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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 pm Wednesday 12 Nov 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
12.5° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 1AM is: 1.9m 9s primary swell from a North-northwest direction (forecast issued at 11:00pm November 12). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Nov) | 4.5ft (1.4m) | 9s |
| Afternoon (13 Nov) | 4.5ft (1.3m) | 8s |
| Evening (13 Nov) | 3.5ft (1.0m) | 7s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 15 | 6 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 554 | 613 | 463 | 363 | 311 | 238 | 202 | 134 | 100 | 113 | 117 | 77 | 58 | 102 | 148 | 29 | 32 | 15 | 15 | 10 | 9 | 8 | 105 | 51 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross |
High Tide / height (m) | 12:29AM 1.01 | 1:23PM 1.48 | 2:03AM 1.08 | 2:29PM 1.54 | 2:58AM 1.20 | 3:15PM 1.59 | ||||||||||||||||||
Low Tide / height (m) | 6:55PM 0.59 | 6:20AM 0.56 | 8:17PM 0.55 | 7:41AM 0.52 | 9:12PM 0.47 | 8:46AM 0.46 | ||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 7:54 | - | - | - | - | - | - | - | 7:56 | - | - | - | - | - | - | - | 7:58 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - | - | 4:24 | - | - | - | - | - | - | - | 4:22 | - |
 |  | |  |  | | | | |  | | |  | | | | | |  | | | | | | |
Rain (mm) | - | 1 | 4 | 9 | 5 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 10 | 9 | 7 | 6 | 5 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 7 | 7 | 7 |
| Feels °C (?) | 6 | 3 | 1 | -2 | -6 | -5 | -3 | -4 | -2 | -2 | -3 | -3 | -3 | -3 | -3 | -4 | -4 | -4 | -3 | -4 | -3 | -1 | 1 | 2 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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