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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 am Wednesday 04 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: 0.8m 12s primary swell from a West-northwest direction and 0.3m 12s secondary swell from a North-northwest direction (forecast issued at 11:00am March 04). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Mar) | 2ft (0.6m) | 10s |
| Afternoon (04 Mar) | 3ft (0.9m) | 13s |
| Evening (04 Mar) | 2.5ft (0.8m) | 12s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 04 | Thursday 05 | Friday 06 | Saturday 07 | |||||||||||||||||||||
| 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) (?) | 10 | 14 | 13 | 13 | 12 | 12 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 17 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 74 | 186 | 249 | 202 | 167 | 147 | 567 | 674 | 836 | 1463 | 623 | 570 | 503 | 495 | 609 | 600 | 529 | 466 | 519 | 669 | 834 | 1270 | 2442 | 1880 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | off | off | off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | off | off | off | off | off | off | off |
High Tide / height (m) | 6:35AM 2.05 | 6:42PM 1.68 | 7:05AM 2.01 | 7:11PM 1.69 | 7:34AM 1.91 | 7:40PM 1.66 | ||||||||||||||||||
Low Tide / height (m) | 1:06PM 0.08 | 12:55AM -0.04 | 1:33PM 0.11 | 1:26AM 0.01 | 1:58PM 0.18 | 1:56AM 0.10 | ||||||||||||||||||
Wednesday 04 | Thursday 05 | Friday 06 | Saturday 07 | |||||||||||||||||||||
| Sunrise | 7:11 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:08 | - | - | - | - | - | - | - | 6:10 | - | - | - | - |
 |  | | |  | | |  |  |  | | | |  | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 2 | 4 | 6 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 9 | 11 | 10 | 9 | 9 | 10 | 7 | 7 | 4 | 5 | 7 | 6 | 6 | 6 | 5 | 5 | 6 | 8 | 6 | 5 | 4 | 4 | 2 |
| Feels °C (?) | 3 | 5 | 8 | 6 | 3 | 3 | 5 | 3 | 2 | -6 | -3 | -1 | -1 | 0 | 1 | 0 | 1 | 2 | 4 | 0 | -1 | -2 | -3 | -5 |
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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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