Surf Forecasts:
How big are the waves at Downhill today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 8ft (2.5m), 13s period with NW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.9m), 12s period with NW swell.
- Evening surf: Evening surf (18 Sep, local time) - 6ft (1.8m), 11s period with NW swell.
The current surf forecast for Downhill at 12AM is: 3.5m 14s primary swell from a Northwest direction (forecast issued at 06:00pm September 17). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 8ft (2.5m) | 13s |
| Afternoon (18 Sep) | 6ft (1.9m) | 12s |
| Evening (18 Sep) | 6ft (1.8m) | 11s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Fri morning. Very mild (max 16°C on Fri afternoon, min 11°C on Sat night). Mainly strong winds. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | |||||||||||||||||
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 13 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | WNW 11 | NW 11 | NW 11 | NW 12 | NW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 3905 | 5438 | 4823 | 3889 | 3253 | 2511 | 1952 | 1475 | 1031 | 1007 | 766 | 629 | 572 | 496 | 742 | 860 | 1064 | 1141 | 1468 |
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 | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:27PM1.52m | 10:53AM1.54m | 11:12PM1.33m | 12:17PM1.39m | |||||||||||||||
Low Tide | 4:37PM0.67m | 4:45AM0.75m | 5:37PM0.86m | 5:51AM0.90m | 7:38PM0.98m | ||||||||||||||
 |  |  | |  |  |  | | | |  | | | |  | | | | | |
 | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — |
 | — | 7:39 | — | — | — | — | — | — | — | 7:37 | — | — | — | — | — | — | — | 7:35 | — |
mm | — | — | — | — | — | — | 1 | 3 | 2 | — | 2 | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 12 | 13 | 13 | 13 | 12 | 13 | 16 | 16 | 16 | 15 | 14 | 13 | 13 | 14 | 14 | 13 | 12 |
Feels °C | 6 | 5 | 5 | 6 | 7 | 8 | 7 | 7 | 12 | 13 | 12 | 10 | 9 | 6 | 6 | 6 | 7 | 6 | 4 |
Swell 1 Height (m) Direction Period (s) | — | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | — | NW 11 | NW 11 | NW 12 | NW 12 |
| kJ | — | 5438 | 4823 | 3889 | 3253 | 2511 | 1952 | 1475 | 1031 | 1007 | 766 | 629 | 572 | 496 | — | 860 | 1064 | 1141 | 1468 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSE 4 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 13 | — | — | — | — | — | SW 3 | SSW 3 | WSW 3 | — | — | WSW 3 | SW 3 | W 4 | WNW 11 | W 4 | W 4 | W 4 | SW 3 |
| kJ | 3905 | — | — | — | — | — | 5 | 3 | 6 | — | — | 4 | 2 | 13 | 742 | 21 | 21 | 19 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 772 | 772 | 440 | 385 | 597 | 24 | 17 | 385 | 385 | 13 | 385 | 707 | 752 | 743 | 379 | 379 | 379 | 302 | 363 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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