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 9AM is: 0.7m 9s primary swell from a West direction and 0.4m 8s secondary swell from a North-northwest direction (forecast issued at 12:00am August 17). 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 22mm), heaviest during Mon afternoon. Very mild (max 16°C on Mon morning, min 14°C on Tue night). Winds increasing (light winds from the SSW on Sun night, fresh winds from the SW by Tue night). | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | W 7 | W 8 | WNW 9 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 94 | 99 | 95 | 69 | 65 | 63 | 63 | 147 | 134 | 139 | 173 | 239 | 310 | 552 | 1000 | 1121 | 1051 | 1322 | 1384 | 1230 | 1042 | 806 | 598 | 516 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | cross |
High Tide | 9:48AM2.98m | 10:07PM3.13m | 10:25AM2.80m | 10:45PM2.81m | 11:05AM2.59m | |||||||||||||||||||
Low Tide | 3:40AM0.25m | 3:47PM0.32m | 4:16AM0.50m | 4:27PM0.60m | 4:54AM0.78m | 5:12PM0.90m | ||||||||||||||||||
 | |  | |  | | |  | | | | | | | | | | | | |  | |  |  | |
 | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:00 | — | — | — | — | — | — | — | 8:59 | — | — | — | — | — | — | — | 8:55 | — |
mm | — | — | — | — | 1 | 2 | 5 | 1 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 4 | 2 | 2 | — | 1 |
Temp °C | 15 | 15 | 15 | 15 | 16 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 14 |
Feels °C | 15 | 15 | 14 | 14 | 16 | 13 | 13 | 12 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 7 | 8 | 9 | 10 | 11 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | N 7 | N 7 | N 7 | N 6 | N 6 | N 6 | — | — | — | — | W 18 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 |
| kJ | 94 | 99 | 95 | 69 | 65 | 63 | 63 | 4 | 4 | 4 | 3 | 1 | 1 | — | — | — | — | 6 | 1384 | 1230 | 1042 | 806 | 598 | 516 |
Swell 2 Height (m) Direction Period (s) | NW 7 | NNW 8 | NNW 8 | NNW 7 | N 7 | N 7 | N 7 | W 18 | W 18 | W 19 | — | — | W 16 | — | — | — | — | — | W 18 | — | — | — | — | — |
| kJ | 17 | 21 | 19 | 11 | 9 | 9 | 8 | 6 | 6 | 7 | — | — | 5 | — | — | — | — | — | 6 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NNW 8 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 | NNW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 22 | 12 | 12 | 7 | 6 | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 7 | W 7 | W 7 | W 7 | W 7 | W 8 | WNW 9 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 147 | 134 | 139 | 173 | 239 | 310 | 552 | 1000 | 1121 | 1051 | 1322 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 329 | 329 | 347 | 348 | 341 | 366 | 411 | 411 | 67 | 67 | 329 | 50 | 28 | 28 | 28 | 74 | 21 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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