Surf Forecasts:
How big are the waves at The Knap today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 1.5ft (0.5m), 7s period with W swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 1.5ft (0.5m), 6s period with W swell.
- Evening surf: Evening surf (18 Sep, local time) - 2ft (0.6m), 7s period with W swell.
The current surf forecast for The Knap at 3AM is: 0.5m 7s primary swell from a West direction (forecast issued at 12:00am September 18). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 1.5ft (0.5m) | 7s |
| Afternoon (18 Sep) | 1.5ft (0.5m) | 6s |
| Evening (18 Sep) | 2ft (0.6m) | 7s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Sat morning, min 13°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the WNW by Sun morning). | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 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) | W 7 | W 7 | W 7 | W 7 | W 7 | W 5 | W 6 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | W 7 | W 9 | W 9 | W 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 24 | 25 | 25 | 23 | 23 | 18 | 25 | 35 | 57 | 57 | 55 | 55 | 58 | 60 | 41 | 28 | 17 | 17 | 9 | 15 | 8 | 15 | 15 | 6 |
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-on | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross |
High Tide | 11:23PM9.47m | 11:44AM9.13m | 00:05AM8.57m | 12:32PM8.32m | 1:06AM7.78m | 1:53PM7.71m | ||||||||||||||||||
Low Tide | 5:24AM2.92m | 5:48PM3.36m | 6:09AM3.74m | 6:44PM4.14m | 7:16AM4.46m | 8:14PM4.65m | ||||||||||||||||||
 |  |  | | | | |  | | | | |  | | | | | | | |  | | | | |
 | — | 6:50 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:19 | — | — | — | — | — | — | — | 7:16 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 15 | 17 | 16 | 16 | 17 | 17 | 17 | 16 | 17 | 18 | 18 | 16 | 15 | 16 | 15 | 14 | 14 | 16 | 17 | 16 | 15 |
Feels °C | 10 | 9 | 10 | 11 | 12 | 10 | 10 | 12 | 12 | 13 | 11 | 12 | 14 | 14 | 12 | 11 | 12 | 11 | 11 | 12 | 14 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 7 | W 7 | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | — | W 10 | W 7 | W 7 | W 7 | W 9 | W 9 | W 9 |
| kJ | 7 | 25 | 25 | — | — | — | — | — | — | — | — | — | — | — | 41 | 28 | — | 7 | 9 | 15 | 8 | 15 | 15 | 6 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 7 | — | — | W 7 | W 7 | W 5 | W 6 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | — | — | W 7 | W 7 | — | — | — | — | — | — |
| kJ | 24 | — | — | 23 | 23 | 18 | 25 | 35 | 57 | 57 | 55 | 55 | 58 | 60 | — | — | 17 | 17 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 61 | 301 | 286 | 301 | 358 | 358 | 358 | 301 | 301 | 286 | 286 | 301 | 358 | 180 | 201 | 78 | 132 | 115 | 28 | 28 | 53 | 73 | 71 | 75 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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