Surf Forecasts:
Southerndown surf forecast from 15 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 1AM (local time) - 3.5ft (1.0m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 4PM (local time) - 5.5ft (1.7m), 7s period, WSW swell with 294 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 1AM (local time) - 3.5ft (1.0m), 8s 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 Wednesday (Sep 16) at 1AM. The primary swell is predicted to be 1.0m and 8s period. 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 1.7m 7s and forecast to arrive on Saturday (Sep 19) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 16th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 1AM (Wed 16th Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 4PM (Sat 19th Sep) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright, Rusty here again, but in feet and miles. Let's look at Southerndown's outlook, and I'll be honest, it ain't pretty.
For the first week, from Tuesday the 15th through Monday the 21st, you can leave the board in the car. There's some size, but the wind is a killer. On the 15th, it's a messy 4ft cross-on swell with the combined energy a weak 161. The water is at 66°F, which is 6° warmer than average, so the sea is weirdly warm. But it doesn't matter because the waves are junk. That pattern sticks for days: Thursday the 17th morning has 5ft but with a short period of 7 seconds and a cross-on wind making it choppy and poor. The energy comes up to 245, but it's a total washout. The next few days are the same story.
We finally get a brief clean-up late on Tuesday the 22nd. There's a tiny 2ft swell from the W with a period of 11 seconds and a nice offshore ESE breeze. The conditions are clean. It's a very ordinary wave, but it's clean. The combined energy is only 69. That's basically a puddle. The morning of Wednesday the 23rd looks clean too, with a 2ft swell from the W and a period of 9 seconds, but the wind picks up a bit, and it's still tiny.
Honestly, the standout, if you can even call it that, is that Tuesday afternoon on the 22nd. It’s the only time where the wind and conditions line up for something remotely clean. But with a 2ft swell and 11 seconds of period, it’s not going to be a day to remember. For the rest of the period, we're looking at a 16-day gap with no real surf. It's just a normal bad run for this area.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 16°C on Tue afternoon, min 13°C on Tue night). Winds increasing (light winds from the NW on Tue night, fresh winds from the WSW by Wed night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 19°C on Mon morning, min 13°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri afternoon, calm by Sat night). | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 7 | W 8 | WSW 10 | W 10 | WSW 5 | W 7 | WSW 7 | W 7 | WSW 7 | WSW 5 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 9 | WSW 7 | WSW 7 | W 7 | W 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 161 | 124 | 230 | 212 | 81 | 245 | 214 | 161 | 143 | 111 | 254 | 247 | 294 | 136 | 47 | 108 | 40 | 26 | 22 | 8 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | on | cross-on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 9:49PM8.36m | 10:05AM8.05m | 10:23PM7.72m | 10:39AM7.43m | 10:59PM7.03m | 11:18AM6.78m | 11:43PM6.35m | 12:10PM6.16m | 00:48AM5.78m | 1:33PM5.74m | 2:32AM5.58m | 3:22PM5.85m | ||||||||
Low Tide | 3:47AM1.08m | 4:03PM1.29m | 4:19AM1.68m | 4:39PM1.92m | 4:56AM2.31m | 5:21PM2.57m | 5:44AM2.93m | 6:24PM3.16m | 7:03AM3.41m | 8:09PM3.44m | 8:58AM3.43m | 9:52PM3.17m | ||||||||
 |  |  | |  |  | | | |  | |  | | | | |  | | | | |
 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — |
 | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:17 | — | — | 7:15 | — |
mm | — | — | — | — | 1 | 1 | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 15 | 15 | 16 | 16 | 19 | 20 | 20 |
Feels °C | 10 | 12 | 11 | 11 | 10 | 12 | 9 | 10 | 10 | 9 | 12 | 13 | 13 | 13 | 12 | 13 | 16 | 20 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | — | W 8 | WSW 10 | — | W 10 | — | — | W 9 | — | — | W 12 | — | W 14 | WSW 7 | WSW 7 | W 9 | WSW 7 | WSW 7 | W 7 | WSW 6 |
| kJ | — | 124 | 230 | — | 52 | — | — | 64 | — | — | 3 | — | 4 | 136 | 47 | 108 | 40 | 26 | 22 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 9 | — | — | — | W 13 | W 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 40 | — | — | — | 3 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 7 | — | — | W 10 | WSW 5 | W 7 | WSW 7 | W 7 | WSW 7 | WSW 5 | WSW 7 | WSW 7 | WSW 7 | — | — | — | — | — | — | — |
| kJ | 161 | — | — | 212 | 81 | 245 | 214 | 161 | 143 | 111 | 254 | 247 | 294 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 416 | 0 | 30 | 138 | 337 | 353 | 353 | 39 | 359 | 306 | 306 | 308 | 165 | 30 | 30 | 135 | 130 | 50 | 195 | 62 |
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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