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Surf Forecasts:

Black Rock surfForecast / Wales – South East / UK

information circle12 Day Weather and Surf, issued 12 am Tuesday 26 Aug 2025 BST
Forecast update in hr  min  s Forecast update imminent
Black Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Black Rock sea temperature is
19.4° C
 (Which is 3.2°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Black Rock this week:

The surf forecast for Black Rock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 02) at 7AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.8m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Black Rock in the next 12 days are 2.3m 18s and forecast to arrive on Tuesday (Aug 26) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 2nd Sep)2.5ft (0.8m) 10s
Best Surf 7AM (Tue 2nd Sep)2.5ft (0.8m) 10s
Most Powerful10AM (Tue 26th Aug)7.5ft (2.3m) 18s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 25mm), heaviest during Wed night. Very mild (max 19°C on Mon night, min 15°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the WSW by Thu afternoon).

Days 3-6 Weather Summary Heavy rain (total 43mm), heaviest during Fri night. Very mild (max 17°C on Fri morning, min 15°C on Fri night). Mainly strong winds.

Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Mon
01
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
WSW
2.3
WSW
2.3
WSW
1.8
WSW
1
WSW
1
W
1.3
WSW
1.2
WSW
1.4
WSW
1.7
WSW
2.2
WSW
2.1
WSW
1.6
W
1.4
WSW
1.2
WSW
1.7
WSW
2
WSW
2.1
WSW
1.7
WSW
2.1
WSW
3
WSW
Period(s) (?)19181615141311121288889888911810
Wave
Graph
(?)Metric surfscale
Energy (?)108556374921155163687642340454184461457458450620238552371311285501433
Wind
(km/h)
15
S
25
WSW
30
WSW
20
SSW
35
SW
25
W
20
SW
35
SW
35
WSW
35
W
35
W
40
W
25
WSW
40
WNW
45
WSW
40
WSW
40
WSW
35
W
25
W
20
WSW
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		ononcross-
on		oncross-
on		cross-
on		cross-
on		crosscross-
on		cross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
9:00AM
8.62
9:16PM
8.77
9:32AM
8.40
9:48PM
8.42
10:03AM
8.05
10:19PM
7.95
10:35AM
7.61
10:52PM
7.40
11:09AM
7.09
11:29PM
6.81
11:51AM
6.54
12:17AM
6.24
12:49PM
6.03
Low Tide
/ height (m)
2:50AM
0.48
3:01PM
0.58
3:20AM
0.67
3:31PM
0.81
3:49AM
1.00
4:02PM
1.18
4:19AM
1.44
4:34PM
1.65
4:52AM
1.96
5:10PM
2.20
5:31AM
2.51
5:56PM
2.76
6:24AM
3.04
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Mon
01
Sunrise-6:16--6:18--6:18--6:20--6:22--6:24--6:26-
Sunset--8:15--8:13--8:10--8:07--8:06--8:04--8:01
rain showers
rain showers
part cloud
rain showers
light rain
rain showers
rain showers
mod rain
thunderstorm
thunderstorm
rain showers
clear
heavy rain
rain showers
clear
rain showers
rain showers
rain showers
rain showers
light rain
thunderstorm
Rain (mm)
41-231464103-144-732447
Temp. °C191818171717161617161717171717161717161615
Feels °C (?)191413131212131111910101311109111111128
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Wales - South East

  1. weather stationWind Update The wind is still cross-on at Black Rock (moderate winds from the W at St Athan 19 km from Black Rock). 1.2m 17s long period groundswell from the W with a 0.6m 10s swell from the WSW. 2 swells combining to make bigger set waves.

    1 hour 9 minutes ago Black Rock
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19 km away, 1 h 9 min ago

20 km/h
W
0.0
19.4
Air / Water (°C)
Please reload the page to see if there are any updates.

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 Black Rock 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.

View detailed surf forecast for Black Rock at:
surf-forecast.com

Information about the Black Rock Surf forecast

The above surf forecast table for Black Rock provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Black Rock can be found by selecting the local surf guide option on the grey menu. Our Black Rock 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 (Black Rock) 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 Black Rock 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.

Black Rock is 2 km (1 miles) from Porthcawl. If you plan a holiday in Wales - South East, look for hotels and other accommodation in Porthcawl. Porthcawl has rooms for a wide range of budgets as well as car hire and transport links.

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