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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 am Tuesday 07 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 12PM is: 1.3m 16s primary swell from a West-northwest direction (forecast issued at 06:00am April 07). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Apr) | 4.5ft (1.4m) | 17s |
| Afternoon (07 Apr) | 4.5ft (1.3m) | 16s |
| Evening (07 Apr) | 4ft (1.2m) | 15s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 07 | Wednesday 08 | Thursday 09 | Fri 10 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 19 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 13 | 16 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1441 | 1278 | 975 | 875 | 739 | 666 | 640 | 773 | 752 | 621 | 569 | 437 | 316 | 282 | 243 | 265 | 265 | 190 | 163 | 1077 | 3287 | 3968 | 3306 | 2680 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | cross- on | cross- on | glass | glass | cross- off | off | glass | off | off | off | cross | cross | cross | cross | cross | cross- off | cross- off |
High Tide / height (m) | 9:22AM 1.38 | 9:43PM 1.45 | 9:51AM 1.25 | 10:24PM 1.31 | 10:28AM 1.11 | 11:30PM 1.18 | ||||||||||||||||||
Low Tide / height (m) | 3:33AM 0.43 | 3:30PM 0.46 | 4:09AM 0.58 | 4:00PM 0.57 | 5:04AM 0.73 | 4:54PM 0.67 | ||||||||||||||||||
Tuesday 07 | Wednesday 08 | Thursday 09 | Fri 10 | |||||||||||||||||||||
| Sunrise | - | 6:43 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:15 | - | - | - | - | - | - | - | 8:16 | - | - | - | - | - | - | - | 8:17 | - | - |
 |  |  | | | |  | | | | | |  | | | |  |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | 1 | - | - | - | - |
| Temp. °C | 7 | 8 | 10 | 13 | 14 | 14 | 13 | 11 | 9 | 8 | 9 | 11 | 13 | 12 | 11 | 9 | 8 | 8 | 7 | 7 | 8 | 7 | 6 | 6 |
| Feels °C (?) | 2 | 3 | 4 | 8 | 9 | 11 | 11 | 10 | 6 | 7 | 8 | 9 | 11 | 11 | 7 | 4 | 4 | 1 | -1 | -2 | -2 | -2 | 0 | 1 |
- Map Icons:
Break
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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