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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Friday 03 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 12AM is: 1.0m 12s primary swell from a Northwest direction and 1.2m 8s secondary swell from a Northwest direction (forecast issued at 06:00pm April 03). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Apr) | - | - |
| Afternoon (04 Apr) | 5.5ft (1.7m) | 13s |
| Evening (04 Apr) | 3.5ft (1.0m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | |||||||||||||||||||||
| 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 | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 12 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 8 | 13 | 13 | 13 | 13 | 13 | 11 | 11 | 11 | 11 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 932 | 336 | 321 | 292 | 1552 | 1254 | 1187 | 984 | 957 | 891 | 1504 | 984 | 562 | 562 | 495 | 1659 | 1609 | 1027 | 866 | 708 | 617 | 528 | 442 | 355 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- off | off | off | cross- off | cross- off | off | cross- off | cross- on | cross- on | cross | cross- off | cross | cross | cross | cross | cross- off | cross- off | off | off | cross- off | off |
High Tide / height (m) | 7:44PM 1.73 | 8:01AM 1.78 | 8:12PM 1.71 | 8:28AM 1.66 | 8:40PM 1.66 | 8:54AM 1.53 | ||||||||||||||||||
Low Tide / height (m) | 1:56PM 0.13 | 2:01AM 0.10 | 2:19PM 0.18 | 2:31AM 0.18 | 2:42PM 0.26 | 3:02AM 0.29 | ||||||||||||||||||
Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:47 | - | - |
| Sunset | - | 8:07 | - | - | - | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:10 | - | - | - | - | - | - |
 |  |  | |  |  |  | | | |  | |  | | | |  | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | - | 1 | 4 | - | 11 | 2 | - | - | - | 3 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 6 | 5 | 4 | 4 | 4 | 3 | 5 | 10 | 7 | 4 | 5 | 5 | 4 | 3 | 6 | 6 | 6 | 5 | 4 | 4 | 3 | 6 | 9 |
| Feels °C (?) | -3 | -3 | -3 | -2 | -1 | -1 | -2 | -4 | 1 | -4 | -9 | -6 | -3 | -2 | -4 | -4 | -3 | -2 | -1 | -1 | -2 | -4 | -1 | 1 |
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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
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