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Surf Forecasts:

The Knap surf break

The Knap surfForecast / Wales – South East / UK

information circle12 Day Weather and Surf, issued 11 am Wednesday 04 Feb 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Today's The Knap sea temperature is
6.9° C
 (Which is 2.4°C colder than average for this time of year)

Best Forecast Surf Conditions for The Knap this week:

The surf forecast for The Knap over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Feb 10) at 9AM. The primary swell is predicted to be 0.6m and 17s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at The Knap in the next 12 days are 0.7m 18s and forecast to arrive on Tuesday (Feb 10) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Feb 05) at 12AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 10th Feb)2ft (0.6m) 17s
Best Surf 9AM (Tue 10th Feb)2ft (0.6m) 17s
Most Powerful 6AM (Tue 10th Feb)2.5ft (0.7m) 18s

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 Heavy rain (total 23mm), heaviest during Fri night. Very mild (max 10°C on Thu afternoon, min 6°C on Wed morning). Winds decreasing (strong winds from the E on Wed night, light winds from the ESE by Fri night).

Days 3-6 Weather Summary Moderate rain (total 15mm), heaviest on Mon afternoon. Very mild (max 10°C on Sun morning, min 7°C on Sun night). Winds increasing (light winds from the SSW on Sun morning, strong winds from the SE by Mon morning).

Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.5
W
0.4
WSW
0.3
WSW
0.2
W
0.4
WSW
0.5
W
0.4
WSW
0.4
WSW
0.4
WSW
0.4
WSW
0.4
WSW
0.3
WSW
0.3
WSW
0.3
WSW
0.3
WSW
0.3
WSW
0.2
WSW
0.3
WSW
0.6
WSW
0.6
WSW
0.5
W
Period(s) (?)141312121917161614141313121211111021171614
Wave
Graph
(?)Metric surfscale
Energy kJ (?)103572911124153868068616032292725221083232196103
Wind
(km/h)
20
E
30
E
40
E
30
E
20
SE
15
E
15
ENE
15
ENE
10
ESE
15
ESE
15
E
15
W
10
WSW
5
S
15
ESE
35
SE
35
SE
15
E
15
ENE
10
E
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
on		cross-
on		cross-
on		crosscrosscrosscross-
off		cross-
off		cross-
off		cross
High Tide
/ height (m)
8:38PM
11.56
8:55AM
11.90
9:14PM
11.32
9:31AM
11.50
9:50PM
10.88
10:06AM
10.90
10:25PM
10.28
10:42AM
10.16
11:02PM
9.58
11:20AM
9.35
11:43PM
8.85
12:06PM
8.54
12:39AM
8.17
Low Tide
/ height (m)
2:29PM
0.74
2:41AM
0.88
3:03PM
0.88
3:14AM
1.09
3:36PM
1.23
3:48AM
1.51
4:10PM
1.74
4:23AM
2.09
4:45PM
2.37
5:01AM
2.78
5:25PM
3.08
5:46AM
3.52
6:14PM
3.79
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Sunrise7:47--7:45--7:43--7:41--7:39--7:37--7:37--
Sunset-5:07--5:08--5:10--5:12--5:14--5:15--5:17-
part cloud
rain showers
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
cloud
light rain
part cloud
cloud
part cloud
rain showers
light rain
mod rain
light rain
light rain
light rain
mod rain
Rain (mm)
-11419214-2---1471116
Temp. °C898910988899910108888789
Feels °C (?)22-1366456556883134356
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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

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.

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