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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 11 am Monday 16 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
8.0° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 8PM is: 3.0m 16s primary swell from a Northwest direction (forecast issued at 11:00am March 16). The wind direction is predicted to be offshore.

Time (GMT) & DateWave HeightWave Period
Morning (16 Mar)13ft (4.0m)18s
Afternoon (16 Mar)11ft (3.5m)17s
Evening (16 Mar)8ft (2.5m)16s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
7
8
6
3
4
3
3
3
3
2
2
1
3
3
3
3
2
3
2
2
2
2
2
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
4
NW
4
NW
3.5
NW
3
NW
2.5
NW
2.4
NW
2.2
NW
1.9
NW
1.9
NW
1.9
NW
1.8
NW
1.6
NW
1.4
NW
1.4
NW
1.3
NW
0.8
NW
0.9
NW
1.4
NW
1.3
NW
1.3
NW
1.4
NW
1.4
NW
1.5
NW
1.4
NW
Period(s) (?)181817171616141414141413131212181615151413131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)112618904680747763396275819831463144314231169859680567479373427827704648704673710623
Wind
(km/h)
25
SW
25
SSW
30
SSW
30
SSW
30
SSW
30
SSW
30
S
30
S
35
S
35
S
25
SSW
25
SSW
10
SSW
10
SSE
10
SSE
5
E
10
ENE
5
ENE
10
NNE
10
NNE
5
NNE
10
NNE
5
NNE
5
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offoffcross-
off		offoffoffoffoffoffcross-
off		cross-
off		cross-
off		offcross-
off		glasscrossglassononcross-
on		ononglass
High Tide
/ height (m)
4:46PM
1.46
5:07AM
1.80
5:16PM
1.59
5:36AM
1.95
5:47PM
1.69
Low Tide
/ height (m)
11:12AM
0.34
11:02PM
0.21
11:40AM
0.20
11:31PM
0.09
12:09PM
0.10
12:00AM
0.01
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Sunrise6:41-------6:37-------6:35-------
Sunset---6:30-------6:32-------6:35----
cloud
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
light rain
light rain
cloud
cloud
cloud
light rain
cloud
cloud
cloud
cloud
cloud
clear
part cloud
clear
Rain (mm)
-11-------11---1--------
Temp. °C78911111111111111111098888101011111099
Feels °C (?)0225555443546556598910878
  • 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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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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