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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 11 pm Sunday 11 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
9.2° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 1AM is: 1.2m 12s primary swell from a West-northwest direction (forecast issued at 11:00pm January 11). An open ocean swell of 0.1m 8s is not directed at the surf break, a second open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (12 Jan)4.5ft (1.3m)11s
Afternoon (12 Jan)--
Evening (12 Jan)--

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
12
Tuesday
13
Wednesday
14
9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM
Rating
(10 max)
0
0
0
0
0
0
1
3
3
4
3
0
0
0
0
0
1
2
2
3
3
1
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
WNW
1.2
WNW
1.2
WNW
1.3
WNW
1.3
WNW
1.2
WNW
0.7
NNW
1.9
NW
2.2
NW
2.2
NNW
2.1
NNW
2
NNW
1.8
NNW
1.7
NNW
1.7
NW
1.8
NW
2.1
NW
2
NW
1.9
NW
1.9
NW
1.6
NW
1.4
NW
1.2
NW
0.9
NNW
Period(s) (?)12111211119131212121212121210101111111111111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)13134937937237923114910101321136112801087874821616577990915828777572467334189
Wind
(km/h)
50
SSW
40
SW
40
SW
40
SW
30
SSW
25
SSW
25
SSW
5
WNW
10
NNW
5
NNW
10
NNW
25
NNW
25
NW
35
NW
35
NW
30
WNW
25
WNW
20
W
20
SW
20
SSW
25
S
30
S
25
S
25
S
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		cross-
on		onglasscross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		crosscross-
off		cross-
off		offoffoffoffoff
High Tide
/ height (m)
12:19AM
1.09
1:09PM
1.20
2:08AM
1.13
2:36PM
1.19
3:21AM
1.22
3:37PM
1.23
Low Tide
/ height (m)
6:28PM
0.66
6:31AM
0.66
7:39PM
0.67
8:08AM
0.69
8:57PM
0.63
9:37AM
0.64
Monday
12
Tuesday
13
Wednesday
14
Sunrise----8:47-------8:45-------8:45---
Sunset------4:22-------4:24-------4:27-
light rain
light rain
rain showers
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
clear
part cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
light rain
Rain (mm)
121---1312123---------13
Temp. °C1099999977776676655444456
Feels °C (?)010023454550-1-2-3-2-2-1-1-2-3-4-20
  • 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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