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Surf Forecasts:
The Knap surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 5 am Monday 08 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Today's The Knap sea temperature is
9.4° C
(Which is 2.2°C colder than average for this time of year)How big are the waves at The Knap today?
The current surf forecast for The Knap at 8AM is: 0.4m 12s primary swell from a West-southwest direction and 0.1m 23s secondary swell from a West direction, 0.4m 7s secondary swell from a West-southwest direction (forecast issued at 05:00am December 08). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 1.5ft (0.4m) | 12s |
| Afternoon (08 Dec) | 2ft (0.6m) | 12s |
| Evening (08 Dec) | 2.5ft (0.8m) | 17s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 11 | 12 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 28 | 27 | 44 | 43 | 119 | 329 | 404 | 304 | 283 | 201 | 193 | 444 | 334 | 222 | 215 | 92 | 181 | 85 | 54 | 50 | 28 | 28 | 27 | 47 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | on | on | on | on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 8:44AM 11.57 | 9:09PM 10.88 | 9:31AM 11.06 | 9:58PM 10.26 | 10:21AM 10.43 | 10:50PM 9.59 | ||||||||||||||||||
Low Tide / height (m) | 2:24AM 1.20 | 2:53PM 1.29 | 3:10AM 1.66 | 3:41PM 1.80 | 3:58AM 2.23 | 4:32PM 2.39 | ||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| Sunrise | - | - | 8:03 | - | - | - | - | - | - | - | 8:04 | - | - | - | - | - | - | - | 8:06 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:05 | - | - | - | - | - | - | - | 4:05 | - | - | - | - | - | - | - | 4:04 | - | - | - |
 |  |  | |  |  | | | | | |  | | | | | |  | |  | | | | | |
Rain (mm) | - | 1 | - | - | - | - | - | 3 | 3 | 3 | - | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 13 | 12 | 12 | 12 | 12 | 11 | 13 | 12 | 13 | 14 | 14 | 13 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 10 | 9 | 8 |
| Feels °C (?) | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 3 | 4 | 6 | 5 | 6 | 5 | 6 | 6 | 6 | 6 | 4 | 5 | 6 | 6 | 5 | 5 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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