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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts
Beach/Jetty
Castlerock surf Forecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Thursday 18 Apr 2024 BST
Forecast update in hr min s 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 9.1°C (Statistics for 18 Apr 1981-2005 - mean: 8.9 °C max: 9.7 °C min: 7.8 °C)
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Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 9.1°C (Statistics for 18 Apr 1981-2005 - mean: 8.9 °C max: 9.7 °C min: 7.8 °C)
How big are the waves at Castlerock today?
The current surf forecast for Castlerock at 7PM is: 1.6m 8s primary swell from a Northwest direction and 0.7m 11s secondary swell from a Northwest direction (forecast issued at 06:00pm April 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | - | - |
| Afternoon (18 Apr) | 5ft (1.5m) | 8s |
| Evening (18 Apr) | 5.5ft (1.7m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Fri 26 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 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 | 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) (?) | 8 | 8 | 9 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 9 | 8 | 8 | 8 | 8 | 7 | 6 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 4 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 292 | 381 | 531 | 520 | 519 | 461 | 379 | 334 | 262 | 227 | 176 | 129 | 101 | 71 | 59 | 45 | 34 | 25 | 17 | 17 | 12 | 7 | 6 | 6 | 12 | 18 | 35 | 35 | 18 | 5 | 4 | 2 | 6 | 11 | 27 | 54 | 58 | 43 | 27 | 20 | 27 | 46 | 43 | 43 | 53 | 42 | 42 | 34 | 42 | 49 | 64 | 69 | 69 | 60 | 46 | 36 | 27 | 19 | 16 | 44 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | cross- on | cross | cross- off | cross- off | on | on | on | glass | off | off | off | glass | cross- on | on | on | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | on | on | on | on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:33PM 1.15 | 4:48AM 1.52 | 5:03PM 1.27 | 5:18AM 1.62 | 5:30PM 1.39 | 5:44AM 1.70 | 5:56PM 1.49 | 6:10AM 1.76 | 6:22PM 1.59 | 6:36AM 1.78 | 6:49PM 1.66 | 7:03AM 1.78 | 7:17PM 1.70 | 7:31AM 1.74 | 7:47PM 1.71 | |||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 10:20PM 0.51 | 11:22AM 0.45 | 11:01PM 0.40 | 11:49AM 0.35 | 11:34PM 0.30 | 12:13PM 0.27 | 12:05AM 0.23 | 12:38PM 0.21 | 12:35AM 0.18 | 1:02PM 0.17 | 1:05AM 0.17 | 1:26PM 0.17 | 1:34AM 0.18 | 1:49PM 0.19 | ||||||||||||||||||||||||||||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Fri 26 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - |
| Sunset | - | 8:37 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - | - | - | 8:50 | - | - | - | - | - | - | - | 8:52 | - | - |
 | |  | |  | |  | | | |  | | | | |  | | | | | | | | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |  | |
Rain (mm) | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 7 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 11 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 6 | 6 |
| Feels °C (?) | 2 | 3 | 2 | 2 | 2 | 1 | 2 | 4 | 3 | 2 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 6 | 6 | 5 | 4 | 5 | 5 | 4 | 2 | 1 | 1 | 0 | 0 | -1 | -1 | 1 | 1 | -1 | 0 | -1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
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