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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 am Thursday 02 Apr 2026 BSTForecast 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
8.3° C
(Which is normal for this time of year)How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 5AM is: 1.3m 9s primary swell from a North-northwest direction and 0.6m 13s secondary swell from a North-northwest direction (forecast issued at 12:00am April 02). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Apr) | 4.5ft (1.3m) | 13s |
| Afternoon (02 Apr) | 3.5ft (1.1m) | 11s |
| Evening (02 Apr) | 3ft (0.9m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 02 | Friday 03 | Saturday 04 | ||||||||||||||||||||||
| 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) (?) | 11 | 9 | 9 | 13 | 13 | 12 | 11 | 11 | 10 | 16 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 16 | 15 | 15 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 163 | 422 | 320 | 222 | 527 | 403 | 246 | 191 | 177 | 546 | 529 | 548 | 451 | 444 | 700 | 623 | 527 | 486 | 1215 | 1339 | 1254 | 1108 | 1077 | 970 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | off | off | off | off | off | off | off | cross | cross | cross- off | cross | cross | cross | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | cross- off |
High Tide / height (m) | 7:06AM 1.93 | 7:16PM 1.71 | 7:34AM 1.88 | 7:44PM 1.73 | 8:01AM 1.78 | |||||||||||||||||||
Low Tide / height (m) | 1:00AM 0.05 | 1:32PM 0.10 | 1:30AM 0.05 | 1:56PM 0.13 | 2:01AM 0.10 | 2:19PM 0.18 | ||||||||||||||||||
Thursday 02 | Friday 03 | Saturday 04 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:52 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:05 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:08 |
 | |  |  |  | | | |  | |  | |  | |  |  |  | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | 1 | 1 | - | 1 | 1 | 1 | - | - | - | - | - | 1 | 6 | 2 | 1 |
| Temp. °C | 7 | 6 | 5 | 4 | 6 | 8 | 6 | 6 | 7 | 9 | 7 | 7 | 6 | 7 | 8 | 7 | 5 | 4 | 4 | 4 | 3 | 5 | 11 | 8 |
| Feels °C (?) | 1 | 1 | 1 | 0 | 1 | 2 | 0 | -1 | 0 | 3 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | -1 | -1 | -1 | -3 | -3 | 3 | -2 |
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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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