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The Knap surf break
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The Knap Surf Forecast / Wales – South East / UK

12 Day Weather and Surf, issued 6 pm Wednesday 10 Aug 2022 BST
Forecast update in  hr  min  s Update imminent
Today's The Knap sea temperature is 19.6 °C (Statistics for 10 Aug 1981-2005 - mean: 16.3 max: 17.7 min: 14.6 °C)
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Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
The knap.12
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Today's The Knap sea temperature is 19.6 °C (Statistics for 10 Aug 1981-2005 - mean: 16.3 max: 17.7 min: 14.6 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Wales - South East

  1. weather stationWind Update Continuing clean conditions at The Knap (light winds from the NE at Cardiff-Wales Airport 4 km from The Knap).

    The Knap
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1 h 43 min ago

Light
7 km/h
NE
Clean
Please reload the page to see if there are any updates.


Best Forecast Surf Conditions for The Knap this week:

The most powerful waves expected at The Knap in the next 12 days are 0.1m 10s and forecast to arrive on Friday (Aug 12) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 1s period and expected on Saturday (Aug 13) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4AM (Fri 12th Aug)0.5ft (0.1m) 10s

Table - best surf conditions forecast for The Knap over the next 12 days.

Updates in  hr  min  s Update imminent
Wed
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Mon
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
000000000000000000000000000000000000
Swell
Height Map
T unitedkingdom.htsgw.metric.9.cc23
T unitedkingdom.htsgw.metric.30.cc23
T unitedkingdom.htsgw.metric.54.cc23
T unitedkingdom.htsgw.metric.78.cc23
T unitedkingdom.htsgw.metric.102.cc23
T unitedkingdom.htsgw.metric.126.cc23
T unitedkingdom.htsgw.metric.150.cc23
T unitedkingdom.htsgw.metric.174.cc23
T unitedkingdom.htsgw.metric.198.cc23
T unitedkingdom.htsgw.metric.222.cc23
T unitedkingdom.htsgw.metric.246.cc23
T unitedkingdom.htsgw.metric.270.cc23
T unitedkingdom.htsgw.metric.291.cc23
Wave Height (m) & direction (?)
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
0.1
W
0.1
E
0.1
SE
0.1
S
0.1
W
0.1
W
0.2
W
0.2
W
0.1
W
0.1
W
0.1
W
0.1
W
0.2
WSW
0.4
W
0.3
W
0.3
W
0.4
W
0.4
W
0.4
W
0.5
W
0.5
W
0.4
WSW
0.4
W
0.3
W
0.7
WSW
Period(s) (?)868881099888223-765596633567667787775
Wave
Graph
(?)Metric surfscale
Energy (?)11111222111000011222110186810121527311715825
Wind
(km/h)
0
NNE
5
NE
15
ENE
5
NNE
10
E
20
ENE
10
NE
10
ESE
20
ENE
10
NE
10
E
20
ENE
15
SSE
5
WNW
10
W
20
S
10
SW
10
WSW
15
WSW
5
NNE
30
ENE
10
ESE
20
NE
15
NE
15
WSW
15
W
20
W
25
W
25
SW
25
W
40
WSW
25
WNW
30
WNW
35
W
25
WNW
35
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off
cross-
off
glasscross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
crosscross-
on
oncross-
on
cross-
on
cross-
on
glasscross-
off
crosscross-
off
offcross-
on
cross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
crosscrosscrosscrosscross
High Tide
/ height (m)
6:23PM
10.39
6:51AM
10.51
7:15PM
11.15
7:41AM
11.14
8:03PM
11.77
8:26AM
11.58
8:47PM
12.13
9:10AM
11.76
9:29PM
12.19
9:51AM
11.67
10:10PM
11.94
10:32AM
11.30
10:51PM
11.42
11:12AM
10.73
11:32PM
10.69
11:54AM
10.01
12:15AM
9.84
12:40PM
9.25
1:04AM
8.99
1:35PM
8.56
2:07AM
8.28
2:49PM
8.10
3:30AM
7.93
Low Tide
/ height (m)
12:41AM
2.10
1:04PM
1.86
1:33AM
1.41
1:52PM
1.27
2:19AM
0.90
2:35PM
0.88
3:01AM
0.62
3:16PM
0.73
3:41AM
0.63
3:55PM
0.83
4:19AM
0.89
4:33PM
1.19
4:57AM
1.38
5:12PM
1.74
5:36AM
2.02
5:52PM
2.43
6:17AM
2.74
6:38PM
3.16
7:06AM
3.46
7:34PM
3.84
8:08AM
4.04
8:49PM
4.29
9:30AM
4.31

Note: the tide data above is for Barry, Wales which is 2 km away. Surf properties and timing are calculated for The Knap.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at The Knap blow from the NNE

Wed
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Mon
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
clearclearclearclearclearclearclearclearclearpart cloudcloudpart cloudpart cloudpart cloudclearpart cloudpart cloudclearthunderstorm clearpart cloudrain showersheavy rainpart cloudrain showerspart cloudpart cloudclearrain showersrain showersrain showersrain showersclearrain showersrain showerslight rain
Summaryclearclearclearclearclearclearclearclearclearsome cloudscloudysome cloudssome cloudssome cloudsclearsome cloudssome cloudsclearrisk thund- derclearsome cloudsrain shwrsheavy rainsome cloudsrain shwrssome cloudssome cloudsclearrain shwrsrain shwrsrain shwrsrain shwrsclearrain shwrsrain shwrslight rain
Rain (mm)
------------------2--528-1---3142-214
Temp. °C292727322829332830342828322323251922231921221718191719191719191516171414
Low °C282022312124322124332225271820231820221618181616191718181617161215151313
Feels °C (?)27252529272630252631262528222322192121191921141918151415141313109999
Sunrise--5:52--5:52--5:54--5:56--5:58--5:58--6:01--6:03--6:03--6:05--6:07--6:09
Sunset8:45--8:43--8:40--8:38--8:37--8:35--8:34--8:31--8:29--8:27--8:24--8:22--

Short Range Forecast: Mostly dry. Warm (max 33°C on Fri afternoon, min 20°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 34°C on Sat afternoon, min 18°C on Sun night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 36mm), heaviest during Wed night. Warm (max 23°C on Tue afternoon, min 16°C on Tue night). Wind will be generally light.

Long Range Forecast: Heavy rain (total 20mm), heaviest during Sat afternoon. Very mild (max 19°C on Fri afternoon, min 12°C on Sat night). Winds increasing (moderate winds from the WSW on Fri night, strong winds from the WSW by Sat afternoon).

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.


Information about the The Knap Surf forecast

The above surf forecast table for The Knap provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at The Knap can be found by selecting the local surf guide option on the grey menu. Our The Knap surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (The Knap) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for The Knap may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

The Knap is 2 km (1 miles) from Barry. If you plan a holiday in Wales - South East, look for hotels and other accommodation in Barry. Barry has rooms for a wide range of budgets as well as car hire and transport links.