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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 am Friday 09 Jan 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
9.3° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 11AM is: 1.2m 13s primary swell from a Northwest direction (forecast issued at 05:00am January 09). The wind direction is predicted to be cross-shore.

Time (GMT) & DateWave HeightWave Period
Morning (09 Jan)4ft (1.2m)13s
Afternoon (09 Jan)3.5ft (1.1m)12s
Evening (09 Jan)3.5ft (1.1m)12s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
09
Saturday
10
Sunday
11
Mon
12
3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM
Rating
(10 max)
1
0
1
1
1
2
2
3
3
3
3
2
2
2
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
NW
1.2
NW
1.2
NW
1.1
NW
1.1
NW
1.1
NW
1.1
NW
1.3
WNW
1.4
NW
1.4
NW
1.4
NW
1.2
NW
1.2
NW
1.2
NW
1
NW
0.9
NW
0.7
NW
0.5
WNW
0.7
WNW
0.7
WNW
0.6
WNW
0.6
WNW
0.7
WNW
0.9
WNW
Period(s) (?)131313121212121413131312111110101010121212131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2994884733983193143676636516235854213803342121379658138129111129142206
Wind
(km/h)
10
NW
10
NW
15
WNW
15
W
10
WNW
5
SW
10
SSW
10
SSW
10
SSW
15
S
15
SSE
20
S
15
S
20
SSE
40
SSE
45
SSE
50
S
40
S
35
S
30
SSE
30
SSE
40
SSE
40
SSW
50
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		crosscrosscrosscross-
off		offcross-
off		cross-
off		offoffoffoffoffoffoffoffoffoffoffoffoffoffoff
High Tide
/ height (m)
10:01AM
1.62
10:00PM
1.21
10:47AM
1.46
10:54PM
1.14
11:45AM
1.30
Low Tide
/ height (m)
3:36AM
0.27
4:43PM
0.52
4:21AM
0.41
5:31PM
0.60
5:16AM
0.55
6:28PM
0.66
Friday
09
Saturday
10
Sunday
11
Mon
12
Sunrise--8:48-------8:48-------8:47-----
Sunset----4:17-------4:20-------4:22---
cloud
cloud
light rain
cloud
part cloud
clear
part cloud
clear
clear
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
cloud
light rain
light rain
light rain
cloud
Rain (mm)
--1-----------24211-131-
Temp. °C555565443334554578101011111010
Feels °C (?)11112200-2-2-2-10-1-5-5-4-134541-1
  • 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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