Surf Forecasts:
How big are the waves at Downhill today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 6.5ft (2.0m), 11s period with WNW swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 11ft (3.5m), 14s period with NW swell.
- Evening surf: Evening surf (17 Sep, local time) - 11ft (3.5m), 15s period with NW swell.
The current surf forecast for Downhill at 1AM is: 1.2m 9s primary swell from a West-northwest direction and 0.1m 8s secondary swell from a North direction (forecast issued at 06:00pm September 16). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 6.5ft (2.0m) | 11s |
| Afternoon (17 Sep) | 11ft (3.5m) | 14s |
| Evening (17 Sep) | 11ft (3.5m) | 15s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Fri night. Very mild (max 16°C on Fri afternoon, min 12°C on Wed night). Mainly strong winds. | |||||||||||||||||||
Wed 16 | Thursday 17 | Friday 18 | |||||||||||||||||
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 10 | NW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 10 | NW 11 | NW 13 | NW 14 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 208 | 139 | 103 | 232 | 320 | 500 | 1131 | 2445 | 4464 | 5588 | 5036 | 4250 | 3622 | 2824 | 2187 | 1677 | 1031 | 855 | 713 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross |
High Tide | 9:55PM1.72m | 10:11AM1.71m | 10:27PM1.52m | 10:53AM1.54m | |||||||||||||||
Low Tide | 3:56PM0.45m | 4:08AM0.58m | 4:37PM0.67m | 4:45AM0.75m | 5:37PM0.86m | ||||||||||||||
 | |  |  |  |  | |  |  | |  | | | | |  | | | | |
 | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — |
 | — | 7:43 | — | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:37 | — |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 3 |
Temp °C | 15 | 14 | 14 | 13 | 12 | 12 | 12 | 13 | 14 | 13 | 12 | 13 | 13 | 13 | 13 | 12 | 14 | 16 | 16 |
Feels °C | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 5 | 6 | 5 | 5 | 6 | 7 | 8 | 8 | 7 | 10 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | NW 10 | WNW 9 | N 8 | WNW 9 | WNW 10 | NW 11 | — | NW 14 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 |
| kJ | 208 | 139 | 103 | 1 | 320 | 500 | 1131 | — | 3949 | 5588 | 5036 | 4250 | 3622 | 2824 | 2187 | 1677 | 1031 | 855 | 713 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 2 | SW 3 | WNW 9 | — | SSW 3 | — | NW 13 | NW 13 | — | — | — | — | — | SW 3 | — | SSW 3 | SW 3 | — |
| kJ | — | 1 | 3 | 232 | — | 1 | — | 2445 | 4464 | — | — | — | — | — | 3 | — | 3 | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 327 | 286 | 336 | 343 | 342 | 971 | 772 | 772 | 772 | 772 | 385 | 752 | 385 | 24 | 4 | 28 | 13 | 13 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
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