Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 6 pm Sunday 31 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castlerock sea temperature is
12.1° C
(Which is slightly warmer than usual)

How big are the waves at Castlerock today (01 Jun):

  • Morning surf: Morning surf (01 Jun, local time) - 0.5ft (0.2m), 11s period with W swell.
  • Afternoon surf: Afternoon surf (01 Jun, local time) - 0.5ft (0.2m), 11s period with W swell.
  • Evening surf: Evening surf (01 Jun, local time) - 0.5ft (0.2m), 10s period with W swell.

The current surf forecast for Castlerock at 1AM is: 0.2m 12s primary swell from a West-northwest direction and 0.2m 6s secondary swell from a West-northwest direction (forecast issued at 06:00pm May 31). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (01 Jun)0.5ft (0.2m)11s
Afternoon (01 Jun)0.5ft (0.2m)11s
Evening (01 Jun)0.5ft (0.2m)10s

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 13mm), heaviest on Mon afternoon. Very mild (max 16°C on Sun afternoon, min 10°C on Tue night). Wind will be generally light.

Sun
31
Monday
1
Tuesday
2
Wed
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
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.3
WNW
13
0.3
WNW
12
0.2
WNW
12
0.2
WNW
12
0.2
W
12
0.2
W
12
0.2
W
11
0.2
W
11
0.2
W
11
0.2
W
11
0.2
W
10
0.2
W
10
0.2
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
11
0.1
NW
16
0.2
WNW
15
0.3
WNW
14
0.3
WNW
13
0.3
WNW
13
Wave Graph
Metric surfscale
Energy kJ
33
30
14
14
11
11
10
9
9
9
8
8
8
2
2
2
2
2
2
10
21
40
35
34
Wind (km/h)
10
WNW
5
NNW
10
ESE
15
SSE
15
S
15
S
10
SSW
5
S
5
SE
0
SE
10
WSW
10
SW
10
W
15
NW
15
WNW
15
NW
15
NNW
10
NW
5
WSW
15
S
15
SSE
20
SSE
25
SSE
15
S
cross
glassy
cross-off
cross-off
off
off
off
glassy
cross-off
glassy
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
off
off
cross-off
off
off
High Tide
7:04PM1.66m
7:15AM1.51m
7:37PM1.67m
7:47AM1.48m
8:12PM1.65m
8:19AM1.43m
Low Tide
1:02PM0.27m
1:33AM0.32m
1:34PM0.28m
2:10AM0.35m
2:07PM0.29m
2:47AM0.40m
part cloud
cloud
rain showers
cloud
light rain
part cloud
cloud
light rain
light rain
rain showers
rain showers
cloud
part cloud
cloud
cloud
cloud
cloud
rain showers
clear
part cloud
cloud
light rain
rain showers
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:54
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:53
9:54
9:55
9:57
1
1
1
3
2
1
1
1
2
Temp °C
16
14
13
13
13
14
15
15
15
15
14
13
13
12
12
13
13
13
13
11
11
10
11
13
13
13
11
11
11
12
14
15
15
16
13
12
12
10
10
10
11
11
12
8
8
6
7
11
Swell 1
Height (m)
Direction
Period (s)
0.3
WNW
13
0.3
WNW
6
0.3
WNW
6
0.2
WNW
6
0.2
WNW
5
0.2
WNW
5
0.2
W
11
0.2
WNW
5
0.2
WNW
5
0.2
W
11
0.2
W
10
0.2
W
10
0.2
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.2
WNW
15
0.3
WNW
14
0.3
WNW
13
0.3
WNW
13
Energy kJ
33
7
7
3
3
3
10
3
3
9
8
8
8
2
2
2
2
2
21
40
35
34
Swell 2
Height (m)
Direction
Period (s)
0.1
N
8
0.3
WNW
12
0.2
WNW
12
0.2
WNW
12
0.2
W
12
0.2
W
12
0.2
WNW
5
0.2
W
11
0.2
W
11
0.1
NW
5
0.1
NW
5
0.1
W
11
0.1
NW
16
0.2
WNW
4
0.2
WNW
5
0.2
WNW
5
0.2
ESE
3
Energy kJ
1
30
14
14
11
11
2
9
9
1
1
2
10
2
2
3
1
Swell 3
Height (m)
Direction
Period (s)
0.1
N
8
0.1
N
8
0.1
N
7
0.1
N
7
0.1
N
7
0.1
N
7
0.1
N
7
0.1
N
6
0.1
N
6
0.1
W
6
0.1
W
12
0.1
W
6
Energy kJ
1
1
1
1
1
1
1
1
1
1
3
1
Wind waves
Height (m)
Direction
Period (s)
0.4
WNW
6
0.2
W
5
0.2
WNW
3
0.3
NW
3
0.3
NW
2
0.2
NNW
2
0.2
NNW
3
0.4
SE
3
Energy kJ
12
2
1
1
1
1
1
2
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
3
2
1
Distance (km)
162
70
40
40
41
40
42
40
40
40
42
42
71
101
42
42
42
157
42
42
16
40
83
14
Best forecast wave conditions in Londonderry
Rating
(10 max)
Best forecast wave conditions in Ireland
Rating
(10 max)
3
3
3
2
2
3
2
2
2
2
2
2
2
1
2
1
1
2
1
2
3
3
3
1
Header Global
Rating
(10 max)
6
5
5
5
5
5
5
4
5
5
5
8
5
4
6
4
5
4
5
5
5
4
4
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

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