  • 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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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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