Surf Forecasts:
How big are the waves at Ballyhiernan Bay today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 5ft (1.5m), 12s period with WNW swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 5ft (1.5m), 11s period with WNW swell.
- Evening surf: Evening surf (21 Sep, local time) - 4.5ft (1.4m), 10s period with WNW swell.
The current surf forecast for Ballyhiernan Bay at 9PM is: 1.4m 10s primary swell from a West-northwest direction (forecast issued at 12:00pm September 21). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 5ft (1.5m) | 12s |
| Afternoon (21 Sep) | 5ft (1.5m) | 11s |
| Evening (21 Sep) | 4.5ft (1.4m) | 10s |
Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Tue afternoon. Warm (max 21°C on Mon afternoon, min 10°C on Wed night). Mainly fresh winds. | |||||||||||||||||||||
Mon 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||||||
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) | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | W 11 | W 11 | WNW 11 | WNW 15 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 583 | 495 | 476 | 370 | 356 | 407 | 416 | 541 | 606 | 525 | 415 | 1413 | 1748 | 1797 | 1629 | 1449 | 1226 | 1032 | 850 | 710 | 563 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | off | cross-off | off | off | cross-on | cross | cross | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | off |
High Tide | 3:56PM2.40m | 4:23AM2.29m | 4:43PM2.65m | 5:02AM2.52m | 5:17PM2.90m | ||||||||||||||||
Low Tide | 9:23AM1.26m | 10:17PM1.13m | 10:19AM1.01m | 10:57PM0.87m | 10:57AM0.76m | ||||||||||||||||
 | | | |  | |  |  |  | | | | | | | |  | | | | | |
 | 7:13 | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — |
 | — | — | — | 7:32 | — | — | — | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:28 | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 4 | — | — | — | — | 1 | — | — | — | — |
Temp °C | 18 | 20 | 21 | 20 | 19 | 18 | 16 | 16 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 12 |
Feels °C | 16 | 17 | 19 | 19 | 17 | 16 | 13 | 14 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 10 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | W 11 | W 11 | WNW 11 | WNW 15 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 11 |
| kJ | 583 | 495 | 476 | 370 | 356 | 407 | 416 | 541 | 606 | 525 | 415 | 1413 | 1748 | 1797 | 1629 | 1449 | 1226 | 1032 | 850 | 710 | 563 |
Swell 2 Height (m) Direction Period (s) | NNW 7 | NNW 8 | — | — | — | N 7 | N 7 | N 7 | N 7 | WNW 18 | WNW 15 | — | — | — | — | — | — | — | — | — | — |
| kJ | 31 | 23 | — | — | — | 1 | 1 | 1 | 1 | 34 | 275 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 20 | N 8 | N 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 8 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 28 | 28 | 28 | 0 | 0 | 21 | 0 | 0 | 28 | 26 | 28 | 83 | 90 | 28 | 128 | 28 | 210 | 406 | 116 | 0 | 0 |
Best forecast wave conditions in Donegal | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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