Surf Forecasts:
Southerndown surf forecast from 14 Sep 2026:
- Most powerful swell: Wednesday 16 Sep, 10AM (local time) - 4ft (1.2m), 10s period, W swell with 257 kJ wave energy.
Best Forecast Surf Conditions for Southerndown this week:
The most powerful waves expected at Southerndown in the next 16 days are 1.2m 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Wed 16th Sep) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright, let’s get real about Southerndown. Frankly, the next week and a half is a tough slog. We’ve got a long dry spell of messy, wind-chopped conditions that just aren’t worth paddling out for. The wind is blowing strong and from the wrong directions, turning what little swell there is into a bumpy, blown-out mess. The swell energy is mostly weak to moderate, but the wind is just ruining any chance of a decent wave.
The first real hope arrives on Sunday, September 20th. It’s not big, with swell around 3ft from the WSW, but the wind is glassy – dead calm. That’s a rare gift here. The wave energy is weak, so it’ll be small and soft, but for a beginner-friendly spot like Southerndown, the clean, smooth conditions make it a rare opportunity for a fun, cruisy session. The water temp is about average for this time of year.
Then we go quiet again, with more small, weak swells and onshore or cross-shore winds. Tuesday, September 22nd afternoon shows a chance: 5ft swell from the west, with a light cross-offshore breeze from the east that will clean things up nicely. The energy is moderate, so there’s some push, if not much shape.
Hold on for September 27th – Sunday. That’s a standout. The morning has 7ft swell from the WSW with clean cross-offshore wind, and solid energy. That’s a decent size, but it’s still within beginner limits. The afternoon jumps up to 7ft from the WSW with a period of 11 seconds and very strong energy. That is a powerful, long-period groundswell. At that size it’ll be pushing it for beginners – it’s more for the experienced crew. The wind is light and cross-shore, so it won’t be perfect but it’ll be a whole lot more interesting than the doldrums before it. Keep an eye on that one, but it’s two weeks out, so it’s a promising maybe.
The last few days tail off into smaller, cleaner but tiny waves, perfect for a longboard if you’re desperate, but nothing to write home about.
Overall, this is a long wait. The first week is a write-off. The best bet is the glassy Sunday the 20th for beginners, or the stronger Sunday the 27th for anyone wanting some real power. Be patient.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Very mild (max 19°C on Mon afternoon, min 14°C on Tue night). Winds increasing (light winds from the WSW on Mon afternoon, fresh winds from the WSW by Wed night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sat morning. Very mild (max 17°C on Fri night, min 12°C on Thu night). Winds increasing (light winds from the NW on Thu night, fresh winds from the WSW by Fri night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 9 | WSW 5 | WSW 6 | W 7 | W 7 | W 8 | W 10 | W 10 | W 10 | W 7 | W 7 | W 8 | WSW 7 | WSW 6 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | WSW 6 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 113 | 51 | 62 | 187 | 171 | 153 | 257 | 244 | 60 | 218 | 203 | 228 | 151 | 125 | 125 | 139 | 168 | 124 | 75 | 59 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on |
High Tide | 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 | 1:33PM5.74m | 2:32AM5.58m | ||||||||
Low Tide | 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 | 7:03AM3.41m | 8:09PM3.44m | ||||||||
 |  |  | | |  |  | |  | | | |  | | | | |  | | | | |
 | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:17 | — |
mm | 1 | — | 1 | — | — | — | — | — | 3 | 1 | — | — | — | 1 | 1 | 3 | — | — | — | — | — |
Temp °C | 18 | 19 | 18 | 16 | 16 | 15 | 15 | 15 | 16 | 16 | 15 | 14 | 15 | 16 | 17 | 17 | 17 | 16 | 18 | 18 | 17 |
Feels °C | 16 | 16 | 17 | 11 | 10 | 11 | 11 | 10 | 10 | 12 | 9 | 9 | 11 | 10 | 12 | 14 | 14 | 15 | 16 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | WSW 8 | W 11 | — | W 8 | W 10 | W 10 | W 6 | — | — | W 8 | — | — | W 12 | — | W 14 | W 14 | WSW 9 | SW 16 | WSW 6 |
| kJ | 101 | — | 14 | 2 | — | 153 | 257 | 102 | 38 | — | — | 228 | — | — | 11 | — | 4 | 4 | 28 | 10 | 41 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 8 | — | — | — | — | — | W 10 | — | — | — | — | — | W 12 | — | — | W 10 | — | W 16 | SW 15 |
| kJ | — | — | 22 | — | — | — | — | — | 52 | — | — | — | — | — | 11 | — | — | 30 | — | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 9 | WSW 5 | WSW 6 | W 7 | W 7 | — | — | W 10 | WSW 5 | W 7 | W 7 | — | WSW 7 | WSW 6 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | WSW 6 | — |
| kJ | 113 | 51 | 62 | 187 | 171 | — | — | 244 | 60 | 218 | 203 | — | 151 | 125 | 125 | 139 | 168 | 124 | 75 | 59 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 140 | 140 | 140 | 353 | 353 | 138 | 39 | 189 | 306 | 39 | 623 | 79 | 381 | 359 | 306 | 263 | 140 | 31 | 138 | 140 | 117 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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