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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 11 am Monday 09 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
8.1° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 7PM is: 1.3m 13s primary swell from a Northwest direction (forecast issued at 11:00am March 09). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (GMT) & DateWave HeightWave Period
Morning (09 Mar)4.5ft (1.4m)14s
Afternoon (09 Mar)4.5ft (1.3m)13s
Evening (09 Mar)3.5ft (1.1m)13s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
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)
3
3
2
3
2
2
2
2
2
2
2
0
0
0
0
0
0
3
2
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
NW
1.3
NW
1.3
NW
1.3
NW
1.1
NW
1.1
NW
1.1
NW
1.3
NW
1.2
NW
1.1
NW
1.2
NW
1.2
NW
1.2
NW
1.3
WNW
1.8
WNW
3
WNW
3.5
WNW
3
NW
2.5
NW
2.5
NW
2.3
NW
2.3
NW
2.4
NW
2.5
NW
Period(s) (?)141413131313131313121212141313131314141413131414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7696665705624443923805354713734284565405991060298642453201270823901730190423172474
Wind
(km/h)
15
S
15
SSW
15
SW
10
SSW
20
S
20
S
25
S
25
S
20
S
20
SSE
25
S
40
S
40
SW
45
SW
50
WSW
45
W
35
W
30
WSW
35
SW
40
SW
45
SW
55
SW
55
SSW
50
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		cross-
off		offoffoffoffoffoffoffoffoffcross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
8:53AM
1.43
9:06PM
1.39
9:21AM
1.26
9:43PM
1.25
9:55AM
1.10
10:47PM
1.11
Low Tide
/ height (m)
3:08PM
0.49
3:30AM
0.55
3:35PM
0.61
4:19AM
0.72
4:26PM
0.73
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Sunrise6:58-------6:56-------6:52-------
Sunset---6:16-------6:19-------6:21----
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
cloud
light rain
light rain
cloud
cloud
rain showers
clear
cloud
cloud
cloud
cloud
cloud
light rain
light rain
Rain (mm)
-----------13--1------14
Temp. °C79109755678101010777789899109
Feels °C (?)35662-1-1023521-3-4-3-201-1-1-3-2-2
  • 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

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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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