Castlerock Surf Break
Lat Long: 55.17° N 6.78° W

Castlerock Surf Forecast and Surf Report

Weather Forecast for Castlerock

Issued: 6 am 03 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castlerock sea temperature is
12.3° C

1.0°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 3 Jun 2026:

  • Best quality surf: Friday 5 Jun, 1PM (local time) - 3.5ft (1.1m), 11s period, NW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 10 Jun, 1PM (local time) - 4.5ft (1.3m), 12s period, WNW swell with 517 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 3 Jun, 10PM (local time) - 1.5ft (0.5m), 12s period with W 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 Wednesday (Jun 03) at 10PM. The primary swell is predicted to be 0.5m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Castlerock in the next 16 days are 1.3m 12s and forecast to arrive on Wednesday (Jun 10) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Jun 06) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 3rd Jun)1.5ft (0.5m) 12s
Best Surf 1PM (Fri 5th Jun)3.5ft (1.1m) 11s
Most Powerful 1PM (Wed 10th Jun)4.5ft (1.3m) 12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 16mm), heaviest on Wed morning. Very mild (max 13°C on Wed morning, min 9°C on Thu night). Winds decreasing (strong winds from the W on Thu night, light winds from the S by Fri afternoon).

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Sat morning. Very mild (max 14°C on Sun afternoon, min 8°C on Mon night). Winds decreasing (strong winds from the SE on Sat morning, calm by Sun night).

Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
1
2
0
0
0
0
0
1
1
0
0
1
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
WNW
13
0.3
WNW
13
0.4
WNW
12
0.9
NW
5
0.9
WNW
5
1.8
WNW
9
1.3
NW
11
1.1
NW
11
0.9
NW
10
0.7
WNW
11
0.6
WNW
11
0.4
WNW
10
0.9
WNW
10
0.8
NW
6
0.4
WNW
10
0.6
WNW
9
0.9
WNW
11
1.3
WNW
11
0.9
WNW
10
0.7
NW
10
0.7
WNW
9
Wave Graph
Metric surfscale
Energy kJ
35
33
46
40
40
497
396
268
154
103
76
43
137
43
42
59
183
396
182
98
78
Wind (km/h)
25
SSE
25
SW
30
SSW
30
WNW
35
WNW
35
W
20
WSW
10
S
25
SE
40
SE
40
WSW
20
SE
30
W
10
SW
5
SSW
25
SW
30
W
15
SW
20
SW
20
S
30
SSW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
off
cross-off
High Tide
8:49PM1.62m
8:52AM1.38m
9:29PM1.57m
9:28AM1.32m
10:12PM1.52m
10:09AM1.26m
10:59PM1.47m
11:00AM1.19m
11:55PM1.45m
12:07PM1.15m
00:59AM1.45m
1:30PM1.15m
2:07AM1.49m
Low Tide
2:41PM0.31m
3:27AM0.48m
3:16PM0.34m
4:09AM0.55m
3:53PM0.37m
4:56AM0.61m
4:35PM0.42m
5:49AM0.63m
5:24PM0.47m
6:49AM0.61m
6:23PM0.52m
7:52AM0.56m
7:29PM0.53m
light rain
light rain
light rain
light rain
light rain
rain showers
rain showers
light rain
light rain
light rain
rain showers
rain showers
light rain
light rain
rain showers
rain showers
light rain
part cloud
part cloud
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:50
4:50
4:50
4:48
4:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:57
9:59
10:00
10:00
10:01
10:02
10:04
 mm
3
2
3
2
1
1
1
2
1
1
1
1
1
2
2
1
2
3
2
Temp °C
13
13
12
12
13
11
13
13
12
12
12
12
13
14
11
13
13
11
15
13
15
Feels °C
9
9
8
7
6
3
10
11
8
5
5
8
8
11
10
7
6
7
11
9
10
Swell 1
Height (m)
Direction
Period (s)
0.3
WNW
13
0.3
WNW
13
0.4
WNW
12
0.3
WNW
12
0.3
WNW
13
0.7
WNW
14
1.3
NW
11
1.1
NW
11
0.9
NW
10
0.7
WNW
11
0.6
WNW
11
0.4
WNW
10
0.8
NW
6
0.5
NW
7
0.6
WNW
9
0.9
WNW
11
1.3
WNW
11
0.9
WNW
10
0.7
NW
10
0.7
WNW
9
Energy kJ
35
33
46
27
35
166
396
268
154
103
76
43
43
22
59
183
396
182
98
78
Swell 2
Height (m)
Direction
Period (s)
0.2
WNW
7
0.3
ESE
4
0.2
WNW
8
0.1
W
18
0.1
NW
13
0.2
WNW
13
0.1
NW
12
0.2
E
4
0.1
W
15
0.4
WNW
10
0.4
WNW
10
0.2
WNW
12
Energy kJ
5
3
7
6
7
18
6
1
4
39
42
15
Swell 3
Height (m)
Direction
Period (s)
0.2
WNW
6
Energy kJ
4
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.3
SW
2
0.4
SSW
3
0.9
NW
5
0.9
WNW
5
1.8
WNW
9
0.4
SE
3
1.2
ESE
5
1
ESE
5
0.9
WNW
10
0.4
SSW
3
0.5
W
3
0.3
SW
2
0.2
SSW
2
0.4
SE
3
0.3
SSE
4
Energy kJ
2
1
3
40
40
497
2
72
49
137
2
5
1
1
2
2
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
1
1
1
2
2
1
3
3
1
3
1
1
1
1
1
1
1
1
Distance (km)
83
42
162
266
309
347
9
0
2
336
336
16
187
0
0
9
366
9
9
0
25
Best forecast wave conditions in Londonderry
Rating
(10 max)
2
1
1
1
1
1
Best forecast wave conditions in Ireland
Rating
(10 max)
2
2
2
2
4
1
3
4
1
3
1
2
3
1
1
Header Global
Rating
(10 max)
5
5
5
4
5
5
5
9
7
5
9
8
6
8
9
6
6
7
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)
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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.

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