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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 03 Mar 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 7PM is: 1.5m 11s primary swell from a North-northwest direction and 0.5m 12s secondary swell from a West-northwest direction (forecast issued at 11:00am March 03). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Mar) | 6ft (1.9m) | 11s |
| Afternoon (03 Mar) | 5.5ft (1.7m) | 11s |
| Evening (03 Mar) | 4.5ft (1.3m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 03 | Wednesday 04 | Thursday 05 | Friday 06 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 14 | 13 | 13 | 12 | 12 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 911 | 845 | 673 | 571 | 412 | 275 | 212 | 151 | 83 | 186 | 299 | 202 | 187 | 147 | 502 | 674 | 1108 | 1355 | 614 | 570 | 767 | 618 | 755 | 694 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | off | off | off | off | off | cross- off | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross | cross- off |
High Tide / height (m) | 6:02AM 2.02 | 6:11PM 1.65 | 6:35AM 2.05 | 6:42PM 1.68 | 7:05AM 2.01 | 7:11PM 1.69 | ||||||||||||||||||
Low Tide / height (m) | 12:36PM 0.08 | 12:25AM -0.03 | 1:06PM 0.08 | 12:55AM -0.04 | 1:33PM 0.11 | 1:26AM 0.01 | ||||||||||||||||||
Tuesday 03 | Wednesday 04 | Thursday 05 | Friday 06 | |||||||||||||||||||||
| Sunrise | 7:13 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:08 | - | - | - | - |
 | | | |  |  |  | |  |  |  | | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | 1 | 3 | 6 | 4 | 1 | - | - | - | - | - |
| Temp. °C | 7 | 7 | 9 | 8 | 5 | 4 | 5 | 5 | 7 | 8 | 10 | 10 | 9 | 10 | 10 | 9 | 6 | 5 | 6 | 7 | 6 | 6 | 5 | 4 |
| Feels °C (?) | 4 | 4 | 5 | 4 | 0 | -1 | 0 | 0 | 3 | 4 | 6 | 6 | 3 | 5 | 6 | 5 | 1 | -2 | 0 | 1 | 0 | 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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