Castlerock Surf Break

Castlerock Surf Forecast and Surf Report

Lat Long: 55.17° N 6.78° W

Issued: 6 pm 11 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
12.5° C

Slightly warmer than usual

Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Castlerock surf forecast from 11 Jun 2026:

  • Most powerful swell: Saturday 13 Jun, 1AM (local time) - 7ft (2.1m), 12s period, WNW swell with 1,320 kJ wave energy.

Best Forecast Surf Conditions for Castlerock this week:

The most powerful waves expected at Castlerock in the next 16 days are 2.1m 12s and forecast to arrive on Saturday (Jun 13) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Tuesday (Jun 16) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Sat 13th Jun)7ft (2.1m) 12s

Table - best surf conditions forecast for Castlerock over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 15°C on Thu afternoon, min 10°C on Sat night). Winds increasing (light winds from the SW on Thu night, strong winds from the WSW by Fri afternoon).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Tue night. Very mild (max 18°C on Mon afternoon, min 10°C on Sun night). Wind will be generally light.

Thu
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
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
Wave
Height (m)
Direction
Period (s)
0.8
WNW
9
0.9
WNW
8
0.7
WNW
7
1.2
WNW
8
2.1
WNW
12
1.9
WNW
12
1.7
NW
11
1.2
NW
8
1.1
NNW
8
0.9
NNW
8
0.6
NNW
5
0.5
N
5
0.4
NNW
5
0.1
W
12
0.2
W
12
0.2
W
11
0.2
W
12
0.2
WNW
11
0.2
W
10
0.2
W
10
0.2
WNW
11
Wave Graph
Metric surfscale
Energy kJ
94
105
46
159
1320
972
702
164
138
102
20
14
8
3
11
9
11
12
8
8
11
Wind (km/h)
25
W
25
WSW
30
WSW
40
WSW
35
W
35
W
40
WNW
25
WNW
20
NNW
15
NNW
5
WSW
5
S
10
SSE
15
SSE
10
S
15
SSE
10
SE
15
SSW
10
N
10
S
15
S
Wind State
cross
cross-off
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
on
glassy
off
off
cross-off
off
cross-off
cross-off
cross-off
on
off
off
High Tide
4:10AM1.64m
4:44PM1.49m
5:04AM1.70m
5:33PM1.64m
5:55AM1.74m
6:21PM1.77m
6:44AM1.74m
7:08PM1.87m
7:31AM1.69m
7:56PM1.93m
8:17AM1.61m
8:46PM1.94m
9:03AM1.50m
Low Tide
9:46PM0.43m
10:42AM0.30m
10:50PM0.33m
11:31AM0.22m
11:49PM0.23m
12:18PM0.17m
00:46AM0.15m
1:03PM0.13m
1:42AM0.11m
1:48PM0.12m
2:36AM0.12m
2:33PM0.12m
3:30AM0.18m
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
clear
part cloud
light rain
part cloud
part cloud
light rain
light rain
part cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:47
4:47
4:46
4:46
4:46
4:46
4:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:05
10:06
10:07
10:07
10:07
10:08
10:08
10:09
 mm
1
1
4
Temp °C
15
13
14
14
12
13
13
11
11
12
11
16
18
14
17
18
14
18
16
14
16
Feels °C
11
10
8
6
4
5
5
6
7
9
9
14
16
11
17
16
15
15
15
13
13
Swell 1
Height (m)
Direction
Period (s)
0.8
WNW
9
0.9
WNW
8
0.4
WNW
9
0.4
WNW
13
0.6
WNW
10
0.4
WNW
9
0.3
WNW
9
0.6
NNW
5
0.5
N
5
0.4
NNW
5
0.2
NNW
5
0.2
E
3
0.2
E
3
0.2
E
3
0.2
WNW
11
0.2
W
10
0.2
W
10
0.2
WNW
11
Energy kJ
94
105
30
64
69
34
16
20
14
8
2
1
1
1
12
8
8
11
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
3
0.1
NW
12
0.3
NNW
7
0.1
NW
7
0.1
W
10
0.1
W
12
0.2
W
12
0.2
W
11
0.2
W
12
0.2
E
3
Energy kJ
1
5
10
2
2
3
11
9
11
1
Swell 3
Height (m)
Direction
Period (s)
0.1
W
15
0.2
WNW
8
0.1
W
11
0.1
NW
7
0.1
W
7
0.1
N
5
Energy kJ
4
7
2
2
1
1
Wind waves
Height (m)
Direction
Period (s)
0.5
W
3
0.7
WNW
7
1.2
WNW
8
2.1
WNW
12
1.9
WNW
12
1.7
NW
11
1.2
NW
8
1.1
NNW
8
0.9
NNW
8
0.2
ESE
4
0.3
ESE
3
0.3
SE
3
Energy kJ
5
46
159
1320
972
702
164
138
102
1
2
1
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
336
187
772
742
364
387
528
187
71
131
40
40
40
40
40
40
40
42
42
40
56
Best forecast wave conditions in Londonderry
Rating
(10 max)
Best forecast wave conditions in Ireland
Rating
(10 max)
2
4
4
3
2
1
1
1
1
2
1
1
2
1
1
2
2
Header Global
Rating
(10 max)
6
6
9
5
5
5
4
7
5
9
4
5
5
5
5
5
5
4
5
6
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
submit an eyeball surf report

Quick surf report for Castlerock:

join our community of surf reporters

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.


Information about the Castlerock Surf forecast

The above surf forecast table for Castlerock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castlerock can be found by selecting the local surf guide option on the grey menu. Our Castlerock surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Castlerock) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Castlerock may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Londonderry? If you are looking for accommodation near Castlerock, camping, hotels and holiday cottages in Londonderry, consider staying in Coleraine which is 8 km (5 miles) away. Other places in and around Londonderry where you can find information about places to rent, and car hire include Ballycastle which is 34 km (21 miles) away, Ballypatrick, Londonderry County Borough and Derry.

Nearest locationNearest