Surf Forecasts:
Southerndown surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 10AM (local time) - 3ft (0.9m), 7s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 10AM (local time) - 4.5ft (1.4m), 10s period, W swell with 363 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 10AM (local time) - 3ft (0.9m), 7s period with WSW 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 Sunday (Sep 20) at 10AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m 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 1.4m 10s and forecast to arrive on Wednesday (Sep 16) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 20th Sep) | 3ft (0.9m) 7s |
| Best Surf | 10AM (Sun 20th Sep) | 3ft (0.9m) 7s |
| Most Powerful | 10AM (Wed 16th Sep) | 4.5ft (1.4m) 10s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s size up what’s heading for Southerndown over the next couple of weeks. To be honest, it’s a pretty grim run for the most part. We’re sitting in water that’s 66°F, which is a full 6°F warmer than normal for this time of year – that’s a seriously unusual warm patch.
The whole thing starts on Sunday the 13th, but don’t rush out. There’s a 4ft swell from the west, but the wind is onshore and the combined energy is 484 (moderate). Conditions are poor, and that’s the story for the next week. We get hammered by moderate to fresh cross-onshore and cross-shore winds day after day. Swell heights bounce between 3ft and 5ft, mostly from the west or west-southwest, but the period is often a weak 7 seconds. Wednesday the 16th morning has a bit more punch with a combined energy of 614 (moderate), but the 5ft W swell is chopped up by cross-shore wind. By Saturday the 19th, the swell hits 5ft, but with strong onshore winds, it’s just lumpy and poor. This whole first week is a write-off for proper surfing. Honestly, with this wind, the setup might be better for kites than paddles.
Then we get a break. Sunday the 20th morning, the wind swings to a light easterly cross-offshore at just 6 mph, cleaning the place right up. The swell is only 3ft from the WSW, with a combined energy of 111 (weak), but those “clean” conditions make it surfable. It’s nothing special, but after that mess, a clean 3ft wave is a winner. That’s the standout moment. Crowds are sometimes a thing here, so you might have a few mates out for those small, clean lines.
Monday the 21st drops to 1ft and the wind goes back onshore. We get a few more clean mornings on Tuesday the 22nd and Wednesday the 23rd, but the swell is small and short-period. From the 25th onwards, it’s tiny: 0.3ft to 0.9ft for the rest of the run, with a very long period of 17 seconds on the 25th morning – a proper groundswell, but with zero height, it’s just a flat, clean ocean.
So the bottom line: the first week is a total loss. Your only real window is Sunday the 20th through Wednesday the 23rd, with Sunday the 20th morning being the pick of the bunch for clean conditions. After that, it’s a long flat spell. Forecasts can change, but right now, pick your day wisely.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 19°C on Mon afternoon, min 12°C on Tue night). Winds increasing (light winds from the SW on Sun night, fresh winds from the W by Tue morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Very mild (max 17°C on Fri night, min 13°C on Thu night). Mainly fresh winds. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | W 10 | W 10 | WSW 9 | WSW 9 | WSW 6 | W 7 | W 7 | W 7 | W 10 | W 10 | W 10 | W 7 | W 7 | W 8 | W 7 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 225 | 153 | 113 | 137 | 77 | 161 | 152 | 159 | 363 | 202 | 170 | 212 | 203 | 259 | 209 | 161 | 94 | 181 | 227 | 167 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 8:41PM9.27m | 8:59AM8.95m | 9:16PM8.90m | 9:32AM8.57m | 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 | |||||||
Low Tide | 2:45AM0.22m | 2:58PM0.36m | 3:16AM0.58m | 3:30PM0.76m | 3:47AM1.08m | 4:03PM1.29m | 4:19AM1.68m | 4:39PM1.92m | 4:56AM2.31m | 5:21PM2.57m | 5:44AM2.93m | 6:24PM3.16m | ||||||||
 |  | |  |  | | |  |  | | | |  | | | |  | | | | |
 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — |
 | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — |
mm | 1 | — | 1 | — | 2 | — | — | — | — | — | 2 | 1 | — | — | — | — | 5 | 1 | 1 | 2 |
Temp °C | 18 | 18 | 18 | 19 | 19 | 16 | 16 | 15 | 15 | 15 | 16 | 16 | 15 | 14 | 16 | 16 | 17 | 17 | 17 | 17 |
Feels °C | 16 | 17 | 17 | 16 | 17 | 11 | 10 | 12 | 10 | 9 | 10 | 10 | 9 | 9 | 10 | 11 | 14 | 13 | 12 | 15 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | — | W 6 | W 11 | — | W 7 | W 9 | W 10 | W 10 | W 10 | — | — | — | — | W 12 | — | — | — |
| kJ | 225 | 148 | 101 | — | 44 | 2 | — | 159 | 251 | 106 | 162 | 2 | — | — | — | — | 3 | — | — | — |
Swell 2 Height (m) Direction Period (s) | W 10 | — | — | — | WSW 8 | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — |
| kJ | 49 | — | — | — | 22 | — | — | — | — | — | — | — | — | — | — | — | 11 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 6 | W 7 | W 7 | — | W 10 | W 10 | WSW 10 | W 7 | W 7 | W 8 | W 7 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 210 | 153 | 113 | 137 | 77 | 161 | 152 | — | 363 | 202 | 170 | 212 | 203 | 259 | 209 | 161 | 94 | 181 | 227 | 167 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 140 | 128 | 140 | 140 | 140 | 353 | 306 | 34 | 39 | 306 | 337 | 353 | 353 | 353 | 359 | 306 | 354 | 354 | 165 | 49 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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