The Knap surf break

The Knap surfForecast / Wales – South East / UK

information circle48hr Weather and Surf, issued 12 pm Monday 25 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Today's The Knap sea temperature is
13.8° C
(Which is 2.0°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 7PM is: 0.2m 9s primary swell from a West direction and 0.1m 13s secondary swell from a West direction (forecast issued at 12:00pm May 25). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (25 May)0.5ft (0.2m)9s
Afternoon (25 May)0.5ft (0.2m)9s
Evening (25 May)0.5ft (0.2m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Wed night. Warm (max 28°C on Tue afternoon, min 12°C on Wed night). Wind will be generally light.

Mon
25
Tuesday
26
Wednesday
27
Thu
28
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
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
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
10
0.2
W
12
0.1
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
11
0.2
W
11
0.2
W
11
0.2
W
11
0.1
W
11
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
Wave Graph
Metric surfscale
Energy kJ
6
6
6
6
6
6
7
11
3
11
11
11
10
10
9
9
9
2
2
2
2
2
2
2
Wind (km/h)
10
E
10
ESE
15
SE
10
SE
10
ESE
10
ENE
10
ENE
10
E
10
E
5
ESE
5
SSE
10
SSE
5
SE
5
ESE
15
ENE
25
ENE
25
ENE
25
ENE
20
E
15
SE
20
E
20
ENE
20
ENE
15
ENE
cross-off
cross
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
High Tide
3:13PM8.74m
3:43AM9.14m
4:19PM8.97m
4:44AM9.36m
5:13PM9.34m
5:34AM9.66m
Low Tide
8:55AM3.41m
9:22PM3.63m
10:04AM3.31m
10:27PM3.42m
11:00AM3.05m
11:20PM3.09m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
clear
clear
clear
part cloud
rain showers
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:07
5:07
5:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:10
9:12
9:13
9:15
1
1
Temp °C
22
25
27
26
24
23
21
20
22
25
28
26
25
23
19
16
16
20
25
24
20
15
13
12
21
26
27
26
24
24
21
20
23
27
30
28
27
23
19
14
13
17
23
23
18
11
9
9
Swell 1
Height (m)
Direction
Period (s)
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
10
0.2
W
12
0.1
W
9
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
11
0.2
W
11
0.2
W
11
0.2
W
11
0.1
W
11
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
0.1
W
10
Energy kJ
6
6
6
6
6
6
7
11
1
11
11
11
10
10
9
9
9
2
2
2
2
2
2
2
Swell 2
Height (m)
Direction
Period (s)
0.1
W
14
0.1
W
13
0.1
W
13
0.1
W
13
0.1
W
12
0.1
W
12
0.1
W
12
0.1
W
12
Energy kJ
4
3
3
3
3
3
3
3
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
Energy kJ
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
14
14
68
32
33
14
14
33
67
67
33
33
33
33
33
33
73
73
68
69
72
72
96
72
Best forecast wave conditions in Wales - South East
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
3
2
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
Header Global
Rating
(10 max)
5
4
4
4
4
4
5
5
9
9
9
5
6
7
7
7
8
9
9
7
6
9
7
9
  • 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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