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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 pm Wednesday 30 Apr 2025 BST
How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 6PM is: 0.5m 10s primary swell from a Northwest direction (forecast issued at 12:00pm April 30). An open ocean swell of 0.1m 3s is not directed at the surf break, a second open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 2ft (0.6m) | 10s |
| Afternoon (30 Apr) | 1.5ft (0.5m) | 10s |
| Evening (30 Apr) | 1.5ft (0.5m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Wednesday 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |    |    |    |    |    |    |    |    | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 69 | 48 | 47 | 43 | 41 | 31 | 20 | 145 | 553 | 868 | 1063 | 1238 | 1179 | 1144 | 1092 | 855 | 699 | 515 | 399 | 377 | 273 | 204 | 192 | 129 | 120 | 135 | 136 | 149 | 106 | 158 | 178 | 177 | 153 | 167 | 158 | 176 | 175 | 152 | 108 | 70 | 37 | 34 | 30 | 17 | 24 | 47 | 83 | 97 | 78 | 78 | 78 | 78 | 57 | 47 | 49 | 57 | 54 | 100 | 173 | 264 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross | cross | cross | cross | cross- on |
High Tide / height (m) | 8:24AM 1.78 | 8:43PM 1.83 | 9:07AM 1.57 | 9:29PM 1.73 | 9:53AM 1.35 | 10:24PM 1.59 | 10:47AM 1.15 | 11:39PM 1.46 | 12:11PM 1.01 | 1:28AM 1.40 | 2:19PM 1.00 | 3:00AM 1.45 | 3:34PM 1.09 | 3:56AM 1.52 | 4:20PM 1.21 | |||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 2:38PM 0.16 | 3:14AM 0.16 | 3:18PM 0.28 | 4:12AM 0.33 | 4:04PM 0.40 | 5:23AM 0.50 | 5:04PM 0.52 | 6:53AM 0.61 | 6:25PM 0.59 | 8:33AM 0.62 | 7:56PM 0.59 | 9:49AM 0.56 | 9:13PM 0.53 | 10:37AM 0.48 | ||||||||||||||||||||||||||||||||||||||||||||||
Wednesday 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:35 | - | - | - | - |
| Sunset | - | - | - | 9:00 | - | - | - | - | - | - | - | 9:01 | - | - | - | - | - | - | - | 9:04 | - | - | - | - | - | - | - | 9:06 | - | - | - | - | - | - | - | 9:07 | - | - | - | - | - | - | - | 9:08 | - | - | - | - | - | - | - | 9:10 | - | - | - | - | - | - | - | 9:13 |
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Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 19 | 20 | 19 | 15 | 13 | 11 | 10 | 10 | 9 | 11 | 11 | 9 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 8 | 8 | 8 | 8 | 10 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 8 | 7 | 8 | 8 | 7 | 7 | 7 | 6 | 8 | 8 | 9 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 9 | 11 | 12 | 12 | 11 |
| Feels °C (?) | 13 | 16 | 17 | 18 | 14 | 12 | 9 | 8 | 7 | 5 | 6 | 6 | 5 | 5 | 4 | 5 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 6 | 4 | 2 | 3 | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 2 | 3 | 5 | 5 | 5 | 5 | 6 | 5 | 5 | 6 | 6 | 5 | 5 | 4 | 5 | 4 | 5 | 5 | 4 |
- Map Icons:
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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