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Ballyhiernan Bay surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 6 pm Thursday 21 May 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
11.3° 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 10PM is: 0.9m 10s primary swell from a West direction and 0.3m 7s secondary swell from a Northwest direction (forecast issued at 06:00pm May 21). The wind direction is predicted to be offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| Afternoon (21 May) | 3ft (0.9m) | 10s |
| Evening (21 May) | 3ft (0.9m) | 10s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Thu afternoon. Very mild (max 18°C on Fri morning, min 11°C on Fri night). Winds decreasing (fresh winds from the SSE on Thu night, calm by Fri afternoon). | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 9 | W 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 11 | W 11 | W 12 | W 11 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 | |
137 | 156 | 156 | 162 | 177 | 195 | 191 | 192 | 199 | 166 | 189 | 218 | 74 | 71 | 53 | 42 | 168 | 160 | 162 | 207 | 220 | 216 | 210 | 166 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | off | off | off | off | off | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-on | |
High Tide | 10:49PM3.11m | 11:24AM2.55m | 11:57PM2.95m | 12:38PM2.39m | 1:11AM2.84m | |||||||||||||||||||
Low Tide | 4:16PM0.53m | 5:11AM0.59m | 5:19PM0.71m | 6:25AM0.74m | 6:31PM0.84m | 7:42AM0.79m | ||||||||||||||||||
 |  |  | | |  | | | | |  |  | | | | | | |  | | |  | |  | |
 | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — |
 | — | 9:43 | — | — | — | — | — | — | — | 9:44 | — | — | — | — | — | — | — | 9:45 | — | — | — | — | — | 9:46 |
1 | 7 | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 15 | 15 | 14 | 12 | 12 | 15 | 18 | 18 | 17 | 13 | 12 | 11 | 11 | 13 | 16 | 17 | 17 | 16 | 14 | 13 | 13 | 15 | 18 |
17 | 12 | 12 | 9 | 6 | 7 | 12 | 16 | 17 | 15 | 11 | 10 | 8 | 7 | 9 | 12 | 13 | 15 | 14 | 10 | 9 | 10 | 12 | 16 | |
Swell 1 Height (m) Direction Period (s) | W 9 | W 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 11 | W 11 | W 12 | W 11 | W 10 | W 10 | WSW 6 | WSW 6 | W 9 | W 16 | W 9 | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 |
 kJ | 137 | 156 | 156 | 162 | 177 | 195 | 191 | 192 | 199 | 166 | 189 | 218 | 74 | 39 | 30 | 42 | 5 | 160 | 162 | 207 | 220 | 216 | 210 | 166 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 6 | NNW 6 | NW 6 | NW 6 | NW 6 | — | — | — | W 10 | W 10 | WNW 12 | — | — | — | — | — | — | — | W 18 |
| kJ | 40 | 7 | 7 | 7 | 7 | 4 | 4 | 2 | 2 | 1 | — | — | — | 71 | 53 | 13 | — | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | NW 7 | NW 9 | NW 9 | N 8 | N 8 | N 8 | — | — | N 8 | — | — | — | — | — | N 6 | W 16 | — | — | — | — | — | — | — | — |
| kJ | 17 | 3 | 3 | 1 | 1 | 1 | — | — | 1 | — | — | — | — | — | 1 | 5 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | S 3 | SSE 2 | S 2 | — | — | — | — | — | WSW 6 | — | — | WSW 6 | W 9 | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | 1 | 1 | 1 | — | — | — | — | — | 51 | — | — | 41 | 168 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 21 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 91 | 0 | 112 | 28 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 28 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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