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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 am Friday 30 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: 1.0m 19s primary swell from a West-northwest direction and 0.1m 11s secondary swell from a West direction (forecast issued at 05:00am January 30). An open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (30 Jan)2.5ft (0.8m)20s
Afternoon (30 Jan)3.5ft (1.1m)18s
Evening (30 Jan)3.5ft (1.0m)17s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
30
Saturday
31
Sunday
01
Mon
02
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
1
1
1
0
0
0
0
2
2
2
2
2
2
0
0
0
2
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.2
WNW
0.4
NW
0.8
WNW
1
WNW
1.1
NW
1
WNW
1
WNW
0.9
WNW
0.9
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.8
WNW
0.7
WNW
0.7
WNW
0.8
WNW
0.6
NW
1
NW
1.4
NW
Period(s) (?)122120191818171716161615151515151514141413201816
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14111490742743644622498407318310298291287279275272236175163204239607964
Wind
(km/h)
45
ESE
40
ESE
45
ESE
45
ESE
40
ESE
35
ESE
25
ESE
20
E
15
E
20
E
20
E
15
E
15
E
5
SSE
10
SSW
10
S
15
SSE
15
SSW
25
WNW
20
WSW
20
WNW
10
W
10
S
10
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscross-
off		cross-
off		offoffoffoffcross-
on		cross-
off		crosscross-
off		offcross-
off
High Tide
/ height (m)
3:59AM
1.52
4:26PM
1.47
4:52AM
1.72
5:13PM
1.55
5:37AM
1.89
5:54PM
1.61
Low Tide
/ height (m)
10:39AM
0.36
10:49PM
0.31
11:32AM
0.22
11:32PM
0.16
12:17PM
0.13
Friday
30
Saturday
31
Sunday
01
Mon
02
Sunrise--8:22-------8:21-------8:18-----
Sunset----4:58-------5:00-------5:01---
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
rain showers
clear
clear
clear
clear
clear
Rain (mm)
2111------1-------1-----
Temp. °C444567666677777666788765
Feels °C (?)-6-5-6-5-30-101133354222133331
  • 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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