Buy Less, Surf More This Black Friday
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Surf Forecasts:
The surf forecast for The Knap over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 3PM. The primary swell is predicted to be 0.6m and 17s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Knap in the next 12 days are 0.8m 17s and forecast to arrive on Monday (Dec 08) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 12th Dec) | 2ft (0.6m) 17s |
| Best Surf | 3PM (Fri 12th Dec) | 2ft (0.6m) 17s |
| Most Powerful | 9PM (Mon 8th Dec) | 2.5ft (0.8m) 17s |
Table - best surf conditions forecast for The Knap over the next 12 days.
Short Range Forecast Moderate rain (total 17mm), heaviest on Mon night. Very mild (max 14°C on Tue morning, min 9°C on Tue night). Winds increasing (light winds from the SSE on Mon night, strong winds from the SSW by Tue morning). | Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Fri afternoon. Very mild (max 11°C on Wed afternoon, min 8°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | WSW | WSW | W | W | W | W | W | W | ||
| Period(s) (?) | 13 | 12 | 11 | 19 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 13 | 12 | 13 | 13 | 17 | 16 | 16 | 14 | 9 | 12 | ||
Wave (?)Graph | |||||||||||||||||||||||
| 231 | 47 | 102 | 73 | 304 | 193 | 169 | 254 | 55 | 29 | 26 | 87 | 75 | 137 | 101 | 212 | 190 | 174 | 153 | 44 | 101 | |||
Wind (km/h) | WSW | SW | SW | SSW | S | S | SSW | SW | SW | W | SSW | SSE | S | S | S | SSW | SSW | SW | SW | SSW | SSE | ||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | on | on | cross- on | on | on | cross- on | on | cross- on | on | cross- on | cross- on | cross- on | cross- on | glass | on | on | cross- on | on | cross- on | ||
High Tide / height (m) | 8:22PM 11.36 | 8:44AM 11.57 | 9:09PM 10.88 | 9:31AM 11.06 | 9:58PM 10.26 | 10:21AM 10.43 | 10:50PM 9.59 | 11:15AM 9.77 | 11:48PM 9.00 | 12:16PM 9.20 | 12:54AM 8.59 | 1:24PM 8.84 | 2:03AM 8.46 | ||||||||||
Low Tide / height (m) | 2:24AM 1.20 | 2:53PM 1.29 | 3:10AM 1.66 | 3:41PM 1.80 | 3:58AM 2.23 | 4:32PM 2.39 | 4:50AM 2.83 | 5:28PM 2.96 | 5:48AM 3.37 | 6:31PM 3.41 | 6:54AM 3.74 | 7:38PM 3.64 | 8:04AM 3.87 | ||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||
| Sunrise | - | - | 8:03 | - | - | 8:04 | - | - | 8:06 | - | - | 8:07 | - | - | 8:07 | - | - | 8:08 | - | - | 8:10 | ||
| Sunset | 4:05 | - | - | 4:05 | - | - | 4:05 | - | - | 4:04 | - | - | 4:04 | - | - | 4:04 | - | - | 4:04 | - | - | ||
Rain (mm) | - | 1 | - | 1 | 12 | 1 | 2 | - | - | - | - | - | - | - | 4 | 10 | - | - | - | - | - | ||
| Temp. °C | 13 | 12 | 12 | 12 | 13 | 14 | 14 | 11 | 11 | 11 | 9 | 10 | 11 | 11 | 11 | 10 | 9 | 10 | 10 | 11 | 11 | ||
| Feels °C (?) | 4 | 5 | 8 | 8 | 7 | 5 | 6 | 5 | 6 | 6 | 5 | 5 | 6 | 6 | 5 | 9 | 3 | 4 | 4 | 4 | 3 | ||

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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.
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.

