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The Knap Surf Forecast
/ Wales – South East (14 surf breaks) /
Surf Forecasts:
The Knap surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 11 am Saturday 21 Mar 2026 GMTForecast update in hr min s Forecast update imminent
Today's The Knap sea temperature is
9.4° C
(Which is normal for this time of year)How big are the waves at The Knap today?
The current surf forecast for The Knap at 8PM is: 0.1m 11s primary swell from a West direction (forecast issued at 11:00am March 21). The wind direction is predicted to be glassy.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 0.5ft (0.1m) | 13s |
| Afternoon (21 Mar) | 0.5ft (0.1m) | 12s |
| Evening (21 Mar) | 0.5ft (0.1m) | 11s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | glass | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | glass | cross- on | cross- on | on | cross- on | on |
High Tide / height (m) | 8:10AM 12.36 | 8:29PM 12.12 | 8:48AM 12.16 | 9:07PM 11.83 | 9:27AM 11.63 | 9:48PM 11.23 | ||||||||||||||||||
Low Tide / height (m) | 2:18PM 0.31 | 2:33AM 0.42 | 2:52PM 0.55 | 3:09AM 0.78 | 3:29PM 1.08 | 3:48AM 1.43 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| Sunrise | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:27 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:30 | - | - | - | - |
 | |  | |  | | | | | |  | | |  | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 10 | 12 | 12 | 11 | 9 | 9 | 8 | 9 | 10 | 12 | 11 | 11 | 9 | 8 | 7 | 6 | 8 | 10 | 9 | 9 | 8 | 8 | 8 |
| Feels °C (?) | 6 | 8 | 10 | 11 | 10 | 8 | 8 | 6 | 8 | 7 | 9 | 7 | 9 | 6 | 5 | 3 | 2 | 5 | 8 | 7 | 6 | 4 | 3 | 3 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Knap surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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