Castlerock Surf Break

Castlerock 48 hour detailed Surf Forecast

Lat Long: 55.17° N 6.78° W

Issued: 6 pm 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
14.8° C

1.9°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 (30 Jun):

  • Morning surf: Morning surf (30 Jun, local time) - 2ft (0.6m), 10s period with WNW swell.
  • Afternoon surf: Afternoon surf (30 Jun, local time) - 2ft (0.6m), 9s period with WNW swell.
  • Evening surf: Evening surf (30 Jun, local time) - 1.5ft (0.5m), 9s period with NW swell.

The current surf forecast for Castlerock at 12AM is: 0.9m 10s primary swell from a Northwest direction (forecast issued at 06:00pm June 29). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (30 Jun)2ft (0.6m)10s
Afternoon (30 Jun)2ft (0.6m)9s
Evening (30 Jun)1.5ft (0.5m)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 17mm), heaviest on Mon afternoon. Very mild (max 17°C on Wed night, min 12°C on Tue night). Winds increasing (calm on Mon afternoon, strong winds from the WNW by Wed night).

Mon
29
Tuesday
30
Wednesday
1
Thu
2
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)
2
1
1
0
1
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)
1.1
NW
11
0.9
WNW
11
0.9
NW
10
0.8
WNW
10
0.7
NW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
9
0.6
WNW
9
0.5
NW
9
0.5
NW
9
0.4
WNW
9
0.4
WNW
8
0.6
WNW
8
0.5
NW
8
0.4
WNW
8
0.5
NW
7
0.4
NW
7
0.4
NW
7
0.6
WNW
9
1.7
WNW
10
1.6
NW
9
1.6
NW
9
1.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
273
200
148
125
98
63
61
59
56
40
39
31
28
45
33
26
23
12
14
65
561
415
393
299
Wind (km/h)
5
S
10
ENE
10
S
20
SE
20
SSE
20
SSE
15
SE
10
SSE
15
N
15
N
10
NNW
10
NW
15
NW
10
W
10
WNW
5
S
15
SSE
30
S
30
SW
40
WSW
45
WNW
30
WNW
30
WNW
25
WNW
Wind State
glassy
cross
off
cross-off
off
off
cross-off
off
on
on
on
cross-on
cross-on
cross
cross
off
off
off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
High Tide
6:55PM1.63m
7:03AM1.47m
7:29PM1.68m
7:35AM1.48m
8:04PM1.71m
8:06AM1.48m
Low Tide
1:29AM0.36m
1:27PM0.26m
2:05AM0.36m
2:00PM0.22m
2:41AM0.37m
light rain
light rain
light rain
cloud
light rain
light rain
light rain
rain showers
rain showers
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
light rain
part cloud
light rain
light rain
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:50
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:09
10:09
10:09
10:08
 mm
1
2
2
1
2
2
1
2
2
1
1
Temp °C
16
15
13
13
13
13
13
15
15
14
13
13
13
12
13
15
14
14
17
15
13
13
14
15
Feels °C
16
13
11
10
9
10
11
15
14
12
12
11
11
10
12
14
12
8
13
8
5
7
9
10
Swell 1
Height (m)
Direction
Period (s)
1.1
NW
11
0.9
WNW
11
0.9
NW
10
0.8
WNW
10
0.7
NW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
9
0.6
WNW
9
0.5
NW
9
0.5
NW
9
0.4
WNW
9
0.4
WNW
8
0.6
WNW
8
0.5
NW
8
0.4
WNW
8
0.5
NW
7
0.4
NW
7
0.4
NW
7
0.6
WNW
9
0.1
SE
4
Energy kJ
273
200
148
125
98
63
61
59
56
40
39
31
28
45
33
26
23
12
14
65
1
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
3
0.2
ESE
5
0.2
E
4
0.3
NW
7
0.2
NNW
7
0.2
NNW
7
0.2
NNW
7
0.4
NW
7
0.1
NW
7
0.2
WNW
9
Energy kJ
1
3
1
9
5
4
5
12
2
8
Swell 3
Height (m)
Direction
Period (s)
0.1
W
14
0.1
W
13
0.1
W
12
Energy kJ
4
3
3
Wind waves
Height (m)
Direction
Period (s)
0.3
SE
2
0.4
SE
3
0.4
SE
3
0.3
NW
3
0.3
S
2
0.4
S
3
0.5
SW
3
1.7
WNW
10
1.6
NW
9
1.6
NW
9
1.5
NW
8
Energy kJ
1
2
2
1
1
2
4
561
415
393
299
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
1
2
1
2
1
1
Distance (km)
0
2
0
2
0
0
2
8
63
66
79
157
27
27
42
16
74
336
356
334
380
380
339
180
Best forecast wave conditions in Londonderry
Rating
(10 max)
2
2
1
1
1
1
1
Best forecast wave conditions in Ireland
Rating
(10 max)
2
3
2
2
1
2
2
1
1
3
3
3
2
2
2
2
2
2
4
4
Header Global
Rating
(10 max)
5
6
6
5
5
5
5
5
5
5
4
5
5
5
5
5
5
4
4
5
5
5
5
7
  • 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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