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Surf Forecasts:
The Knap surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 11 pm Tuesday 09 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 6AM is: 0.5m 13s primary swell from a West direction and 0.6m 8s secondary swell from a West direction (forecast issued at 11:00pm December 09). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | 2.5ft (0.7m) | 13s |
| Afternoon (10 Dec) | 2.5ft (0.7m) | 12s |
| Evening (10 Dec) | 2ft (0.6m) | 12s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | ||||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 14 | 14 | 13 | 13 | 12 | 13 | 14 | 14 | 14 | 15 | 14 | 14 | 18 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 376 | 356 | 239 | 86 | 165 | 144 | 137 | 46 | 98 | 45 | 148 | 134 | 87 | 82 | 75 | 129 | 210 | 152 | 163 | 155 | 150 | 153 | 232 | 230 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- off |
High Tide / height (m) | 9:58PM 10.26 | 10:21AM 10.43 | 10:50PM 9.59 | 11:15AM 9.77 | 11:48PM 9.00 | 12:16PM 9.20 | ||||||||||||||||||
Low Tide / height (m) | 3:58AM 2.23 | 4:32PM 2.39 | 4:50AM 2.83 | 5:28PM 2.96 | 5:48AM 3.37 | |||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:06 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:07 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:04 | - |
 | |  | |  |  | | | | | | | | | | |  | | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | - | - |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 8 | 9 | 9 | 9 | 11 | 11 | 10 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 8 |
| Feels °C (?) | 4 | 5 | 5 | 6 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 5 | 6 | 6 | 5 | 6 | 6 | 7 | 8 | 6 | 5 | 4 | 4 |
- 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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