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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 pm 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 9PM is: 1.1m 13s primary swell from a Northwest direction (forecast issued at 05:00pm March 09). The wind direction is predicted to be offshore and the swell rating is 2.

Time (GMT) & DateWave HeightWave Period
Morning (09 Mar)--
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
3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM
Rating
(10 max)
3
3
2
2
2
2
2
2
1
1
0
0
0
0
0
3
3
1
0
0
0
0
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
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
2.4
WNW
3.5
WNW
3.5
WNW
3
NW
3
NW
2.5
NW
2.3
NW
2.3
NW
2.5
NW
2.5
NW
3
NW
3
NW
Period(s) (?)131313131313131212121413131414151414131314141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)570562444392380535471373428456540590187254054955412131372633177818192371247432803669
Wind
(km/h)
15
SW
15
SSW
20
SSW
20
S
25
S
25
S
20
S
20
SSE
25
S
35
S
40
SW
45
SW
50
WSW
50
W
40
W
30
WSW
30
SW
40
SW
45
SSW
55
SW
50
SW
40
W
30
WSW
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offoffoffoffoffoffoffoffoffcross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off
High Tide
/ height (m)
9:06PM
1.39
9:21AM
1.26
9:43PM
1.25
9:55AM
1.10
10:47PM
1.11
11:22AM
0.97
Low Tide
/ height (m)
3:08PM
0.49
3:30AM
0.55
3:35PM
0.61
4:19AM
0.72
4:26PM
0.73
6:28AM
0.84
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Sunrise------6:56-------6:52-------6:50-
Sunset-6:16-------6:19-------6:21------
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
light rain
rain showers
part cloud
cloud
clear
clear
part cloud
cloud
cloud
cloud
cloud
light rain
mod rain
light rain
light rain
Rain (mm)
---------23---------2653
Temp. °C10976667911101087678878910757
Feels °C (?)65100025531-2-4-5-300-2-3-30-2-2-1
  • 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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