Surf Forecasts:
How big are the waves at Ballyhiernan Bay today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 2.5ft (0.7m), 9s period with W swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 2.5ft (0.7m), 8s period with W swell.
- Evening surf: Evening surf (17 Aug, local time) - 4ft (1.2m), 7s period with W swell.
The current surf forecast for Ballyhiernan Bay at 2AM is: 0.8m 9s primary swell from a West direction and 0.4m 7s secondary swell from a Northwest direction (forecast issued at 06:00pm August 16). The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 2.5ft (0.7m) | 9s |
| Afternoon (17 Aug) | 2.5ft (0.7m) | 8s |
| Evening (17 Aug) | 4ft (1.2m) | 7s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Wed morning. Very mild (max 16°C on Mon morning, min 13°C on Sun afternoon). Winds increasing (light winds from the SSW on Sun night, fresh winds from the SW by Tue night). | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | |||||||||||||||||
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 |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NW 7 | W 7 | W 8 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 9 | WNW 12 | WNW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 43 | 38 | 84 | 119 | 99 | 95 | 69 | 65 | 63 | 61 | 147 | 134 | 167 | 178 | 221 | 287 | 432 | 1082 | 1155 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 9:30PM3.42m | 9:48AM2.98m | 10:07PM3.13m | 10:25AM2.80m | |||||||||||||||
Low Tide | 3:08PM0.09m | 3:40AM0.25m | 3:47PM0.32m | 4:16AM0.50m | 4:27PM0.60m | ||||||||||||||
 | |  |  | |  | | | | | | | | | | | |  |  | |
 | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 9:02 | — | — | — | — | — | — | — | 9:00 | — | — | — | — | — | — | — | 8:59 | — |
mm | 1 | 1 | 1 | — | — | — | 1 | 2 | 4 | 3 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 15 | 14 |
Feels °C | 10 | 11 | 13 | 15 | 15 | 14 | 14 | 16 | 13 | 13 | 11 | 11 | 10 | 10 | 10 | 11 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | NW 7 | W 7 | W 8 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | N 7 | N 7 | N 7 | N 7 | N 7 | N 6 | W 17 | — | WNW 11 |
| kJ | 43 | 38 | 84 | 119 | 99 | 95 | 69 | 65 | 63 | 61 | 4 | 4 | 4 | 3 | 1 | 1 | 6 | — | 1155 |
Swell 2 Height (m) Direction Period (s) | WSW 6 | NW 7 | NW 7 | NW 7 | NNW 8 | NNW 8 | NNW 7 | N 7 | N 7 | N 7 | W 18 | W 18 | W 19 | — | W 16 | W 16 | — | — | — |
| kJ | 12 | 26 | 17 | 17 | 21 | 19 | 11 | 9 | 9 | 8 | 6 | 6 | 7 | — | 5 | 5 | — | — | — |
Swell 3 Height (m) Direction Period (s) | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 | NW 6 | — | — | — | — | — | — | — | — | — |
| kJ | 15 | 23 | 22 | 22 | 12 | 12 | 7 | 6 | 4 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 9 | WNW 12 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 147 | 134 | 167 | 178 | 221 | 287 | 432 | 1082 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 329 | 334 | 370 | 370 | 146 | 411 | 1222 | 421 | 36 |
Best forecast wave conditions in Donegal | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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