Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 5 am Thursday 15 Jan 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
9.0° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 11AM is: 1.6m 18s primary swell from a Northwest direction and 0.6m 8s secondary swell from a West-northwest direction (forecast issued at 05:00am January 15). The wind direction is predicted to be offshore and the swell rating is 4.

Time (GMT) & DateWave HeightWave Period
Morning (15 Jan)4.5ft (1.4m)18s
Afternoon (15 Jan)6ft (1.8m)18s
Evening (15 Jan)6ft (1.8m)17s

Table - waves today at Castlerock. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Thursday
15
Friday
16
Saturday
17
Sun
18
3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM
Rating
(10 max)
1
2
4
4
4
4
4
4
3
3
2
3
3
3
3
3
1
1
1
1
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.3
NW
0.8
NW
1.4
NW
1.8
NW
1.8
NW
1.7
NW
1.8
NW
1.6
NW
1.6
NW
1.5
NW
1.4
NW
1.4
NW
1.3
WNW
1.2
NW
1.2
WNW
1.2
WNW
1
WNW
0.9
WNW
0.8
WNW
0.8
WNW
0.7
WNW
0.7
WNW
0.6
WNW
0.6
WNW
Period(s) (?)232118181817171616161515151515141413131312121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)82508135619251904171718181419135011018607957306405845614073132192121311259182
Wind
(km/h)
20
SSW
25
SW
20
SSW
15
SSW
15
S
15
S
15
S
20
SSE
15
SSE
15
SSE
15
SSE
15
SE
15
SE
10
SSE
10
SE
15
SE
20
SE
20
SE
15
ESE
20
SE
20
ESE
20
ESE
20
SE
20
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		offoffoffoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
4:09AM
1.34
4:21PM
1.31
4:48AM
1.46
4:57PM
1.39
5:23AM
1.57
5:29PM
1.47
Low Tide
/ height (m)
10:36AM
0.55
10:44PM
0.45
11:18AM
0.46
11:22PM
0.34
11:55AM
0.38
11:55PM
0.24
Thursday
15
Friday
16
Saturday
17
Sun
18
Sunrise--8:44-------8:42-------8:41-----
Sunset----4:28-------4:30-------4:31---
cloud
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
rain showers
rain showers
rain showers
part cloud
clear
clear
Rain (mm)
------------------111---
Temp. °C654564444446765566677765
Feels °C (?)0-1-101-1-1-1-1-1-12322111222210
  • 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

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

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.

View detailed surf forecast for Castlerock at:
surf-forecast.com

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest