Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

The Knap surf break

The Knap surfForecast / Wales – South East / UK

information circle12 Day Weather and Surf, issued 5 pm Sunday 23 Nov 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Today's The Knap sea temperature is
11.5° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for The Knap this week:

The most powerful waves expected at The Knap in the next 12 days are 1.2m 10s and forecast to arrive on Monday (Nov 24) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Monday (Nov 24) at 6PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 6AM (Mon 24th Nov)4ft (1.2m) 10s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 8mm), mostly falling on Sun night. Very mild (max 10°C on Sun afternoon, min 5°C on Tue night). Winds decreasing (strong winds from the W on Sun night, calm by Tue night).

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Fri night. Very mild (max 13°C on Thu morning, min 6°C on Sat morning). Winds increasing (light winds from the W on Wed night, strong winds from the SSW by Fri night).

Sun
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
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 (?)
0.9
W
0.8
W
1
W
0.7
W
0.4
W
0.3
WNW
0.2
W
0.2
W
0.2
W
0.2
W
0.4
WSW
0.4
W
0.3
W
0.5
W
0.5
W
0.6
W
0.6
W
0.4
W
0.8
WNW
0.6
WNW
0.4
W
Period(s) (?)8810109610111110899898999712
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1049218888278799819241331394554271033743
Wind
(km/h)
40
W
40
W
25
NW
30
N
15
N
10
NNW
15
NNW
5
N
10
S
20
S
10
W
15
SSW
15
SW
30
W
30
WSW
35
WSW
35
SSW
15
W
25
WNW
20
WNW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscross-
on		oncross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		oncrosscrosscrosscross
High Tide
/ height (m)
8:27PM
10.28
8:45AM
10.41
9:04PM
9.92
9:23AM
10.04
9:45PM
9.48
10:06AM
9.61
10:32PM
9.04
10:57AM
9.20
11:29PM
8.67
11:59AM
8.91
12:38AM
8.51
1:11PM
8.88
1:53AM
8.69
Low Tide
/ height (m)
2:29AM
2.05
2:52PM
2.20
3:06AM
2.43
3:32PM
2.60
3:47AM
2.87
4:17PM
3.02
4:35AM
3.31
5:13PM
3.38
5:36AM
3.65
6:21PM
3.58
6:48AM
3.77
7:35PM
3.49
8:04AM
3.56
Sun
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunrise--7:43--7:46--7:47--7:48--7:50--7:52--7:52
Sunset4:15--4:14--4:13--4:12--4:10--4:09--4:08--
clear
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
cloud
light rain
light rain
cloud
light rain
part cloud
clear
part cloud
mod rain
rain showers
clear
part cloud
part cloud
Rain (mm)
-71------32-4---61---
Temp. °C10999788678121313131111119989
Feels °C (?)113224433310111183432236
  • 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

Latest Updates

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Ben Mondy

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for The Knap:

join our community of surf reporters

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

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest