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Surf Forecasts:

The Knap surf break

The Knap surfForecast / Wales – South East / UK

information circle48hr Weather and Surf, issued 11 am Wednesday 18 Mar 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Today's The Knap sea temperature is
8.8° 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 7PM is: 0.4m 15s primary swell from a West-southwest direction (forecast issued at 11:00am March 18). The wind direction is predicted to be cross-shore.

Time (GMT) & DateWave HeightWave Period
Morning (18 Mar)1.5ft (0.4m)12s
Afternoon (18 Mar)1.5ft (0.4m)12s
Evening (18 Mar)1.5ft (0.4m)15s

Table - waves today at The Knap. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Wednesday
18
Thursday
19
Friday
20
Saturday
21
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
WSW
0.3
WSW
0.4
WSW
0.4
WSW
0.4
WSW
0.3
WSW
0.3
WSW
0.3
W
0.3
W
0.2
W
0.2
W
0.2
W
0.2
W
0.2
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
Period(s) (?)121712151514141313131212121212121211111111111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)48565179714136313013121212123333222222
Wind
(km/h)
15
ENE
20
E
20
ESE
15
E
15
E
10
NE
15
ENE
15
ENE
15
ENE
20
ENE
15
ENE
15
ENE
10
ENE
10
ENE
10
ENE
10
NE
15
ENE
15
ENE
10
ENE
10
NE
10
NE
10
ENE
10
ENE
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off
High Tide
/ height (m)
6:24AM
11.04
6:43PM
11.15
6:59AM
11.75
7:18PM
11.75
7:34AM
12.21
7:53PM
12.09
Low Tide
/ height (m)
12:39PM
1.31
12:52AM
1.10
1:12PM
0.73
1:25AM
0.60
1:44PM
0.38
1:58AM
0.37
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunrise6:20-------6:18-------6:16-------
Sunset---6:21-------6:22-------6:24----
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
Rain (mm)
------------------------
Temp. °C914151311109871113131198779111211987
Feels °C (?)510109765327910865435798654
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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.

View detailed surf forecast for The Knap at:
surf-forecast.com

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