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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 am Friday 27 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 3PM is: 1.6m 12s primary swell from a Northwest direction and 0.5m 16s secondary swell from a Northwest direction (forecast issued at 11:00am February 27). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Feb) | 5ft (1.5m) | 12s |
| Afternoon (27 Feb) | 5ft (1.6m) | 12s |
| Evening (27 Feb) | 7ft (2.2m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 27 | Saturday 28 | Sunday 01 | Monday 02 | |||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 667 | 700 | 723 | 786 | 1657 | 1494 | 1327 | 1225 | 1367 | 1200 | 905 | 757 | 591 | 546 | 465 | 355 | 303 | 246 | 237 | 167 | 299 | 320 | 314 | 255 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | on | on | on | cross- on | cross- off | cross- off | off | off | off | off | off | off | off | off | off | off | cross- off | off | off | off | off | cross- on |
High Tide / height (m) | 3:34PM 1.26 | 4:00AM 1.57 | 4:25PM 1.39 | 4:47AM 1.77 | 5:04PM 1.51 | 5:26AM 1.93 | ||||||||||||||||||
Low Tide / height (m) | 9:48AM 0.51 | 9:52PM 0.47 | 10:46AM 0.34 | 10:40PM 0.30 | 11:29AM 0.21 | 11:18PM 0.14 | ||||||||||||||||||
Friday 27 | Saturday 28 | Sunday 01 | Monday 02 | |||||||||||||||||||||
| Sunrise | 7:22 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:18 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:57 | - | - | - | - | - | - | - | 5:59 | - | - | - | - | - | - | - | - | 6:00 | - | - | - | - |
 | |  |  | | | |  |  | | |  | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | - | 1 | 1 | - | 2 | 1 | 1 | 1 | 2 | 3 |
| Temp. °C | 7 | 8 | 7 | 6 | 5 | 5 | 4 | 3 | 3 | 6 | 7 | 5 | 6 | 6 | 6 | 6 | 7 | 10 | 10 | 11 | 10 | 10 | 10 | 7 |
| Feels °C (?) | 3 | 2 | 1 | 0 | 0 | 1 | 0 | -2 | -2 | 0 | 0 | -1 | 2 | 2 | 1 | -1 | 1 | 6 | 8 | 5 | 1 | 1 | 1 | 0 |
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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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