Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Ballyhiernan Bay surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 5 am Monday 05 Jan 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
8.4° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Ballyhiernan Bay today?
The current surf forecast for Ballyhiernan Bay at 8AM is: 2.0m 10s primary swell from a North-northwest direction and 0.2m 11s secondary swell from a West-northwest direction (forecast issued at 05:00am January 05). The wind direction is predicted to be onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Jan) | 6.5ft (2.0m) | 10s |
| Afternoon (05 Jan) | 6ft (1.9m) | 9s |
| Evening (05 Jan) | 5ft (1.5m) | 8s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 05 | Tuesday 06 | Wednesday 07 | Thu 08 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 10 | 9 | 11 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 917 | 838 | 748 | 664 | 566 | 414 | 291 | 232 | 108 | 124 | 97 | 225 | 349 | 735 | 845 | 614 | 413 | 307 | 228 | 230 | 185 | 319 | 736 | 1469 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | cross- on | cross- on | cross | cross | off | cross- off | cross- on | on | on | on | cross- on | on | cross- off | cross- off | off | cross- off | cross- on | cross- on |
High Tide / height (m) | 7:13AM 3.64 | 7:36PM 3.16 | 7:57AM 3.60 | 8:19PM 3.02 | 8:41AM 3.46 | 9:01PM 2.85 | ||||||||||||||||||
Low Tide / height (m) | 1:25PM 0.03 | 1:31AM 0.08 | 2:11PM 0.13 | 2:14AM 0.17 | 2:56PM 0.28 | |||||||||||||||||||
Monday 05 | Tuesday 06 | Wednesday 07 | Thu 08 | |||||||||||||||||||||
| Sunrise | - | - | 8:55 | - | - | - | - | - | - | - | 8:55 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:15 | - | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:19 | - | - | - |
 | |  | |  |  | | | | | |  |  | |  | | | | | | | | |  | |
Rain (mm) | 1 | 1 | 1 | 1 | - | - | - | 1 | - | 1 | 2 | - | - | 1 | - | 1 | - | - | - | - | - | 1 | - | - |
| Temp. °C | 5 | 5 | 5 | 5 | 5 | 6 | 5 | 8 | 8 | 6 | 5 | 5 | 9 | 8 | 7 | 6 | 6 | 6 | 6 | 5 | 3 | 4 | 8 | 8 |
| Feels °C (?) | -6 | -6 | -4 | -5 | -5 | -3 | -1 | 0 | 0 | -2 | -1 | 1 | 1 | -3 | -6 | -5 | -3 | 1 | 1 | -1 | -3 | -3 | -4 | -4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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