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Surf Forecasts:
Ballyhiernan Bay surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 12 am Tuesday 21 Apr 2026 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
9.1° 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 7AM is: 0.8m 16s primary swell from a Northwest direction and 0.8m 12s secondary swell from a West-northwest direction (forecast issued at 12:00am April 21). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 3.5ft (1.0m) | 15s |
| Afternoon (21 Apr) | 3.5ft (1.1m) | 14s |
| Evening (21 Apr) | 3ft (0.9m) | 13s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 396 | 297 | 314 | 291 | 584 | 514 | 424 | 342 | 245 | 154 | 116 | 93 | 47 | 47 | 30 | 10 | 10 | 10 | 9 | 3 | 3 | 3 | 2 | 2 |
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 | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 9:01PM 3.35 | 9:27AM 3.13 | 9:51PM 3.16 | 10:22AM 2.80 | 10:50PM 2.93 | 11:30AM 2.49 | ||||||||||||||||||
Low Tide / height (m) | 3:10AM 0.17 | 3:29PM 0.37 | 4:04AM 0.43 | 4:22PM 0.64 | 5:11AM 0.71 | 5:28PM 0.89 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - | - | - | 8:50 |
 |  | |  | | | |  | |  | |  | | | | | | | | | | | | | |
Rain (mm) | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 9 | 6 | 6 | 7 | 8 | 11 | 11 | 10 | 7 | 6 | 5 | 7 | 10 | 12 | 11 | 10 | 9 | 7 | 6 | 8 | 12 | 13 | 12 |
| Feels °C (?) | 5 | 6 | 0 | 0 | 0 | 2 | 4 | 5 | 5 | 0 | -1 | -3 | -1 | 3 | 5 | 6 | 5 | 4 | 3 | 1 | 3 | 7 | 8 | 8 |
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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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