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Ballyhiernan Bay surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 12 am Monday 18 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
11.1° 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 3AM is: 1.7m 12s primary swell from a West-northwest direction (forecast issued at 12:00am May 18). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 4.5ft (1.4m) | 11s |
| Afternoon (18 May) | 4ft (1.2m) | 10s |
| Evening (18 May) | 3.5ft (1.0m) | 10s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 13°C on Mon afternoon, min 8°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the SE by Mon night). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | W 9 | W 9 | W 9 | WNW 16 | WNW 16 | W 15 | W 14 | W 14 | W 13 | W 13 | W 12 | W 12 | |
819 | 698 | 540 | 469 | 404 | 304 | 245 | 186 | 151 | 107 | 69 | 47 | 24 | 57 | 78 | 288 | 554 | 1108 | 1443 | 1324 | 1104 | 956 | 759 | 555 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | cross-off | cross-off | cross-off | off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross-off | off | |
High Tide | 7:43AM3.42m | 8:06PM3.49m | 8:32AM3.27m | 8:55PM3.42m | 9:24AM3.04m | 9:49PM3.29m | ||||||||||||||||||
Low Tide | 1:26AM-0.02m | 1:46PM0.05m | 2:15AM0.03m | 2:33PM0.17m | 3:08AM0.18m | 3:22PM0.34m | ||||||||||||||||||
 | |  |  | | | |  | | |  | | | |  | | |  | | | |  | | | |
 | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:37 | — | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:40 | — |
— | — | — | — | — | — | — | 3 | 4 | 2 | 3 | — | 1 | 2 | 2 | 1 | — | — | — | 1 | 1 | — | — | — | |
Temp °C | 9 | 9 | 8 | 9 | 11 | 13 | 12 | 9 | 10 | 11 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 13 |
7 | 7 | 6 | 6 | 7 | 8 | 5 | 2 | 2 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 7 | 4 | 6 | 6 | 6 | 6 | 8 | 11 | |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | W 9 | W 9 | W 9 | W 9 | WNW 16 | W 15 | — | W 14 | — | W 13 | W 12 | W 12 |
 kJ | 819 | 698 | 540 | 469 | 404 | 304 | 245 | 186 | 151 | 107 | 69 | 47 | 24 | 57 | 78 | 106 | 554 | 1108 | — | 1324 | — | 956 | 759 | 555 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | N 9 | N 9 | N 9 | N 9 | ENE 6 | ENE 7 | NE 5 | NW 9 | WNW 13 | WNW 16 | WNW 16 | W 10 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | 2 | 2 | 1 | 4 | 5 | 1 | 22 | 17 | 51 | 288 | 148 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | N 6 | W 15 | NW 15 | NW 14 | WNW 13 | W 17 | WNW 13 | N 8 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 5 | 1 | 4 | 8 | 8 | 18 | 6 | 17 | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 2 | SE 3 | SSE 3 | SSE 3 | — | — | SSW 2 | — | — | — | — | W 14 | — | W 13 | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | 5 | 4 | 1 | — | — | 1 | — | — | — | — | 1443 | — | 1104 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 62 | 21 | 5 | 0 | 0 | 0 | 0 | 13 | 21 | 74 | 296 | 61 | 5 | 0 | 0 | 0 | 0 | 28 | 28 | 67 | 67 | 346 | 351 | 92 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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