Castlerock Surf Break

Lat Long: 55.17° N 6.78° W

Castlerock 48 hour detailed Surf Forecast

Issued: 12 am 09 Jul 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
14.9° C
1.5° 

Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Castlerock today (09 Jul):

  • Morning surf: Morning surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
  • Afternoon surf: Afternoon surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
  • Evening surf: Evening surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.

The current surf forecast for Castlerock at 9AM is: 0.4m 9s primary swell from a West-northwest direction (forecast issued at 12:00am July 09). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (09 Jul)1.5ft (0.4m)9s
Afternoon (09 Jul)1.5ft (0.4m)9s
Evening (09 Jul)1.5ft (0.4m)9s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Thu morning, min 11°C on Fri night). Wind will be generally light.

Thursday
9
Friday
10
Saturday
11
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
WNW
10
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
0.3
WNW
9
0.3
WNW
9
0.4
NW
12
0.6
WNW
11
0.6
WNW
11
0.6
NW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
9
0.4
WNW
9
0.4
WNW
9
0.4
WNW
9
Wave Graph
Metric surfscale
Energy kJ
35
34
32
32
32
32
31
26
16
15
35
81
75
82
65
65
72
68
64
60
56
32
31
30
Wind (km/h)
0
E
10
S
10
SSW
5
WSW
5
N
15
N
10
N
5
NE
5
NE
5
NE
5
NE
10
N
10
N
15
N
20
NNW
20
NNW
20
NNW
15
NNW
20
NNW
20
NNW
15
N
20
N
15
N
15
N
Wind State
glassy
off
off
glassy
glassy
on
on
glassy
glassy
glassy
glassy
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
High Tide
1:10AM1.46m
1:56PM1.21m
2:30AM1.44m
3:19PM1.30m
3:48AM1.47m
4:27PM1.45m
Low Tide
7:52AM0.51m
7:51PM0.55m
9:06AM0.48m
9:22PM0.51m
10:18AM0.42m
clear
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
clear
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
5:00
5:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:04
10:04
10:02
 mm
Temp °C
14
14
15
18
19
18
17
16
16
16
16
16
17
15
12
11
11
11
11
12
13
14
15
14
Feels °C
14
13
14
19
19
17
17
16
17
17
17
16
17
13
9
8
7
8
8
9
11
12
14
13
  • 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
How to use the Wavefinder 

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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