Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle12 Day Weather and Surf, issued 11 pm Tuesday 03 Feb 2026 GMT
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
8.5° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Castlerock this week:

The most powerful waves expected at Castlerock in the next 12 days are 0.9m 20s and forecast to arrive on Thursday (Feb 05) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 7s period and expected on Thursday (Feb 05) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful12PM (Thu 5th Feb)3ft (0.9m) 20s

Table - best surf conditions forecast for Castlerock over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 9mm), mostly falling on Thu morning. Mild temperatures (max 7°C on Wed night, min 3°C on Tue night). Winds increasing (moderate winds from the ESE on Wed morning, near gales from the E by Thu morning).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Fri night. Mild temperatures (max 8°C on Mon afternoon, min 4°C on Fri night). Winds decreasing (strong winds from the E on Fri night, light winds from the SE by Sat night).

Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tue
10
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
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
Wave Height (m) & direction (?)
0.4
WNW
0.3
WNW
0.3
WNW
0.1
NW
0.6
NW
0.9
NW
0.7
NW
0.6
WNW
0.4
WNW
1.7
E
1.3
E
1
E
0.2
WNW
0.2
WNW
0.2
WNW
0.3
WNW
0.2
WNW
1.1
E
0.6
WNW
0.8
WNW
0.7
NW
Period(s) (?)15141325211917161565513121212115211817
Wave
Graph
(?)Metric surfscale
Energy kJ (?)84383424358529302169882049749161414281262305422298
Wind
(km/h)
30
ESE
25
ESE
25
E
35
E
55
E
50
E
45
E
50
E
45
E
35
E
30
ESE
25
ESE
10
ESE
15
SSE
25
SE
35
ESE
35
E
30
E
25
ESE
30
SE
35
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
crosscrosscrosscross-
off
crosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross-
off
cross-
off
cross-
off
High Tide
/ height (m)
7:34AM
2.04
7:38PM
1.60
8:08AM
1.96
8:10PM
1.54
8:40AM
1.81
8:41PM
1.47
9:10AM
1.64
9:13PM
1.38
9:41AM
1.45
9:47PM
1.28
10:14AM
1.27
10:32PM
1.17
11:05AM
1.11
Low Tide
/ height (m)
1:19AM
-0.04
2:07PM
0.15
1:52AM
-0.01
2:39PM
0.23
2:25AM
0.09
3:09PM
0.33
2:58AM
0.22
3:39PM
0.44
3:33AM
0.38
4:10PM
0.55
4:14AM
0.55
4:50PM
0.66
5:14AM
0.70
6:00PM
0.75
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tue
10
Sunrise-8:12--8:11--8:08--8:07--8:04--8:03--8:00-
Sunset--5:07--5:09--5:12--5:15--5:16--5:19--5:21
light rain
cloud
cloud
part cloud
light rain
light rain
light rain
light rain
cloud
light rain
light rain
cloud
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
light rain
Rain (mm)
3---2211-11---------2
Temp. °C456765655455567778777
Feels °C (?)-4-2-1-2-6-7-4-6-5-5-2-10110-1100-2
  • 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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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 12 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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