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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Monday 30 Mar 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
8.2° C
(Which is normal for this time of year)How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 2AM is: 2.5m 16s primary swell from a Northwest direction (forecast issued at 06:00pm March 30). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Mar) | 7ft (2.1m) | 14s |
| Afternoon (31 Mar) | 6ft (1.8m) | 13s |
| Evening (31 Mar) | 5ft (1.6m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 16 | 16 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 8 | 8 | 14 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6963 | 6095 | 4586 | 3856 | 3130 | 2004 | 1688 | 1304 | 1053 | 838 | 838 | 784 | 760 | 570 | 505 | 353 | 251 | 544 | 541 | 439 | 243 | 875 | 714 | 505 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- on | cross- on | cross- on | cross- on | on | glass | cross- off | off |
High Tide / height (m) | 5:46PM 1.47 | 6:04AM 1.90 | 6:18PM 1.58 | 6:36AM 1.94 | 6:48PM 1.66 | 7:06AM 1.93 | ||||||||||||||||||
Low Tide / height (m) | 11:54PM 0.17 | 12:40PM 0.14 | 12:28AM 0.08 | 1:07PM 0.11 | 1:00AM 0.05 | |||||||||||||||||||
Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | 6:56 | - | - |
| Sunset | - | 7:59 | - | - | - | - | - | - | - | 8:00 | - | - | - | - | - | - | - | 8:02 | - | - | - | - | - | - |
 | |  | | | | |  | | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 3 | - | - | - | - | - | - |
| Temp. °C | 9 | 8 | 9 | 10 | 12 | 12 | 12 | 12 | 13 | 12 | 11 | 12 | 11 | 10 | 11 | 13 | 8 | 5 | 5 | 5 | 6 | 5 | 6 | 8 |
| Feels °C (?) | 2 | 3 | 5 | 5 | 8 | 9 | 9 | 8 | 9 | 8 | 7 | 8 | 7 | 6 | 7 | 7 | 2 | -4 | -4 | -2 | 1 | 2 | 3 | 4 |
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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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