Castlerock Surf Break

Castlerock Surf Forecast and Surf Report

Lat Long: 55.17° N 6.78° W

Issued: 6 pm 26 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
14.0° C

1.3°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.


Castlerock surf forecast from 26 Jun 2026:

  • Best quality surf: Monday 29 Jun, 1PM (local time) - 4.5ft (1.3m), 12s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Sunday 28 Jun, 10PM (local time) - 4.5ft (1.4m), 13s period, WNW swell with 649 kJ wave energy.
  • Next surfable swell (1★+): Monday 29 Jun, 1PM (local time) - 4.5ft (1.3m), 12s period with WNW swell.

Best Forecast Surf Conditions for Castlerock this week:

The surf forecast for Castlerock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jun 29) at 1PM. The primary swell is predicted to be 1.3m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Castlerock in the next 16 days are 1.4m 13s and forecast to arrive on Sunday (Jun 28) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Jun 27) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Mon 29th Jun)4.5ft (1.3m) 12s
Best Surf 1PM (Mon 29th Jun)4.5ft (1.3m) 12s
Most Powerful10PM (Sun 28th Jun)4.5ft (1.4m) 13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Fri afternoon. Very mild (max 19°C on Fri night, min 11°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Wed afternoon. Very mild (max 17°C on Mon afternoon, min 13°C on Mon night). Wind will be generally light.

Fri
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
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
2
1
1
1
1
1
0
0
0
0
0
0
1
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
NNW
5
0.4
NNW
5
0.3
WNW
9
0.4
NW
9
0.4
NW
8
0.4
WNW
8
0.4
NW
14
1.4
WNW
13
1.3
WNW
12
1.2
NW
11
0.9
NW
10
0.7
NW
10
0.6
NW
9
0.6
WNW
9
0.5
NW
8
0.4
WNW
8
0.4
NW
8
1.4
WNW
10
1.4
NW
10
1.3
NW
9
1.1
NW
8
Wave Graph
Metric surfscale
Energy kJ
39
10
17
21
18
21
49
620
472
360
148
96
70
54
35
28
17
349
380
262
142
Wind (km/h)
5
NNE
15
S
30
SSE
15
S
15
SSW
25
SSW
25
WSW
20
SW
20
SW
10
NW
5
SE
10
SSE
5
S
10
SE
15
SSE
15
SE
10
WNW
25
NW
25
NW
10
WNW
10
WNW
Wind State
on
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-on
glassy
off
off
cross-off
off
cross-off
cross-on
cross-on
cross-on
cross
cross-on
High Tide
5:04PM1.40m
5:17AM1.37m
5:43PM1.48m
5:55AM1.41m
6:19PM1.56m
6:30AM1.44m
6:55PM1.63m
7:03AM1.47m
7:29PM1.68m
7:35AM1.48m
8:04PM1.71m
8:06AM1.48m
8:39PM1.72m
8:38AM1.46m
Low Tide
11:24PM0.50m
11:37AM0.42m
00:10AM0.44m
12:16PM0.36m
00:51AM0.39m
12:52PM0.31m
1:29AM0.36m
1:27PM0.26m
2:05AM0.36m
2:00PM0.22m
2:41AM0.37m
2:31PM0.20m
3:15AM0.41m
light rain
light rain
cloud
light rain
rain showers
clear
clear
clear
cloud
rain showers
light rain
cloud
part cloud
part cloud
light rain
light rain
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:48
4:48
4:48
4:50
4:50
4:50
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:10
10:10
10:10
10:09
10:09
10:09
10:08
10:08
 mm
2
1
3
1
2
3
2
5
Temp °C
14
19
19
19
16
16
17
14
17
17
14
13
15
15
14
15
15
14
14
12
15
Feels °C
14
19
15
18
14
10
11
10
15
15
14
11
14
14
12
14
15
9
9
10
12
Swell 1
Height (m)
Direction
Period (s)
0.8
NNW
5
0.4
NNW
5
0.3
WNW
9
0.4
ESE
4
0.4
NW
8
0.4
WNW
8
0.5
W
8
1.4
WNW
13
1.3
WNW
12
1.2
NW
11
0.9
NW
10
0.7
NW
10
0.6
NW
9
0.6
WNW
9
0.5
NW
8
0.4
WNW
8
0.4
NW
8
1.3
NW
9
1.1
NW
8
Energy kJ
39
10
17
6
18
21
35
620
472
360
148
96
70
54
35
28
17
262
142
Swell 2
Height (m)
Direction
Period (s)
0.2
WNW
10
0.2
WNW
9
0.2
NNW
5
0.4
NW
9
0.2
E
4
0.2
WNW
11
0.4
WNW
11
0.3
NW
10
Energy kJ
9
8
2
21
1
12
49
17
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
3
0.2
WNW
10
0.1
E
6
0.4
NW
14
0.2
WNW
10
Energy kJ
1
10
1
49
11
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.3
SSW
3
0.3
SW
2
0.4
WSW
3
0.4
SW
3
0.3
S
2
1.4
WNW
10
1.4
NW
10
Energy kJ
3
2
1
3
2
1
349
380
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
3
2
3
1
1
1
1
1
1
1
1
4
2
1
Distance (km)
14
83
194
56
122
404
428
9
9
70
0
0
0
8
27
40
63
180
251
9
9
Best forecast wave conditions in Londonderry
Rating
(10 max)
1
1
1
Best forecast wave conditions in Ireland
Rating
(10 max)
1
1
1
1
1
3
2
3
3
2
2
2
2
1
2
1
4
3
2
Header Global
Rating
(10 max)
5
6
5
9
7
5
6
6
6
5
5
5
5
5
5
5
5
6
5
5
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