Castlerock Surf Break

Lat Long: 55.17° N 6.78° W

Castlerock 48 hour detailed Surf Forecast

Issued: 12 pm 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
15.5° C
1.2° 

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 (01 Aug):

  • Morning surf: Morning surf (01 Aug, local time) - 3ft (0.9m), 7s period with NW swell.
  • Afternoon surf: Afternoon surf (01 Aug, local time) - 3ft (0.9m), 7s period with NW swell.
  • Evening surf: Evening surf (01 Aug, local time) - 2.5ft (0.8m), 7s period with NW swell.

The current surf forecast for Castlerock at 9PM is: 0.8m 7s primary swell from a Northwest direction and 0.1m 9s secondary swell from a North direction (forecast issued at 12:00pm August 01). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (01 Aug)3ft (0.9m)7s
Afternoon (01 Aug)3ft (0.9m)7s
Evening (01 Aug)2.5ft (0.8m)7s

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


Short Range Forecast

Moderate rain (total 11mm), heaviest on Mon morning. Very mild (max 16°C on Sat afternoon, min 11°C on Sat night). Wind will be generally light.

Sat
1
Sunday
2
Monday
3
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
1
1
1
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
Wave
Height (m)
Direction
Period (s)
0.9
NW
7
0.9
NW
7
0.9
NW
7
0.9
NW
7
0.8
NW
7
0.7
NW
7
0.7
NW
8
0.8
NW
8
0.8
NW
8
0.8
NW
8
0.7
NW
8
0.6
NW
8
0.6
NW
8
0.6
NNW
8
0.4
NW
7
0.4
NW
7
0.4
NW
7
0.4
NW
7
0.3
NNW
9
0.3
NNW
9
0.3
NNW
9
Wave Graph
Metric surfscale
Energy kJ
63
67
77
77
55
45
63
78
78
78
65
48
46
37
19
19
16
16
16
16
15
Wind (km/h)
25
W
25
W
25
WNW
20
WNW
15
W
10
WSW
10
SW
5
SSW
5
SE
5
ENE
15
NE
15
ENE
10
ESE
10
SSE
10
E
10
E
20
ENE
20
E
20
E
15
ENE
15
ESE
Wind State
cross
cross
cross-on
cross-on
cross
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross-off
High Tide
8:18AM1.57m
8:48PM1.86m
8:51AM1.56m
9:20PM1.82m
9:26AM1.52m
9:54PM1.75m
Low Tide
2:36PM0.10m
3:18AM0.30m
3:03PM0.14m
3:47AM0.32m
3:32PM0.20m
clear
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:35
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:30
9:29
9:27
 mm
1
1
1
3
2
1
Temp °C
15
15
16
15
13
12
11
11
13
15
16
16
15
14
12
12
12
13
13
14
15
Feels °C
10
10
11
11
11
10
10
10
12
13
14
14
13
12
10
10
9
10
9
12
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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