Surf Forecasts:
Southerndown surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 10PM (local time) - 3ft (0.9m), 6s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 10PM (local time) - 3.5ft (1.0m), 8s period, WSW swell with 122 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 10PM (local time) - 3ft (0.9m), 6s period with W swell.
Best Forecast Surf Conditions for Southerndown this week:
The surf forecast for Southerndown over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 10PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.5m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Southerndown in the next 16 days are 1.0m 8s and forecast to arrive on Wednesday (Aug 26) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Aug 24) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 20th Aug) | 3ft (0.9m) 6s |
| Best Surf | 10PM (Thu 20th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 10PM (Wed 26th Aug) | 3.5ft (1.0m) 8s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Right, gather round. Rusty here, and I’ve got the lowdown on Southerndown. It's a lean stretch, no two ways about it. This beginner-friendly, fairly exposed break is looking at a real dry spell to kick things off. The water’s sitting at a very unusual 69° – that's a massive 8° warmer than it should be for this time of year, which is bloody odd for the Welsh coast.
We’re talking about a long, flat gap from now right through the end of August. There’s nothing on the table for the rest of this week or the next – just tiny dribbles and messy, choppy cross-onshore wind. For almost ten days, it’s a complete write-off. You’d get a better work-out paddling on a lake.
The first real glimmer of hope – and it’s a tentative one – shows up on the morning of Saturday, 29 August. We’ve got a solid pulse of moderate wave energy (528) rolling in, with a clean 6 ft swell from the WSW. The wind is set to be a light, clean easterly cross-offshore, which would finally put some shape into the place. That’s the standout window in the whole 16-day outlook. But the tide turns in the afternoon; the wind swings westerly and the energy jumps up to a strong 815 but with messy, cross-onshore wind spoiling the party. Saturday morning is the only clean shot.
After that, it fades back into the doldrums. Early September sees a few days of tiny, clean surf with offshore or glassy conditions, but the swell is barely a ripple – we’re talking 2 ft at best. There’s a bit more life on Wednesday, 2 September, with a moderate 4 ft swell and a clean offshore wind in the afternoon, but the period is a short, weak 6 seconds. It’s surfable, but it'll be ordinary.
So, to be straight with you: don’t get your hopes up for the next week and a half. If you are desperate, circle Saturday morning, 29 August – that’s your one and only proper standout. It’s a long way out, so treat it as a promising maybe, not a guarantee.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri morning. Very mild (max 19°C on Thu afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the W on Thu afternoon, calm by Fri morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Mon afternoon, min 15°C on Sun night). Winds increasing (calm on Sun afternoon, fresh winds from the E by Tue afternoon). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 8 | W 7 | W 9 | W 9 | W 8 | WSW 8 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | W 9 | WSW 10 | WSW 9 | WSW 9 | SW 13 | SW 13 | SSE 3 | WSW 5 | WSW 7 | WSW 8 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 169 | 166 | 101 | 38 | 33 | 10 | 18 | 17 | 8 | 8 | 8 | 9 | 8 | 8 | 7 | 7 | 2 | 2 | 10 | 120 | 89 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | glassy | cross | off | glassy | cross-on | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross |
High Tide | 12:04PM6.72m | 00:30AM6.40m | 1:00PM6.16m | 1:39AM5.89m | 2:24PM5.84m | 3:16AM5.76m | 4:00PM5.98m | 4:38AM6.08m | 5:06PM6.47m | 5:32AM6.62m | 5:53PM7.08m | 6:13AM7.20m | 6:31PM7.70m | ||||||||
Low Tide | 6:09PM2.56m | 6:37AM2.88m | 7:14PM3.08m | 7:53AM3.28m | 8:46PM3.31m | 9:31AM3.29m | 10:20PM3.09m | 10:50AM2.91m | 11:23PM2.60m | 11:43AM2.36m | 00:08AM2.02m | 12:22PM1.78m | 00:45AM1.45m | ||||||||
 |  |  |  | | | | |  | | | |  | | | | |  | |  |  | |
 | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — |
 | — | 8:27 | — | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — |
mm | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 5 |
Temp °C | 18 | 19 | 15 | 16 | 17 | 16 | 17 | 19 | 17 | 19 | 22 | 20 | 22 | 24 | 19 | 23 | 22 | 18 | 23 | 17 | 16 |
Feels °C | 13 | 14 | 13 | 15 | 15 | 14 | 14 | 15 | 14 | 17 | 20 | 19 | 16 | 18 | 12 | 17 | 16 | 16 | 19 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | W 9 | W 9 | W 8 | W 5 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | W 9 | WSW 10 | WSW 9 | WSW 9 | W 9 | W 8 | ESE 3 | WSW 5 | SW 5 | WSW 8 | WSW 8 |
| kJ | 8 | 8 | 101 | 38 | 33 | 5 | 18 | 17 | 8 | 8 | 6 | 9 | 8 | 8 | 2 | 1 | 1 | 2 | 10 | 120 | 89 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 14 | — | W 13 | WSW 8 | SW 15 | SW 15 | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | W 8 | W 8 | WSW 7 | W 8 | WSW 11 |
| kJ | — | — | 8 | — | 3 | 7 | 9 | 9 | — | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 1 | 1 | 10 | 22 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 16 | W 15 | W 15 | SW 15 | W 15 | — | — | — | — | SW 9 | — | S 8 | SW 8 | WSW 9 | W 11 | WSW 9 |
| kJ | — | — | — | — | — | 10 | 5 | 4 | 8 | 4 | — | — | — | — | 3 | — | 1 | 2 | 8 | 2 | 8 |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 7 | — | — | W 6 | — | — | — | — | — | — | — | E 2 | E 3 | E 3 | E 3 | SSE 3 | — | SSE 3 | — | — |
| kJ | 169 | 166 | — | — | 22 | — | — | — | — | — | — | — | 1 | 5 | 5 | 5 | 2 | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 423 | 306 | 0 | 30 | 130 | 43 | 56 | 133 | 50 | 103 | 174 | 43 | 425 | 292 | 375 | 174 | 169 | 92 | 51 | 54 | 3 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Southerndown 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 Southerndown Surf forecast
The above surf forecast table for Southerndown provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Southerndown can be found by selecting the local surf guide option on the grey menu. Our Southerndown 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 (Southerndown) 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 Southerndown 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.
Are you planning a holiday in Wales - South East? If you are looking for accommodation near Southerndown, camping, hotels and holiday cottages in Wales - South East, consider staying in Porthcawl which is 6 km (4 miles) away. Other places in and around Wales - South East where you can find information about places to rent, and car hire include Nash Point which is 8 km (5 miles) away, Coity, Maesteg and Barry.
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