Surf Forecasts:
How big are the waves at The Knap today (12 Sep):
- Morning surf: Morning surf (12 Sep, local time) - 1ft (0.3m), 8s period with W swell.
- Afternoon surf: Afternoon surf (12 Sep, local time) - 1.5ft (0.4m), 7s period with W swell.
- Evening surf: Evening surf (12 Sep, local time) - 1.5ft (0.5m), 7s period with W swell.
The current surf forecast for The Knap at 3AM is: 0.3m 8s primary swell from a West direction (forecast issued at 06:00pm September 11). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Sep) | 1ft (0.3m) | 8s |
| Afternoon (12 Sep) | 1.5ft (0.4m) | 7s |
| Evening (12 Sep) | 1.5ft (0.5m) | 7s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 21°C on Mon morning, min 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | |||||||||||||||||
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) | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 8 | W 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 10 | W 10 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 19 | 23 | 25 | 26 | 26 | 25 | 16 | 9 | 30 | 17 | 17 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 7:55PM11.93m | 8:15AM11.74m | 8:33PM12.15m | 8:51AM11.86m | 9:08PM12.07m | ||||||||||||||
Low Tide | 1:47PM1.07m | 2:09AM0.73m | 2:21PM0.72m | 2:41AM0.56m | 2:54PM0.64m | ||||||||||||||
 | |  | | | |  | | | |  |  | |  | | | |  |  | |
 | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — |
 | — | 7:37 | — | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — | — | 7:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 2 | — | — | — | — | — |
Temp °C | 17 | 16 | 15 | 14 | 13 | 13 | 16 | 19 | 20 | 19 | 18 | 18 | 18 | 17 | 17 | 19 | 19 | 17 | 16 |
Feels °C | 14 | 13 | 13 | 13 | 10 | 9 | 12 | 15 | 16 | 15 | 15 | 15 | 16 | 15 | 16 | 18 | 17 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | — | — | — | — | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 10 | W 10 | W 10 |
| kJ | 14 | 14 | 14 | 13 | 12 | 12 | — | — | — | — | 25 | 26 | 26 | 25 | 16 | 9 | 30 | 17 | 17 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | W 10 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 7 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | W 8 | W 8 | W 6 | W 7 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 12 | 12 | 19 | 23 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 53 | 78 | 53 | 128 | 139 | 128 | 165 | 373 | 301 | 301 | 165 | 301 | 177 | 177 | 53 | 53 | 115 | 39 | 39 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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