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Trecco Bay Surf Forecast
/ Wales – South East (14 surf breaks) /
Surf Forecasts:
Trecco Bay surfForecast / Wales – South East / UK
12 Day Weather and Surf, issued 12 am Tuesday 16 Sep 2025 BST
Best Forecast Surf Conditions for Trecco Bay this week:
The most powerful waves expected at Trecco Bay in the next 12 days are 2.3m 12s and forecast to arrive on Tuesday (Sep 16) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Monday (Sep 22) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Tue 16th Sep) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Trecco Bay over the next 12 days.
Short Range Forecast Heavy rain (total 27mm), heaviest during Tue night. Warm (max 20°C on Thu morning, min 14°C on Mon night). Winds decreasing (near gales from the W on Mon night, light winds from the WSW by Thu afternoon). | Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Sun afternoon. Warm (max 20°C on Fri afternoon, min 11°C on Sun afternoon). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Sun morning). | |||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 11 | 8 | 9 | 12 | 12 | 11 | 9 | 10 | 10 | 9 | 10 | 9 | 9 | 8 | 8 | 8 | 6 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 2862 | 1515 | 636 | 549 | 666 | 974 | 1940 | 802 | 686 | 385 | 312 | 537 | 206 | 132 | 181 | 71 | 45 | 29 | 10 | 53 | 36 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- on | on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | off | off | off | cross- off | |
High Tide / height (m) | 1:38AM 6.39 | 2:24PM 6.42 | 3:18AM 6.31 | 3:58PM 6.66 | 4:38AM 6.73 | 5:05PM 7.24 | 5:34AM 7.31 | 5:54PM 7.84 | 6:17AM 7.86 | 6:34PM 8.35 | 6:54AM 8.30 | 7:09PM 8.70 | 7:27AM 8.59 | |||||||||
Low Tide / height (m) | 7:53AM 2.92 | 8:59PM 2.80 | 9:44AM 2.83 | 10:33PM 2.42 | 11:00AM 2.32 | 11:33PM 1.86 | 11:50AM 1.74 | 12:16AM 1.32 | 12:29PM 1.24 | 12:50AM 0.90 | 1:01PM 0.84 | 1:20AM 0.61 | 1:31PM 0.59 | |||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | ||||||||||||||||
| Sunrise | - | 6:50 | - | - | 6:50 | - | - | 6:52 | - | - | 6:54 | - | - | 6:56 | - | - | 6:58 | - | - | 6:58 | - | |
| Sunset | - | - | 7:28 | - | - | 7:24 | - | - | 7:22 | - | - | 7:21 | - | - | 7:19 | - | - | 7:15 | - | - | 7:14 | |
 |  |  |  |  |  |  | | |  |  | |  | |  |  | | | | | | ||
Rain (mm) | - | - | - | 12 | 6 | 4 | 5 | - | - | - | - | - | - | - | 2 | 3 | 3 | 3 | - | - | - | |
| Temp. °C | 15 | 15 | 15 | 16 | 17 | 17 | 18 | 20 | 19 | 17 | 18 | 20 | 16 | 16 | 15 | 14 | 15 | 15 | 11 | 13 | 14 | |
| Feels °C (?) | 5 | 9 | 10 | 9 | 12 | 14 | 14 | 16 | 16 | 16 | 17 | 20 | 13 | 10 | 9 | 8 | 14 | 9 | 4 | 7 | 9 | |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - South East
Still cross-shore at Trecco Bay (fresh winds from the W at St Athan 20 km from Trecco Bay). A 2.7m swell from the W
20 km away, 1 h 43 min ago
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 Trecco Bay 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 Trecco Bay Surf forecast
The above surf forecast table for Trecco Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Trecco Bay can be found by selecting the local surf guide option on the grey menu. Our Trecco Bay 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 (Trecco Bay) 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 Trecco Bay 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.
Trecco Bay is 2 km (1 miles) from Porthcawl. If you plan a holiday in Wales - South East, look for hotels and other accommodation in Porthcawl. Porthcawl has rooms for a wide range of budgets as well as car hire and transport links.
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