Castlerock Surf Break

Lat Long: 55.17° N 6.78° W

Castlerock 48 hour detailed Surf Forecast

Issued: 6 am 03 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 (03 Aug):

  • Morning surf: Morning surf (03 Aug, local time) - 1.5ft (0.4m), 7s period with NW swell.
  • Afternoon surf: Afternoon surf (03 Aug, local time) - 2.5ft (0.7m), 4s period with E swell.
  • Evening surf: Evening surf (03 Aug, local time) - 3ft (0.9m), 4s period with ENE swell.

The current surf forecast for Castlerock at 2PM is: 0.3m 9s primary swell from a North-northwest direction and 0.3m 7s secondary swell from a Northwest direction, 0.6m 4s secondary swell from a East direction (forecast issued at 06:00am August 03). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (03 Aug)1.5ft (0.4m)7s
Afternoon (03 Aug)2.5ft (0.7m)4s
Evening (03 Aug)3ft (0.9m)4s

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


Short Range Forecast

Heavy rain (total 30mm), heaviest during Tue afternoon. Very mild (max 18°C on Tue afternoon, min 13°C on Mon morning). Winds increasing (light winds from the SSE on Tue afternoon, fresh winds from the NW by Wed afternoon).

Monday
3
Tuesday
4
Wednesday
5
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
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
NW
7
0.4
NW
7
0.4
NW
7
0.4
NW
7
0.8
E
4
0.8
E
4
0.9
ENE
5
0.2
NNW
8
0.2
N
8
0.2
N
8
0.3
NNW
8
0.3
NNW
8
0.3
NNW
8
0.3
NNW
8
0.4
NNW
8
0.5
NNW
9
0.5
NNW
10
0.6
NNW
10
0.6
NW
10
0.8
WNW
7
1
NW
8
1.1
NW
8
1.5
NW
7
Wave Graph
Metric surfscale
Energy kJ
19
19
17
15
22
24
35
7
6
6
13
12
11
12
27
46
54
68
84
70
116
145
222
Wind (km/h)
5
ESE
10
ENE
15
E
20
E
20
E
10
E
20
E
25
SE
25
SSE
20
SE
15
SSE
10
SSE
10
SSE
10
W
15
WNW
10
SW
20
SW
20
SW
15
WNW
25
WNW
30
WNW
35
NW
30
NW
Wind State
cross-off
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-off
cross-off
cross-off
cross
cross-on
cross
cross-on
cross-on
High Tide
9:26AM1.52m
9:54PM1.75m
10:04AM1.45m
10:33PM1.64m
10:49AM1.36m
Low Tide
3:47AM0.32m
3:32PM0.20m
4:19AM0.37m
4:06PM0.30m
4:58AM0.43m
4:51PM0.41m
cloud
cloud
light rain
light rain
cloud
cloud
cloud
light rain
light rain
light rain
rain showers
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
part cloud
cloud
part cloud
rain showers
light rain
light rain
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:39
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:27
9:24
9:22
 mm
2
3
1
4
3
1
3
7
2
1
1
1
Temp °C
14
14
13
13
15
16
16
15
15
15
16
17
18
17
16
15
14
14
15
16
15
14
14
Feels °C
13
13
11
10
12
15
14
11
11
12
15
17
18
17
15
14
11
11
13
13
10
8
9
  • 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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