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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 am Tuesday 24 Feb 2026 GMTForecast 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
7.9° C
(Which is normal for this time of year)How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 4PM is: 0.8m 12s primary swell from a West-northwest direction (forecast issued at 11:00am February 24). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Feb) | 2.5ft (0.8m) | 13s |
| Afternoon (24 Feb) | 2.5ft (0.8m) | 12s |
| Evening (24 Feb) | 2ft (0.6m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 13 | 13 | 19 | 20 | 20 | 16 | 17 | 16 | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 206 | 167 | 167 | 175 | 133 | 95 | 95 | 190 | 192 | 232 | 284 | 251 | 251 | 455 | 396 | 341 | 253 | 260 | 229 | 303 | 198 | 303 | 360 | 542 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | off | off | off | off | cross- off | off | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:24AM 1.39 | 10:57PM 1.27 | 11:52AM 1.20 | 1:00AM 1.22 | 2:10PM 1.16 | 2:55AM 1.36 | ||||||||||||||||||
Low Tide / height (m) | 4:44PM 0.57 | 5:25AM 0.60 | 6:21PM 0.68 | 7:56AM 0.65 | 8:34PM 0.63 | |||||||||||||||||||
Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| Sunrise | 7:30 | - | - | - | - | - | - | - | 7:28 | - | - | - | - | - | - | - | 7:24 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - |
 | | |  | | | | | | | | |  | | | |  | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | 2 | 1 | 1 | - | - | - | - | - |
| Temp. °C | 10 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 10 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 9 | 10 | 11 | 9 | 8 | 7 | 7 | 7 |
| Feels °C (?) | 5 | 6 | 6 | 6 | 6 | 5 | 7 | 6 | 6 | 9 | 8 | 9 | 8 | 5 | 5 | 6 | 3 | 2 | 5 | 2 | 2 | 2 | 3 | 4 |
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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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