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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Friday 18 Apr 2025 BST
How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 1AM is: 1.3m 5s primary swell from a East direction and 0.8m 8s secondary swell from a North-northwest direction, 0.1m 12s secondary swell from a West direction (forecast issued at 06:00pm April 18). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Apr) | 4.5ft (1.3m) | 5s |
| Afternoon (19 Apr) | 1.5ft (0.5m) | 8s |
| Evening (19 Apr) | 1.5ft (0.4m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Sat 26 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 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 | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |    |    |    |    |    |    |    |    |    | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 5 | 5 | 6 | 5 | 8 | 8 | 8 | 8 | 9 | 9 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 12 | 13 | 12 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 4 | 9 | 10 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 59 | 77 | 64 | 92 | 101 | 90 | 33 | 31 | 33 | 24 | 25 | 25 | 14 | 14 | 13 | 13 | 12 | 9 | 9 | 2 | 2 | 2 | 3 | 3 | 30 | 63 | 115 | 109 | 111 | 107 | 105 | 105 | 68 | 66 | 45 | 36 | 20 | 19 | 18 | 8 | 8 | 9 | 27 | 25 | 25 | 24 | 12 | 12 | 12 | 12 | 24 | 54 | 80 | 70 | 68 | 67 | 65 | 50 | 49 | 28 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | off | cross- off | cross | cross- off | off | off | off | cross- off | cross | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross- on | on | on | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 9:51PM 1.41 | 10:00AM 1.25 | 10:43PM 1.29 | 10:52AM 1.13 | 12:08AM 1.22 | 12:35PM 1.05 | 2:09AM 1.27 | 2:42PM 1.10 | 3:24AM 1.45 | 3:51PM 1.24 | 4:14AM 1.66 | 4:39PM 1.40 | 4:56AM 1.85 | 5:21PM 1.56 | ||||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 3:25PM 0.47 | 4:03AM 0.62 | 4:04PM 0.56 | 5:11AM 0.74 | 5:20PM 0.64 | 7:23AM 0.77 | 7:22PM 0.65 | 9:09AM 0.67 | 8:52PM 0.57 | 10:11AM 0.49 | 9:52PM 0.44 | 10:56AM 0.30 | 10:40PM 0.29 | 11:35AM 0.14 | 11:23PM 0.15 | |||||||||||||||||||||||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Sat 26 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - |
| Sunset | - | 8:36 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - | - | - | 8:50 | - | - |
 | |  |  | |  | | | | | |  | |  |  | | | | | | | | | | |  |  | | | | | | | | | | | |  | | | | | | | | | | | |  | | | | | | | | | | |
Rain (mm) | 7 | 6 | 6 | 3 | 1 | 2 | 3 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | 2 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 8 | 9 | 8 | 7 | 7 | 7 | 8 | 9 | 9 | 9 | 8 | 8 | 7 | 8 | 10 | 12 | 10 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | 9 | 8 | 7 | 6 | 6 | 9 | 9 | 10 | 9 | 9 | 10 | 9 | 9 | 10 | 12 | 13 | 11 | 11 | 10 | 9 | 7 | 8 | 11 | 12 | 11 | 10 | 9 | 8 | 7 | 8 | 10 | 12 | 11 | 10 | 9 |
| Feels °C (?) | 0 | 1 | 2 | 1 | 0 | 0 | 0 | 1 | 2 | 3 | 3 | 2 | 2 | 1 | 2 | 5 | 7 | 5 | 5 | 4 | 5 | 6 | 7 | 7 | 6 | 6 | 5 | 4 | 2 | 2 | 6 | 5 | 4 | 3 | 5 | 5 | 4 | 4 | 5 | 8 | 9 | 7 | 9 | 8 | 6 | 3 | 5 | 9 | 8 | 8 | 7 | 6 | 4 | 3 | 3 | 7 | 9 | 8 | 7 | 6 |
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Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
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