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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 am Friday 03 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
8.4° C
(Which is normal for this time of year)How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 7AM is: 1.3m 14s primary swell from a Northwest direction (forecast issued at 12:00am April 03). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Apr) | 4.5ft (1.3m) | 13s |
| Afternoon (03 Apr) | 4.5ft (1.3m) | 13s |
| Evening (03 Apr) | 3.5ft (1.0m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 03 | Saturday 04 | Sunday 05 | ||||||||||||||||||||||
| 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 | 16 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 180 | 628 | 658 | 595 | 569 | 560 | 700 | 394 | 273 | 297 | 1314 | 1254 | 1187 | 984 | 957 | 904 | 1864 | 725 | 715 | 704 | 628 | 553 | 545 | 1127 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- on | cross- on | cross- off | cross- on | cross | cross | cross- off | cross- off | off | off | cross- off | cross- off | off | cross- off | cross- on | cross- on | cross | cross- off | cross | cross | cross | cross |
High Tide / height (m) | 7:16PM 1.71 | 7:34AM 1.88 | 7:44PM 1.73 | 8:01AM 1.78 | 8:12PM 1.71 | 8:28AM 1.66 | ||||||||||||||||||
Low Tide / height (m) | 1:30AM 0.05 | 1:56PM 0.13 | 2:01AM 0.10 | 2:19PM 0.18 | 2:31AM 0.18 | 2:42PM 0.26 | ||||||||||||||||||
Friday 03 | Saturday 04 | Sunday 05 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:50 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:10 |
 | | |  | | |  |  |  | |  |  | | | | | |  | | | | | |  | |
Rain (mm) | 1 | 1 | 1 | 1 | 1 | 4 | 1 | - | - | - | - | - | 1 | 5 | 1 | 4 | 5 | 1 | - | - | 2 | 1 | 1 | - |
| Temp. °C | 8 | 9 | 7 | 7 | 6 | 5 | 7 | 7 | 5 | 4 | 4 | 4 | 3 | 4 | 10 | 9 | 4 | 5 | 5 | 3 | 5 | 6 | 7 | 7 |
| Feels °C (?) | 2 | 4 | 3 | 3 | 3 | -3 | -2 | -2 | -2 | -2 | -1 | -1 | -2 | -3 | 1 | 1 | -8 | -6 | -2 | -3 | -3 | -4 | -2 | 0 |
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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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