Southerndown Surf Forecast

/ Wales – South East (14 surf breaks) /

UK (471 surf breaks) / Lat Long: (51.45° N 3.61° W)

Surf Forecasts:

Southerndown surfForecast / Wales – South East / UK

12 Day Weather and Surf, issued 6 pm Thursday 04 Sep 2025 BST

Forecast update in hr min s Forecast update imminent

Southerndown surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Southerndown sea temperature is 18.8° C
(Which is 2.6°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Southerndown this week:

The surf forecast for Southerndown over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 05) at 10PM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Southerndown in the next 12 days are 3.0m 14s and forecast to arrive on Monday (Sep 08) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Sep 06) at 10PM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	10PM (Fri 5th Sep)	2.5ft (0.8m) 9s
Best Surf	10PM (Fri 5th Sep)	2.5ft (0.8m) 9s
Most Powerful	1PM (Mon 8th Sep)	10ft (3.0m) 14s

Table - best surf conditions forecast for Southerndown over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Light rain (total 3mm), mostly falling on Sun morning. Warm (max 21°C on Sat afternoon, min 14°C on Thu night). Winds increasing (calm on Fri night, fresh winds from the SSE by Sun morning).											Days 3-6 Weather Summary Heavy rain (total 20mm), heaviest during Mon afternoon. Very mild (max 18°C on Tue morning, min 14°C on Sun night). Winds decreasing (near gales from the SSE on Mon morning, light winds from the SSE by Tue night).
	Thu 04		Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SSW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	12	11	10	9	9	9	9	7	7	10	10	13	13	11	10	10	9	8	9	10	9
Wave Graph (?)
Energy (?)	988	505	263	156	86	45	53	35	82	491	292	4106	2778	1557	540	943	295	310	1276	1218	933
Wind (km/h)	W	WNW	W	WSW	SE	ESE	SE	SE	SSE	WSW	SSE	SSE	SSW	SW	SW	SSW	SSE	W	SW	WSW	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross	cross- on	cross- on	cross	cross- off	cross	cross	cross- on	on	cross- on	cross- on	on	on	on	on	cross	cross- on	on	cross- on	cross- on
High Tide / height (m)	5:03PM 6.74		5:29AM 6.96	5:50PM 7.52		6:12AM 7.71	6:30PM 8.30		6:51AM 8.41		7:08PM 8.98	7:29AM 8.98		7:46PM 9.47	8:07AM 9.34		8:25PM 9.71	8:45AM 9.46		9:04PM 9.65	9:24AM 9.30
Low Tide / height (m)		11:22PM 2.29	11:40AM 1.99		12:06AM 1.55	12:20PM 1.29		12:43AM 0.85	12:57PM 0.65		1:19AM 0.26		1:32PM 0.16	1:54AM -0.13		2:08PM -0.14	2:30AM -0.28		2:44PM -0.19	3:06AM -0.14

	Thu 04		Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
Sunrise	-	-	6:31	-	-	6:33	-	-	6:35	-	-	6:37	-	-	6:37	-	-	6:39	-	-	6:41
Sunset	7:54	-	-	7:52	-	-	7:50	-	-	7:47	-	-	7:45	-	-	7:44	-	-	7:40	-	-

Rain (mm)	1	-	-	-	-	-	-	-	2	3	-	4	5	4	-	-	3	1	-	3	-
Temp. °C	17	16	17	17	16	20	21	20	18	17	16	17	17	16	18	17	15	17	17	17	17
Feels °C (?)	12	13	14	15	16	15	16	14	13	13	9	12	12	11	15	14	13	12	11	10	10

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Wales - South East

Wind Update The wind is still cross-on at Southerndown (moderate winds from the W at St Athan 13 km from Southerndown). 1.2m 10s swell from the W with a 0.5m 6s windswell, also from the W. 2 swells combining to make bigger set waves.
42 minutes ago Southerndown

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Actual: 42 min ago

26 km/h

Cross-On

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FREE! Surf-Forecast.com widget for your website

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 12 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.