Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 pm Thursday 26 Mar 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
8.4° C
(Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 2AM is: 1.3m 11s primary swell from a Northwest direction (forecast issued at 05:00pm March 26). An open ocean swell of 0.2m 3s is not directed at the surf break, a second open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (GMT) & DateWave HeightWave Period
Morning (27 Mar)6.5ft (2.0m)14s
Afternoon (27 Mar)13ft (4.0m)19s
Evening (27 Mar)15ft (4.5m)18s

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


Updates in  hr  min  s Forecast update imminent
Thursday
26
Friday
27
Saturday
28
Sunday
29
3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM
Rating
(10 max)
3
1
1
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
3
3
4
2
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.5
NW
1.3
NW
1.2
NW
1.1
NW
1.3
NW
1.4
NW
2
NW
3.5
NW
4
NW
4.5
NW
4.5
NW
4.5
NW
4.5
NW
4.5
NW
4.5
NW
4.5
NW
4.5
NW
4
NNW
3.5
NNW
3
NNW
2.4
NNW
2.1
NW
1.9
NW
2.3
NW
Period(s) (?)121211111011142019181817171616141414141313121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)61442033829235545314018693118371123211722121241259110631937684577314629138912737182812239461327
Wind
(km/h)
25
SSW
20
SSW
20
SSW
20
WNW
20
WNW
20
W
25
WSW
35
W
35
W
35
W
35
W
40
W
40
W
45
WNW
45
NW
45
NW
45
NW
30
NW
20
W
20
SSW
25
SSW
35
SSW
40
SW
40
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
crosscrosscrosscross-
off
crosscrosscrosscrosscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
off
offcross-
off
cross-
off
cross-
off
High Tide
/ height (m)
1:09AM
1.31
2:17PM
1.09
2:51AM
1.46
3:27PM
1.21
3:47AM
1.64
Low Tide
/ height (m)
6:13PM
0.68
8:24AM
0.61
8:17PM
0.61
9:46AM
0.46
9:29PM
0.45
10:33AM
0.32
Thursday
26
Friday
27
Saturday
28
Sunday
29
Sunrise------6:11-------6:09-------6:07-
Sunset-6:51-------6:52-------6:54------
cloud
cloud
light rain
light rain
cloud
cloud
part cloud
rain showers
part cloud
cloud
part cloud
cloud
light rain
rain showers
rain showers
rain showers
rain showers
clear
part cloud
cloud
cloud
cloud
light rain
light rain
Rain (mm)
--11---1----11111-----22
Temp. °C7898767776655566676656610
Feels °C (?)1343211-2-2-3-3-5-5-6-5-5-5-201-2-2-31
  • 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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