Surf Forecasts:
How big are the waves at Downhill today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 4.5ft (1.4m), 8s period with NNW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 5.5ft (1.7m), 7s period with NNW swell.
- Evening surf: Evening surf (20 Aug, local time) - 5ft (1.6m), 7s period with NNW swell.
The current surf forecast for Downhill at 7PM is: 1.6m 7s primary swell from a North-northwest direction and 0.3m 9s secondary swell from a West-northwest direction (forecast issued at 12:00pm August 20). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 4.5ft (1.4m) | 8s |
| Afternoon (20 Aug) | 5.5ft (1.7m) | 7s |
| Evening (20 Aug) | 5ft (1.6m) | 7s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 15°C on Sat afternoon, min 12°C on Thu night). Winds decreasing (fresh winds from the N on Thu afternoon, light winds from the SW by Sat night). | |||||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||||
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) | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NW 5 | NNW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 243 | 252 | 285 | 239 | 239 | 239 | 194 | 155 | 130 | 104 | 69 | 60 | 60 | 45 | 35 | 25 | 14 | 15 | 15 | 11 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on |
High Tide | 11:47AM1.48m | 00:21AM1.37m | 1:30PM1.38m | 2:44AM1.29m | 3:48PM1.45m | ||||||||||||||||
Low Tide | 6:23PM0.82m | 6:56AM0.87m | 8:10PM0.93m | 8:47AM0.90m | |||||||||||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:09 | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | — | — | — | 8:50 | — | — | — | — | — | — | — | 8:47 | — | — | — | — | — | — | — | 8:45 | — |
mm | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 14 |
Feels °C | 8 | 8 | 6 | 6 | 6 | 7 | 6 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 10 | 10 | 11 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | NW 8 | WNW 8 | WNW 8 | W 8 | W 8 | W 7 | W 7 | NNW 5 | W 8 | W 7 | W 7 | W 10 | NNW 5 |
| kJ | 38 | 18 | 18 | 17 | 8 | 15 | 7 | 7 | 3 | 6 | 6 | 1 | 1 | 1 | 1 | 25 | 1 | 1 | 1 | 2 | 10 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | W 7 | W 7 | W 10 | — | W 10 |
| kJ | 56 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 2 | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | — | NNW 5 | NNW 5 | NNW 5 | NW 5 | — |
| kJ | 243 | 252 | 285 | 239 | 239 | 239 | 194 | 155 | 130 | 104 | 69 | 60 | 60 | 45 | 35 | — | 14 | 15 | 15 | 11 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 345 | 781 | 1085 | 338 | 307 | 74 | 410 | 74 | 410 | 345 | 269 | 269 | 269 | 269 | 249 | 39 | 251 | 285 | 285 | 39 | 276 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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