Castlerock Surf Break

Lat Long: 55.17° N 6.78° W

Castlerock 48 hour detailed Surf Forecast

Issued: 12 pm 27 Jul 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
15.4° 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 (27 Jul):

  • Morning surf: Morning surf (27 Jul, local time) - 3.5ft (1.1m), 10s period with NW swell.
  • Afternoon surf: Afternoon surf (27 Jul, local time) - 3ft (0.9m), 10s period with NW swell.
  • Evening surf: Evening surf (27 Jul, local time) - 2.5ft (0.8m), 10s period with WNW swell.

The current surf forecast for Castlerock at 3PM is: 0.9m 10s primary swell from a Northwest direction and 0.3m 10s secondary swell from a North-northwest direction (forecast issued at 12:00pm July 27). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (27 Jul)3.5ft (1.1m)10s
Afternoon (27 Jul)3ft (0.9m)10s
Evening (27 Jul)2.5ft (0.8m)10s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Mon night. Very mild (max 19°C on Tue morning, min 11°C on Wed night). Winds decreasing (fresh winds from the SSW on Tue morning, light winds from the NNW by Wed afternoon).

Mon
27
Tuesday
28
Wednesday
29
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)
2
2
1
0
1
1
1
1
0
0
0
0
1
1
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)
1
NW
10
1
NW
10
0.9
NW
10
0.9
NW
10
0.7
NW
10
0.7
NW
9
0.7
WNW
9
0.6
WNW
9
0.6
WNW
9
0.8
WNW
9
0.7
WNW
9
0.7
WNW
9
0.7
WNW
9
0.7
WNW
9
0.6
WNW
9
0.5
WNW
8
0.5
WNW
8
0.6
WNW
8
0.6
WNW
8
0.5
NW
8
0.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
200
196
142
139
94
90
75
55
55
84
67
68
70
68
49
40
39
45
45
32
31
Wind (km/h)
15
SW
15
SW
10
WSW
15
W
10
S
15
S
15
S
25
SSW
30
SSW
25
SW
15
SSW
15
SSW
10
SSW
15
S
10
S
15
S
15
SSW
15
NW
5
NNW
10
NW
5
W
Wind State
cross-off
cross-off
cross-off
cross
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-on
on
cross-on
cross
High Tide
6:12PM1.55m
6:18AM1.42m
6:45PM1.66m
6:48AM1.49m
7:16PM1.75m
Low Tide
12:07PM0.38m
00:44AM0.41m
12:41PM0.27m
1:18AM0.35m
1:12PM0.18m
clear
cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
cloud
light rain
rain showers
cloud
light rain
cloud
cloud
cloud
light rain
light rain
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:26
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:39
9:38
9:37
 mm
1
1
2
1
1
2
1
1
2
Temp °C
15
15
16
18
16
16
17
18
18
19
18
17
17
16
16
16
17
15
15
15
13
Feels °C
13
13
15
17
16
15
16
16
14
16
17
16
16
15
15
15
15
13
15
14
12
  • 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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