Surf Forecasts:
Southerndown surf forecast from 4 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 5ft (1.5m), 7s period, WSW swell with 198 kJ wave energy.
Best Forecast Surf Conditions for Southerndown this week:
The most powerful waves expected at Southerndown in the next 16 days are 1.5m 7s and forecast to arrive on Wednesday (Aug 05) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (Aug 09) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Wed 5th Aug) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: the next 16 days at Southerndown are a tough watch. We’re looking at a long, barren stretch of poor surf conditions that runs right through to the start of the second week. The water is sitting at a very unusual 69°F, which is a massive 8°F warmer than normal for this time of year—that’s a real oddity, but it won’t help the waves.
The first real glimmer of hope doesn’t arrive until the morning of Sunday the 17th of August. That morning, we finally see a clean, offshore breeze from the NE at 6 mph, with a 3ft swell from the WSW. The combined swell energy is weak at 82, and the period is a short 7 seconds, so it’s not going to be a thing of beauty, but it’s surfable. The wind is clean, which is a massive positive after all that chop.
However, the true standout, the one to circle on the calendar, is the morning of Tuesday the 19th of August. The wind goes glassy—literally glassy, from the SW at just 3 mph. The swell bumps up to 5ft from the W, with a moderate combined energy of 359 and a period of 9 seconds. That’s a solid, clean wave for Southerndown. The direction is WSW, which is spot-on for this fairly exposed break. It’s worth noting that at 5ft, it’s getting into “too big for beginners” territory, but for the rest of us, this is the best window in the whole forecast. The afternoon chops it up with a cross-onshore wind, so make that morning session count.
Before that, the morning of Monday the 18th of August is also worth a mention. We get a 4ft swell from the WSW with a glassy, offshore wind from the SW at 3 mph. The combined energy is 147, and it’s surfable, but it’s not as punchy as the 19th. The 19th is the one.
For the rest of the run? The mornings of the 15th and 16th of August do show clean, cross-offshore winds, but the swell is tiny—3ft and 1.0ft respectively—so there’s just not enough juice to get excited about.
So, to sum it up: the first two weeks are a write-off. The 17th is a cautious re-entry, but the 19th of August is the day to be on it. Get out there early for the glass.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 21°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed afternoon, calm by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun afternoon, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 7 | WSW 7 | WSW 6 | WSW 6 | WSW 7 | W 6 | WSW 6 | WSW 6 | W 5 | WSW 5 | WSW 5 | WSW 4 | W 9 | W 9 | WSW 8 | WSW 7 | W 7 | W 6 | WSW 5 | W 6 | WSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 81 | 81 | 90 | 108 | 198 | 78 | 68 | 58 | 14 | 5 | 7 | 5 | 2 | 2 | 7 | 37 | 43 | 18 | 9 | 15 | 5 |
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-on | cross-on | cross | on | cross-on | cross | cross-on | cross-on | cross | on | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 10:44AM8.04m | 11:03PM8.10m | 11:27AM7.71m | 11:50PM7.67m | 12:18PM7.30m | 00:47AM7.20m | 1:22PM6.93m | 2:01AM6.85m | 2:44PM6.79m | 3:28AM6.84m | 4:08PM7.06m | 4:47AM7.24m | 5:18PM7.66m | ||||||||
Low Tide | 4:38PM1.17m | 5:03AM1.29m | 5:22PM1.51m | 5:50AM1.68m | 6:15PM1.92m | 6:50AM2.11m | 7:26PM2.29m | 8:09AM2.39m | 8:54PM2.39m | 9:39AM2.34m | 10:24PM2.09m | 10:59AM1.92m | 11:36PM1.52m | ||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | | |
 | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 18 | 16 | 17 | 17 | 16 | 16 | 15 | 17 | 17 | 15 | 18 | 20 | 17 | 21 | 22 | 18 | 19 | 20 | 19 |
Feels °C | 20 | 17 | 15 | 10 | 10 | 12 | 10 | 9 | 12 | 14 | 14 | 13 | 15 | 16 | 14 | 18 | 18 | 15 | 18 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | — | — | — | — | — | W 11 | W 10 | W 5 | WSW 5 | W 9 | WSW 4 | W 4 | W 9 | W 4 | WSW 7 | — | W 6 | WSW 5 | W 8 | WSW 5 |
| kJ | 54 | — | — | — | — | — | 2 | 8 | 14 | 5 | 2 | 5 | 1 | 2 | 3 | 37 | — | 18 | 9 | 1 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 10 | W 9 | W 9 | W 9 | W 9 | — | WSW 8 | — | — | W 9 | W 8 | — | SW 7 |
| kJ | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 2 | 2 | — | 7 | — | — | 1 | 1 | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 6 | WSW 6 | WSW 7 | W 6 | WSW 6 | WSW 6 | — | — | WSW 5 | — | — | W 4 | — | — | W 7 | — | — | W 6 | — |
| kJ | 81 | 81 | 90 | 108 | 198 | 78 | 68 | 58 | — | — | 7 | — | — | 1 | — | — | 43 | — | — | 15 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 140 | 306 | 162 | 353 | 306 | 388 | 79 | 360 | 257 | 337 | 337 | 354 | 354 | 352 | 92 | 43 | 352 | 196 | 439 | 353 | 367 |
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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