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Surf Forecasts:
Ballyhiernan Bay surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 5 am Wednesday 17 Dec 2025 ISTForecast update in hr min s Forecast update imminent
Ballyhiernan Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ballyhiernan Bay sea temperature is
9.7° C
(Which is normal for this time of year)How big are the waves at Ballyhiernan Bay today?
The current surf forecast for Ballyhiernan Bay at 10AM is: 2.4m 13s primary swell from a West-northwest direction and 0.2m 12s secondary swell from a North direction (forecast issued at 05:00am December 17). The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 8ft (2.5m) | 13s |
| Afternoon (17 Dec) | 7ft (2.1m) | 12s |
| Evening (17 Dec) | 11ft (3.5m) | 15s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 12 | 12 | 13 | 15 | 21 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1585 | 1671 | 1935 | 1428 | 1356 | 2098 | 5855 | 22693 | 26118 | 25834 | 22131 | 20114 | 18684 | 16910 | 13028 | 11190 | 12169 | 12237 | 12127 | 12835 | 11846 | 8092 | 5375 | 3531 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | off | off |
High Tide / height (m) | 4:36PM 2.75 | 4:57AM 2.89 | 5:13PM 2.83 | 5:33AM 3.01 | 5:49PM 2.89 | |||||||||||||||||||
Low Tide / height (m) | 10:23AM 0.76 | 10:38PM 0.65 | 11:02AM 0.66 | 11:14PM 0.58 | 11:39AM 0.58 | 11:49PM 0.51 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - |
 |  |  | |  |  |  | |  | | | |  | | | | |  | |  | | | | | |
Rain (mm) | 3 | - | - | - | - | - | - | 1 | 1 | - | - | - | 5 | 1 | - | 1 | 1 | 2 | 1 | 1 | - | - | - | - |
| Temp. °C | 7 | 10 | 10 | 11 | 11 | 9 | 8 | 8 | 8 | 8 | 6 | 8 | 7 | 8 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 |
| Feels °C (?) | -4 | 0 | 4 | 4 | 4 | 2 | 2 | 0 | -2 | 0 | -1 | -3 | -2 | -1 | -2 | -4 | -4 | -4 | -4 | -3 | 0 | 2 | 2 | -1 |
- Map Icons:
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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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