The Knap Surf Break

The Knap 48 hour detailed Surf Forecast

Lat Long: 51.39° N 3.30° W

Issued: 12 pm 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's The Knap sea temperature is
15.9° C

2.4°C warmer than normal for this time of year


How big are the waves at The Knap today (18 Jun):

  • Morning surf: Morning surf (18 Jun, local time) - 1ft (0.3m), 10s period with W swell.
  • Afternoon surf: Afternoon surf (18 Jun, local time) - 1ft (0.3m), 10s period with W swell.
  • Evening surf: Evening surf (18 Jun, local time) - 1ft (0.3m), 9s period with WSW swell.

The current surf forecast for The Knap at 4PM is: 0.3m 10s primary swell from a West-southwest direction (forecast issued at 12:00pm June 18). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (18 Jun)1ft (0.3m)10s
Afternoon (18 Jun)1ft (0.3m)10s
Evening (18 Jun)1ft (0.3m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 23°C on Fri morning, min 14°C on Sat night). Wind will be generally light.

Thu
18
Friday
19
Saturday
20
Sun
21
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 Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
W
10
0.3
W
10
0.3
WSW
10
0.3
WSW
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
8
0.3
W
8
0.4
WSW
8
0.4
WSW
8
0.4
WSW
8
0.4
WSW
8
0.3
WSW
8
0.3
WSW
8
0.3
W
8
0.3
W
8
0.2
W
8
0.2
W
8
0.1
W
8
0.1
W
8
0.2
W
7
0.1
W
7
Wave Graph
Metric surfscale
Energy kJ
17
16
18
17
15
14
14
14
12
12
22
22
22
22
13
12
11
11
5
5
1
1
4
1
Wind (km/h)
15
SSW
15
S
15
SW
10
WSW
10
S
10
S
10
SSE
10
S
15
SSW
15
SW
20
WNW
15
W
10
W
15
WSW
15
W
15
W
15
W
15
W
15
W
15
W
10
W
5
N
15
NE
15
NE
Wind State
on
on
on
cross-on
on
cross-on
cross-on
cross-on
on
on
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross
cross
off
cross-off
cross-off
High Tide
9:51AM11.17m
10:14PM11.47m
10:41AM10.78m
11:03PM11.04m
11:31AM10.27m
11:55PM10.48m
Low Tide
3:56PM1.37m
4:27AM1.37m
4:44PM1.73m
5:16AM1.80m
5:34PM2.21m
6:08AM2.30m
cloud
cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:31
9:31
9:32
9:32
 mm
Temp °C
18
20
21
20
18
16
15
15
19
23
20
18
17
17
15
15
15
16
17
17
16
16
15
14
Feels °C
17
19
20
20
18
16
15
14
18
22
18
17
17
17
13
13
12
13
14
14
14
16
12
11
Swell 1
Height (m)
Direction
Period (s)
0.3
W
10
0.3
W
10
0.3
WSW
10
0.3
WSW
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
8
0.3
W
8
0.4
WSW
8
0.4
WSW
8
0.4
WSW
8
0.3
WSW
8
0.3
WSW
8
0.3
W
8
0.3
W
8
0.2
W
8
0.2
W
8
0.1
W
8
0.2
W
7
0.1
W
7
Energy kJ
17
16
18
17
15
14
14
14
12
12
22
22
22
13
12
11
11
5
5
1
4
1
Swell 2
Height (m)
Direction
Period (s)
0.1
W
8
Energy kJ
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.4
WSW
8
Energy kJ
22
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)
39
73
134
69
22
33
25
32
33
256
153
73
153
136
78
53
71
136
177
71
53
33
65
65
Best forecast wave conditions in Wales - South East
Rating
(10 max)
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
2
2
2
2
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1
2
Header Global
Rating
(10 max)
9
9
5
5
5
5
5
6
6
7
5
4
7
6
5
5
4
5
5
5
5
9
9
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
How to use the Wavefinder

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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