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Surf Forecasts:

Castlerock surf break

Castlerock surfForecast / Londonderry / Ireland

information circle48hr Weather and Surf, issued 11 am Monday 19 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
8.8° C
 (Which is normal for this time of year)

How big are the waves at Castlerock today?

The current surf forecast for Castlerock at 1PM is: 1.6m 17s primary swell from a Northwest direction (forecast issued at 11:00am January 19). The wind direction is predicted to be offshore and the swell rating is 4.

Time (GMT) & DateWave HeightWave Period
Morning (19 Jan)2.5ft (0.8m)19s
Afternoon (19 Jan)6ft (1.8m)16s
Evening (19 Jan)5.5ft (1.7m)16s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
3
4
4
2
2
4
4
4
2
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
NW
1.6
NW
1.8
NW
1.8
NW
1.7
NW
1.7
NW
1.8
NW
1.8
NW
1.7
NW
1.6
NW
1.4
NW
1.3
NW
1.2
NW
1.1
NW
1.1
NW
1
NW
0.9
NW
0.9
NW
0.7
NW
0.7
NW
0.7
NW
0.6
NW
0.6
NW
0.4
NW
Period(s) (?)191716161616161615151515141414131313121212121219
Wave
Graph
(?)Metric surfscale
Energy kJ (?)499157317281707147414741571151313141062856685598514410347290241152149149114110106
Wind
(km/h)
20
SSE
10
S
10
SE
30
SE
35
SE
20
S
15
SSE
15
SSE
25
ESE
40
ESE
50
ESE
45
SE
30
SE
45
SE
45
SE
35
SSE
30
SE
30
ESE
35
ESE
35
E
40
ESE
40
ESE
35
SE
35
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off		cross-
off		cross-
off		offoffoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
6:28AM
1.77
6:31PM
1.57
7:00AM
1.84
7:02PM
1.59
7:32AM
1.88
7:35PM
1.58
Low Tide
/ height (m)
1:01PM
0.29
12:55AM
0.10
1:33PM
0.27
1:22AM
0.07
2:04PM
0.27
1:50AM
0.08
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Sunrise8:38-------8:37-------8:36-------
Sunset--4:36-------4:37-------4:39-----
light rain
light rain
light rain
light rain
light rain
rain showers
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
cloud
light rain
cloud
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
Rain (mm)
133312---1212--1----2121
Temp. °C777777556778777667769999
Feels °C (?)2450-1200-1-2-4-20-3-3-2-10-2-31112
  • 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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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

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