Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 6 pm Monday 06 Apr 2026 BST
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
8.3° C
(Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 10PM is: 0.6m 12s primary swell from a Northwest direction and 0.4m 21s secondary swell from a Northwest direction (forecast issued at 06:00pm April 06). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (06 Apr)--
Afternoon (06 Apr)3ft (0.9m)12s
Evening (06 Apr)1.5ft (0.4m)21s

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


Updates in  hr  min  s Forecast update imminent
Monday
06
Tuesday
07
Wednesday
08
Thursday
09
4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM
Rating
(10 max)
0
0
0
3
3
3
1
2
1
2
3
3
3
2
3
2
2
2
2
2
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.8
NW
0.8
NW
0.4
NW
1.2
NW
1.4
NW
1.4
NW
1.3
WNW
1.3
WNW
1.2
NW
1.2
NW
1.4
NW
1.4
NW
1.4
NW
1.3
NW
1.3
NW
1.1
NW
1.1
NW
1
NW
0.9
NW
1
WNW
1
WNW
1
WNW
1.3
WNW
1.1
NW
Period(s) (?)121221191918171616151515141413131312121111111113
Wave
Graph
(?)Metric surfscale
Energy kJ (?)197169118103314411278975875739666805784752630577437418287205265261230401398
Wind
(km/h)
30
SSE
30
SSE
25
SSE
20
SSE
20
SE
25
SE
25
SSE
25
SSE
30
SSE
15
SSE
15
S
5
SSW
0
E
5
NNW
5
N
0
SSW
5
NE
5
S
15
S
20
S
20
W
35
W
35
W
35
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offglassglasscross-
on
glassglassglassoffoffoffcrosscrosscrosscross
High Tide
/ height (m)
9:10PM
1.57
9:22AM
1.38
9:43PM
1.45
9:51AM
1.25
10:24PM
1.31
10:28AM
1.11
Low Tide
/ height (m)
3:06PM
0.35
3:33AM
0.43
3:30PM
0.46
4:09AM
0.58
4:00PM
0.57
5:04AM
0.73
Monday
06
Tuesday
07
Wednesday
08
Thursday
09
Sunrise-----6:43-------6:41-------6:39--
Sunset-8:13-------8:15-------8:16------
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
cloud
cloud
light rain
rain showers
rain showers
rain showers
Rain (mm)
--------------------3111
Temp. °C11109877101314131312111091110111088777
Feels °C (?)4433214889101211981199633-1-1-2
  • 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

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.


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