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Surf Forecasts:
Ballycastle surfForecast / Antrim / Ireland
48hr Weather and Surf, issued 6 am Tuesday 21 Apr 2026 BSTForecast update in hr min s Forecast update imminent
Ballycastle surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ballycastle sea temperature is
8.9° C
(Which is normal for this time of year)How big are the waves at Ballycastle today?
The current surf forecast for Ballycastle at 11AM is: 0.7m 15s primary swell from a Northwest direction and 0.4m 11s secondary swell from a West-northwest direction (forecast issued at 06:00am April 21). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 2.5ft (0.7m) | 15s |
| Afternoon (21 Apr) | 3ft (0.9m) | 14s |
| Evening (21 Apr) | 2.5ft (0.7m) | 13s |
Table - waves today at Ballycastle. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | Fri 24 | |||||||||||||||||||||
| 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) (?) | 13 | 12 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 142 | 136 | 229 | 305 | 276 | 229 | 175 | 167 | 98 | 69 | 53 | 31 | 30 | 22 | 10 | 10 | 10 | 4 | 3 | 2 | 2 | 2 | 2 | 1 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- 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 | cross- off | cross- off | cross- off | off | off | off | off | off | off | off |
High Tide / height (m) | 6:06AM 0.43 | 6:55PM 0.56 | 6:10AM 0.43 | 7:36PM 0.54 | 6:12AM 0.44 | 8:30PM 0.50 | ||||||||||||||||||
Low Tide / height (m) | 1:31AM 0.16 | 1:15PM 0.13 | 2:08AM 0.26 | 1:17PM 0.11 | 2:40AM 0.37 | 12:55PM 0.08 | 11:52PM 0.44 | |||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Fri 24 | |||||||||||||||||||||
| Sunrise | - | 6:07 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - |
 |  | | |  | |  | | | | | | |  |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 6 | 6 | 9 | 11 | 11 | 9 | 7 | 6 | 6 | 7 | 9 | 11 | 11 | 10 | 7 | 6 | 5 | 6 | 8 | 10 | 11 | 12 | 12 |
| Feels °C (?) | 1 | -1 | -1 | 2 | 6 | 7 | 3 | 0 | -1 | -2 | -1 | 2 | 6 | 6 | 5 | 1 | 1 | 0 | 0 | 2 | 5 | 7 | 8 | 9 |
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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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