Surf Forecasts:
Southerndown surf forecast from 10 Sep 2026:
- Best quality surf: Monday 14 Sep, 10PM (local time) - 2.5ft (0.7m), 9s period, WSW swell with glassy winds.
- Most powerful swell: Friday 11 Sep, 1AM (local time) - 4.5ft (1.4m), 9s period, W swell with 332 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 10PM (local time) - 2.5ft (0.7m), 9s 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 Monday (Sep 14) at 10PM. The primary swell is predicted to be 0.7m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Southerndown in the next 16 days are 1.4m 9s and forecast to arrive on Friday (Sep 11) at 1AM. 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+) | 10PM (Mon 14th Sep) | 2.5ft (0.7m) 9s |
| Best Surf | 10PM (Mon 14th Sep) | 2.5ft (0.7m) 9s |
| Most Powerful | 1AM (Fri 11th Sep) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Southerndown over the next 16 days.
The Lowdown
Alright, let’s break down Southerndown.
First off, the water is sitting at 67°, which is much warmer than usual for this time of year. But it’s not gonna make up for the surf. For the first ten days or so, it’s pretty much a washout. The wind is mostly onshore or cross-onshore, blowing 15 to 40 km/h, and the swell is short-period junk—0.3 ft to 2 ft with combined energy levels that are weak to moderate at best (217 down to as low as 22). The surf quality is labeled poor across the board, so don’t bother paddling out.
Then the 23rd of September rolls in and everything changes. Wednesday morning and afternoon both go glassy—5 km/h from the east in the morning, 5 km/h from the west-southwest in the afternoon. The swell jumps to a clean 2 ft (that’s 7 ft if you’re reading it any other way) from the west-southwest with an 8-second period. Combined swell energy rockets into strong territory: 582 in the morning and 644 in the afternoon. That’s the standout of the whole 16-day window. The catch? At over 3 ft, this is expert territory—not for the faint of heart or the beginner. Crowds are possible, so expect some locals out. If you’ve got the skills, this is the session.
The 24th still looks decent. Thursday morning stays clean with a cross-off breeze from the east at 15 km/h, and the swell drops to 1 ft from the west (period 8 seconds, moderate energy at 326). That afternoon brings a 0.9 ft swell from the west-southwest with a longer 11-second period, which usually means better shaped waves and easier paddle-outs. Combined energy is moderate at 282, and the wind is light and clean from the east-southeast. Not the big day, but definitely workable.
By the 25th, it fades back to weaker, ordinary conditions, and that’s the end of it.
So yeah, it’s a long, flat wait, but the 23rd of September is the one to mark on your calendar.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sat night. Very mild (max 18°C on Thu night, min 14°C on Fri night). Winds decreasing (fresh winds from the SW on Thu afternoon, light winds from the WSW by Fri night). | Days 5-7 Weather SummarySome drizzle, heaviest during Tue morning. Warm (max 20°C on Mon afternoon, min 14°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the NW by Tue morning). | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 6 | W 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 6 | W 7 | WSW 7 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 6 | WSW 6 | W 6 | W 8 | W 9 | W 9 | W 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 126 | 332 | 181 | 140 | 72 | 94 | 142 | 206 | 86 | 132 | 88 | 84 | 80 | 25 | 39 | 80 | 149 | 162 | 130 | 94 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | on | cross | cross | cross | cross | cross |
High Tide | 6:48PM8.96m | 7:10AM8.88m | 7:28PM9.32m | 7:48AM9.13m | 8:06PM9.42m | 8:24AM9.15m | 8:41PM9.27m | 8:59AM8.95m | 9:16PM8.90m | 9:32AM8.57m | 9:49PM8.36m | 10:05AM8.05m | 10:23PM7.72m | |||||||
Low Tide | 1:04AM0.34m | 1:17PM0.31m | 1:40AM0.07m | 1:53PM0.11m | 2:13AM0.04m | 2:26PM0.13m | 2:45AM0.22m | 2:58PM0.36m | 3:16AM0.58m | 3:30PM0.76m | 3:47AM1.08m | 4:03PM1.29m | ||||||||
 |  |  | | |  | |  |  | | | | | |  | | | | |  | |
 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — |
 | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — |
mm | 3 | — | — | — | — | — | — | 11 | — | — | — | — | — | — | 1 | — | — | — | — | 1 |
Temp °C | 17 | 18 | 18 | 17 | 14 | 18 | 18 | 18 | 17 | 17 | 18 | 19 | 20 | 19 | 18 | 19 | 16 | 16 | 17 | 14 |
Feels °C | 13 | 14 | 16 | 14 | 12 | 13 | 14 | 17 | 16 | 14 | 18 | 18 | 19 | 21 | 17 | 13 | 13 | 11 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 9 | WSW 9 | WSW 9 | WSW 8 | W 8 | — | W 7 | WSW 7 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 6 | WSW 8 | W 10 | W 8 | W 9 | — | W 10 |
| kJ | 89 | 332 | 181 | 140 | 72 | 64 | — | 206 | 86 | 132 | 88 | 84 | 80 | 25 | 20 | 19 | 149 | 162 | — | 94 |
Swell 2 Height (m) Direction Period (s) | W 11 | — | — | — | — | — | — | — | WSW 9 | — | — | — | — | WSW 8 | W 11 | — | — | — | — | — |
| kJ | 2 | — | — | — | — | — | — | — | 29 | — | — | — | — | 23 | 9 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 9 | — | — | — | WSW 8 | WSW 6 | WSW 7 | — | — | — | — | — | — | WSW 6 | W 6 | — | — | W 9 | — |
| kJ | 126 | 308 | — | — | — | 94 | 142 | 188 | — | — | — | — | — | — | 39 | 80 | — | — | 130 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 233 | 81 | 30 | 49 | 128 | 140 | 190 | 154 | 31 | 246 | 93 | 140 | 117 | 12 | 498 | 353 | 31 | 135 | 31 | 30 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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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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