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Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 pm Monday 08 Dec 2025 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
10.7° C
(Which is normal for this time of year)Updates in hr min s Forecast update imminent
Mon 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | |||||||||||||||||||||
| 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 | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 11 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 14 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 986 | 838 | 683 | 525 | 441 | 382 | 306 | 279 | 1299 | 1606 | 1422 | 1044 | 768 | 814 | 927 | 1475 | 1191 | 1215 | 710 | 780 | 427 | 336 | 389 | 463 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off |
High Tide / height (m) | 8:18PM 1.42 | 8:54AM 1.79 | 9:05PM 1.28 | 9:51AM 1.68 | 9:57PM 1.15 | 10:56AM 1.56 | ||||||||||||||||||
Low Tide / height (m) | 2:32AM 0.22 | 3:45PM 0.38 | 3:21AM 0.30 | 4:47PM 0.50 | 4:16AM 0.39 | 5:52PM 0.57 | ||||||||||||||||||
Mon 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 8:38 | - | - | - | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:41 | - | - | - |
| Sunset | - | - | - | - | - | - | 3:57 | - | - | - | - | - | - | - | 3:57 | - | - | - | - | - | - | - | 3:56 | - |
 | |  | |  | | | |  | | | |  |  |  | | |  | | | | | | | |
Rain (mm) | - | - | 1 | 5 | 5 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 8 | 9 | 11 | 12 | 14 | 14 | 13 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 7 | 8 | 10 | 10 | 11 | 10 |
| Feels °C (?) | 3 | 5 | 6 | 3 | 8 | 7 | 1 | -1 | -1 | 0 | 0 | 1 | 1 | 1 | 2 | 3 | 3 | 1 | 0 | 0 | 1 | 2 | 4 | 4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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