Castlerock Surf Break

Castlerock 48 hour detailed Surf Forecast

Lat Long: 55.17° N 6.78° W

Issued: 6 pm 30 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
14.7° C

1.8°C warmer than normal for this time of year

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 Jul):

  • Morning surf: Morning surf (01 Jul, local time) - 1.5ft (0.4m), 8s period with WNW swell.
  • Afternoon surf: Afternoon surf (01 Jul, local time) - 1.5ft (0.4m), 7s period with NW swell.
  • Evening surf: Evening surf (01 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.

The current surf forecast for Castlerock at 2AM is: 0.4m 9s primary swell from a West-northwest direction and 0.2m 7s secondary swell from a North-northwest direction (forecast issued at 06:00pm June 30). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (01 Jul)1.5ft (0.4m)8s
Afternoon (01 Jul)1.5ft (0.4m)7s
Evening (01 Jul)1.5ft (0.4m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 11mm), heaviest on Wed afternoon. Very mild (max 16°C on Tue afternoon, min 12°C on Wed afternoon). Winds increasing (light winds from the WSW on Wed morning, strong winds from the WNW by Wed night).

Tue
30
Wednesday
1
Thursday
2
Fri
3
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
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
1
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)
0.6
WNW
9
0.5
NW
9
0.5
NW
9
0.4
WNW
9
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
NW
7
0.4
NW
7
0.4
WNW
9
1.3
W
10
2.1
WNW
9
2
NW
8
1.8
NW
8
1.6
NW
8
1.4
NW
8
1.1
NW
7
1
NW
7
0.8
NW
7
0.9
NW
9
0.8
NW
9
0.8
NW
9
0.8
NW
9
Wave Graph
Metric surfscale
Energy kJ
56
40
39
31
28
27
26
26
12
13
30
306
673
532
457
296
227
130
94
69
138
112
95
93
Wind (km/h)
10
N
15
NNW
15
NNW
10
WNW
10
WNW
10
W
5
WSW
10
S
20
SSE
25
SSW
30
SW
35
WSW
45
WNW
35
WNW
30
WNW
25
WNW
25
WNW
25
WNW
15
W
15
SW
10
SSW
15
S
15
SSE
10
SSE
Wind State
on
on
on
cross-on
cross-on
cross
cross-off
off
off
off
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
off
off
cross-off
off
High Tide
7:29PM1.68m
7:35AM1.48m
8:04PM1.71m
8:06AM1.48m
8:39PM1.72m
8:38AM1.46m
Low Tide
1:27PM0.26m
2:05AM0.36m
2:00PM0.22m
2:41AM0.37m
2:31PM0.20m
3:15AM0.41m
rain showers
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
cloud
part cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:50
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:09
10:09
10:08
10:08
 mm
2
3
2
1
3
Temp °C
16
15
13
13
13
13
14
15
12
15
16
14
13
12
14
15
15
14
13
12
13
13
13
14
Feels °C
15
13
11
12
12
11
13
13
8
11
11
8
4
5
8
10
10
10
10
9
11
10
9
12
Swell 1
Height (m)
Direction
Period (s)
0.6
WNW
9
0.5
NW
9
0.5
NW
9
0.4
WNW
9
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
NW
7
0.4
NW
7
0.4
WNW
9
0.1
SE
4
0.5
NW
9
1
NW
7
0.8
NW
7
0.9
NW
9
0.8
NW
9
0.8
NW
9
0.8
NW
9
Energy kJ
56
40
39
31
28
27
26
26
12
13
30
1
42
94
69
138
112
95
93
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
5
0.3
E
4
0.2
E
4
0.3
NW
7
0.2
NNW
7
0.2
NNW
7
0.2
NNW
7
0.2
NNW
7
0.1
NW
7
0.2
W
9
0.5
NW
9
0.5
NW
9
0.1
W
11
0.1
W
11
0.2
W
11
0.2
W
10
Energy kJ
3
4
1
9
5
5
5
5
2
6
42
42
2
2
9
8
Swell 3
Height (m)
Direction
Period (s)
0.1
W
14
0.2
E
3
0.1
W
12
Energy kJ
4
1
3
Wind waves
Height (m)
Direction
Period (s)
0.3
S
2
0.4
S
3
0.4
SW
3
1.3
W
10
2.1
WNW
9
2
NW
8
1.8
NW
8
1.6
NW
8
1.4
NW
8
1.1
NW
7
0.3
SW
2
Energy kJ
1
2
2
306
673
532
457
296
227
130
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
2
2
1
2
1
1
1
3
4
4
1
1
1
1
1
1
1
1
Distance (km)
14
63
70
131
27
27
42
40
83
334
382
382
780
411
398
398
298
251
0
0
0
0
2
0
Best forecast wave conditions in Londonderry
Rating
(10 max)
1
1
1
1
1
1
Best forecast wave conditions in Ireland
Rating
(10 max)
1
4
3
2
2
2
1
3
4
4
3
3
3
2
2
2
1
1
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
5
5
4
5
5
9
7
7
6
6
5
5
7
9
9
9
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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