Castlerock Surf Break

Castlerock 48 hour detailed Surf Forecast

Lat Long: 55.17° N 6.78° W

Issued: 6 pm 12 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
12.5° C

Slightly warmer than usual

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 (12 Jun):

  • Afternoon surf: Afternoon surf (12 Jun, local time) - 3.5ft (1.1m), 8s period with WNW swell.
  • Evening surf: Evening surf (12 Jun, local time) - 4.5ft (1.3m), 12s period with WNW swell.

The current surf forecast for Castlerock at 11PM is: 1.6m 12s primary swell from a West-northwest direction and 0.9m 4s secondary swell from a West direction (forecast issued at 06:00pm June 12). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (12 Jun)--
Afternoon (12 Jun)3.5ft (1.1m)8s
Evening (12 Jun)4.5ft (1.3m)12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 17°C on Mon morning, min 10°C on Sat night). Winds decreasing (fresh winds from the W on Fri afternoon, calm by Sun night).

Fri
12
Saturday
13
Sunday
14
Mon
15
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
1 AM
4 AM
7 AM
10 AM
1 PM
Rating
(10 max)
0
0
0
0
0
1
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)
1.2
WNW
8
1.4
WNW
10
1.6
WNW
12
2.1
WNW
12
2.1
WNW
12
1.9
WNW
12
1.8
NW
12
1.7
NW
12
1.7
NW
11
1.6
NW
11
1.1
WNW
11
1
NW
7
0.9
NNW
7
0.9
NNW
7
1
NNW
7
0.9
NNW
8
0.8
NNW
8
0.6
NNW
8
0.5
NNW
8
0.4
NNW
7
0.4
NNW
7
0.3
NNW
7
0.3
NNW
7
0.2
NNW
5
Wave Graph
Metric surfscale
Energy kJ
159
334
722
1237
1299
1022
902
794
702
558
281
107
83
83
114
108
75
49
33
21
17
9
9
3
Wind (km/h)
35
WSW
40
W
40
W
35
W
35
W
30
W
35
W
35
WNW
35
WNW
30
WNW
25
WNW
20
WNW
20
WNW
20
NW
15
NNW
15
NNW
15
NNW
10
NNW
5
NNE
10
S
10
SSE
10
SSE
15
SSE
15
SE
Wind State
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
on
on
on
glassy
off
cross-off
cross-off
cross-off
cross-off
High Tide
4:44PM1.49m
5:04AM1.70m
5:33PM1.64m
5:55AM1.74m
6:21PM1.77m
6:44AM1.74m
Low Tide
10:50PM0.33m
11:31AM0.22m
11:49PM0.23m
12:18PM0.17m
00:46AM0.15m
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:47
4:46
4:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:06
10:07
10:07
10:07
 mm
Temp °C
14
13
12
12
11
11
12
13
13
12
11
11
11
10
11
12
12
12
11
11
10
11
14
17
Feels °C
7
5
4
5
4
5
5
5
6
6
6
7
7
6
8
9
9
10
10
9
7
8
11
14
Swell 1
Height (m)
Direction
Period (s)
0.4
WNW
13
0.7
NW
12
1.6
WNW
12
1.9
WNW
12
0.9
NNW
7
1
NW
7
0.9
NNW
7
0.4
WNW
10
1
NNW
7
0.9
NNW
8
0.8
NNW
8
0.6
NNW
8
0.5
NNW
8
0.4
NNW
7
0.4
NNW
7
0.3
NNW
7
0.3
NNW
7
0.2
NNW
5
Energy kJ
64
144
722
1022
75
107
83
38
114
108
75
49
33
21
17
9
9
3
Swell 2
Height (m)
Direction
Period (s)
0.7
WNW
10
0.5
WNW
10
0.3
NNW
10
0.4
WNW
9
0.3
WNW
9
0.3
WNW
9
0.3
WNW
9
0.3
WNW
8
0.2
WNW
8
0.2
WNW
8
0.2
WNW
8
0.2
WNW
8
0.2
N
5
Energy kJ
95
56
20
29
16
16
16
14
7
7
6
6
2
Swell 3
Height (m)
Direction
Period (s)
0.1
N
10
0.1
W
9
0.1
NW
7
Energy kJ
2
1
2
Wind waves
Height (m)
Direction
Period (s)
1.2
WNW
8
1.4
WNW
10
0.9
W
4
2.1
WNW
12
2.1
WNW
12
1.8
NW
12
1.7
NW
12
1.7
NW
11
1.6
NW
11
1.1
WNW
11
0.9
NNW
7
Energy kJ
159
334
28
1237
1299
902
794
702
558
281
83
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
1
3
2
4
4
3
3
2
3
1
1
2
1
1
1
1
1
1
1
1
Distance (km)
780
331
339
364
339
387
387
409
398
382
187
187
144
114
126
97
131
107
16
40
40
40
40
40
Best forecast wave conditions in Londonderry
Rating
(10 max)
Best forecast wave conditions in Ireland
Rating
(10 max)
1
2
4
4
4
4
4
4
3
3
3
2
2
1
2
1
1
2
1
1
1
1
1
Header Global
Rating
(10 max)
5
4
8
9
6
5
5
5
5
5
5
4
4
4
4
5
5
9
9
4
4
5
5
5
  • 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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