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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 12 pm Wednesday 20 May 2026 BSTForecast update in hr min s Forecast update imminent
Today's The Knap sea temperature is
12.8° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at The Knap today?
The current surf forecast for The Knap at 3PM is: 0.7m 13s primary swell from a West direction (forecast issued at 12:00pm May 20). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 2.5ft (0.8m) | 14s |
| Afternoon (20 May) | 2.5ft (0.7m) | 13s |
| Evening (20 May) | 2ft (0.6m) | 13s |
Table - waves today at The Knap. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Fri morning, min 13°C on Wed morning). Winds decreasing (fresh winds from the WSW on Wed morning, light winds from the NW by Fri night). | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | |
229 | 171 | 166 | 121 | 84 | 75 | 46 | 46 | 44 | 23 | 22 | 21 | 20 | 20 | 19 | 19 | 22 | 23 | 22 | 23 | 22 | 20 | 22 | 21 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-on | on | cross-on | cross | cross | cross | cross | cross-off | |
High Tide | 10:00AM11.17m | 10:24PM11.25m | 10:51AM10.54m | 11:16PM10.62m | 11:46AM9.83m | 00:14AM9.95m | ||||||||||||||||||
Low Tide | 4:03PM1.43m | 4:33AM1.59m | 4:52PM2.04m | 5:27AM2.21m | 5:48PM2.69m | 6:29AM2.81m | ||||||||||||||||||
 | | |  |  |  | |  | | | | | | | | | | | | |  | | | | |
 | 5:15 | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — |
 | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:05 | — | — | — | — | — | — | — | 9:07 | — | — | — | 9:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 15 | 19 | 19 | 17 | 15 | 15 | 14 | 15 | 18 | 20 | 20 | 18 | 16 | 15 | 15 | 15 |
7 | 9 | 9 | 10 | 13 | 11 | 11 | 12 | 14 | 18 | 16 | 14 | 13 | 14 | 13 | 14 | 17 | 19 | 19 | 17 | 15 | 14 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | W 13 | W 13 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 |
 kJ | — | — | — | 121 | 84 | 75 | 46 | 46 | 44 | 23 | 22 | 21 | 20 | 20 | 19 | 19 | 22 | 23 | 22 | 23 | 22 | 20 | 22 | 21 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 13 | W 13 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 229 | 171 | 166 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 301 | 466 | 153 | 153 | 29 | 29 | 33 | 85 | 39 | 28 | 33 | 69 | 14 | 14 | 14 | 14 | 33 | 53 | 61 | 61 | 55 | 28 | 28 | 14 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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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