Surf Forecasts:
Southerndown surf forecast from 21 Aug 2026:
- Best quality surf: Friday 28 Aug, 7AM (local time) - 4.5ft (1.4m), 6s period, WSW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 7AM (local time) - 4.5ft (1.4m), 6s period, WSW swell with 151 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 7AM (local time) - 4.5ft (1.4m), 6s 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 Friday (Aug 28) at 7AM. The primary swell is predicted to be 1.4m and 6s 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 1.4m 6s and forecast to arrive on Friday (Aug 28) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 25) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 28th Aug) | 4.5ft (1.4m) 6s |
| Best Surf | 7AM (Fri 28th Aug) | 4.5ft (1.4m) 6s |
| Most Powerful | 7AM (Fri 28th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright, Rusty here. Let's run through this. Southerndown is a fairly consistent spot that's good for beginners, pretty exposed to a SW groundswell, and it goes best with a NE offshore. Water temp is running about average for late summer, nothing weird going on there.
We’re looking at a long, flat spell to kick things off. From the 21st of August all the way through to the morning of the 27th of August, there’s absolutely nothing worth paddling for. Tiny swell, mostly onshore or cross-shore wind, and the combined energy readings are all under 100 – weak. A real dud period.
The only real standout comes on the morning of Friday, the 28th of August. Southerndown picks up a 4ft swell from the WSW, with a 7-second period and a combined swell energy of 233 – that's moderate. The wind is offshore from the NE at 9 mph, keeping things clean and glassy. The report calls it "surfable waves but very ordinary conditions." For this stretch, that’s as good as it gets. It’s a small, weak, crumbly wave, but it’s rideable and clean. Beginners will be fine on it, but there's no power behind it.
The 29th of August brings a bigger pulse: 6ft to 6ft from the WSW, with energy jumping to 318 and 388, still moderate. But the wind is cross-onshore from the W and WSW at 15-18 mph, making it a choppy, lumpy mess. That size with onshore wind? That’s more of a kiteboarding day than a surf session.
After that, from the 30th of August through the 5th of September, it’s back to tiny drivel. The 31st of August morning shows a 3ft swell with 7-second period and 218 energy, but it’s onshore wind at 18 mph with thunderstorms. Hard pass. There’s a long-period 14-15 second groundswell on the 3rd and 4th of September, but it’s only 0.3ft. Even with cross-off winds on the 4th, it’s too small to break properly at a beach break.
The one and only call is the morning of Friday the 28th of August. Get out early for a clean but weak session on small waves. It’s slim pickings, but it’s the best we’ve got.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 21°C on Sun afternoon, min 12°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Wed morning. Warm (max 26°C on Tue afternoon, min 14°C on Sun night). Winds increasing (calm on Sun night, strong winds from the E by Mon night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | W 9 | WSW 8 | WSW 8 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 11 | WSW 10 | WSW 9 | SW 13 | W 13 | SE 4 | SW 5 | W 9 | SSW 4 | SW 6 | WSW 8 | WSW 8 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 22 | 10 | 18 | 17 | 8 | 8 | 8 | 11 | 9 | 8 | 7 | 3 | 16 | 4 | 6 | 20 | 54 | 51 | 44 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | off | glassy | cross-on | glassy | cross-off | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 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 | 6:49AM7.76m | 7:05PM8.26m | ||||||||
Low Tide | 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 | 12:57PM1.25m | 1:17AM0.97m | |||||||
 |  |  |  | |  | | | | | |  | | | | |  |  | | | | |
 | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:12 | — |
mm | — | 2 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | 4 | 6 | 2 | 3 | 1 | 2 | 6 |
Temp °C | 17 | 18 | 16 | 17 | 19 | 16 | 19 | 21 | 19 | 21 | 24 | 18 | 23 | 26 | 19 | 20 | 22 | 16 | 19 | 20 | 16 |
Feels °C | 13 | 15 | 12 | 14 | 15 | 13 | 17 | 18 | 17 | 16 | 18 | 11 | 17 | 22 | 19 | 16 | 16 | 14 | 15 | 18 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | WSW 8 | W 5 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 11 | WSW 10 | WSW 9 | SW 9 | W 8 | W 8 | SW 5 | SW 4 | W 9 | SW 6 | WSW 8 | WSW 8 | WSW 11 |
| kJ | 39 | 22 | 5 | 18 | 17 | 8 | 8 | 7 | 11 | 9 | 8 | 3 | 1 | 1 | 4 | 4 | 6 | 54 | 51 | 44 | 11 |
Swell 2 Height (m) Direction Period (s) | — | W 13 | WSW 8 | SW 15 | SW 15 | — | SW 14 | SW 14 | — | SW 14 | SW 14 | SW 13 | SW 9 | SW 8 | W 8 | W 9 | — | WSW 8 | — | — | W 7 |
| kJ | — | 3 | 7 | 9 | 9 | — | 8 | 8 | — | 8 | 8 | 7 | 3 | 3 | 1 | 6 | — | 12 | — | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 16 | W 15 | — | SW 15 | W 15 | — | — | — | — | — | W 13 | W 13 | SW 8 | SW 8 | — | — | — | — | SW 8 |
| kJ | — | — | 10 | 5 | — | 8 | 4 | — | — | — | — | — | 3 | 3 | 3 | 2 | — | — | — | — | 10 |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 3 | NE 2 | — | — | — | — | — | — | — | ESE 3 | E 3 | ESE 3 | SE 4 | SSE 4 | — | SSW 4 | — | SE 2 | SSE 3 | WSW 4 |
| kJ | 3 | 2 | 1 | — | — | — | — | — | — | — | 1 | 8 | 12 | 16 | 1 | — | 20 | — | 1 | 4 | 12 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 236 | 92 | 43 | 208 | 51 | 86 | 159 | 43 | 425 | 114 | 292 | 315 | 327 | 169 | 252 | 247 | 54 | 51 | 425 | 52 |
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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