Surf Forecasts:
How big are the waves at Downhill today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.8m), 6s period with WNW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 3ft (0.9m), 8s period with WNW swell.
- Evening surf: Evening surf (18 Aug, local time) - 4ft (1.2m), 11s period with WNW swell.
The current surf forecast for Downhill at 5AM is: 0.8m 6s primary swell from a West-northwest direction and 0.1m 7s secondary swell from a North direction (forecast issued at 12:00am August 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2.5ft (0.8m) | 6s |
| Afternoon (18 Aug) | 3ft (0.9m) | 8s |
| Evening (18 Aug) | 4ft (1.2m) | 11s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Wed afternoon. Very mild (max 16°C on Mon night, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 8 | WNW 9 | WNW 10 | WNW 12 | WNW 11 | NW 11 | NW 11 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 10 | NNW 8 | NNW 7 | NNW 6 | NNW 7 | NNW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 39 | 37 | 40 | 42 | 95 | 121 | 208 | 365 | 329 | 268 | 258 | 229 | 204 | 171 | 125 | 125 | 100 | 86 | 65 | 119 | 118 | 75 | 183 | 181 |
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 | cross | cross | cross-off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:09PM2.01m | 10:18AM1.73m | 10:43PM1.78m | 10:56AM1.61m | 11:22PM1.56m | 11:47AM1.48m | ||||||||||||||||||
Low Tide | 4:28AM0.41m | 4:33PM0.40m | 5:04AM0.58m | 5:19PM0.62m | 5:48AM0.75m | 6:23PM0.82m | ||||||||||||||||||
 | |  | |  | | | |  | | |  | | |  |  | | | | |  | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:54 | — | — | — | — | — | — | — | 8:52 | — | — | — | — | — | — | — | 8:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 4 | 2 | — | — | — | — | 1 | — | — | — | — |
Temp °C | 16 | 15 | 15 | 15 | 16 | 16 | 15 | 14 | 13 | 12 | 13 | 12 | 15 | 15 | 15 | 13 | 13 | 13 | 12 | 12 | 14 | 14 | 13 | 12 |
Feels °C | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 8 | 10 | 8 | 13 | 14 | 14 | 11 | 11 | 10 | 10 | 11 | 11 | 9 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | N 7 | N 7 | — | — | — | — | WNW 10 | WNW 12 | WNW 11 | NW 11 | NW 11 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 10 | NNW 8 | WNW 10 | NW 9 | WNW 9 | WNW 9 |
| kJ | 1 | 1 | — | — | — | — | 208 | 365 | 329 | 268 | 258 | 229 | 204 | 171 | 125 | 125 | 100 | 86 | 65 | 119 | 37 | 22 | 8 | 16 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 8 | WNW 10 | ENE 4 | E 4 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 33 | 38 | 3 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 8 | ENE 4 | ENE 4 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 4 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 8 | WNW 9 | — | WSW 2 | SW 2 | SW 2 | SSW 2 | — | — | — | — | — | — | NNE 4 | NE 3 | — | NNW 7 | NNW 6 | NNW 7 | NNW 7 |
| kJ | 39 | 37 | 40 | 42 | 95 | 121 | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | 5 | 3 | — | 118 | 75 | 183 | 181 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 336 | 350 | 414 | 302 | 385 | 399 | 399 | 13 | 13 | 13 | 4 | 4 | 0 | 4 | 0 | 11 | 68 | 37 | 0 | 64 | 338 | 336 | 336 | 336 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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