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Surf Forecasts:

Trecco Bay surf break

Trecco Bay surfForecast / Wales – South East / UK

information circle12 Day Weather and Surf, issued 6 pm Saturday 13 Sep 2025 BST
Forecast update in hr  min  s Forecast update imminent
Trecco Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trecco Bay sea temperature is
18.1° C
 (Which is 2.3°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Trecco Bay this week:

The surf forecast for Trecco Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 7PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.1m and 16s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Trecco Bay in the next 12 days are 4.0m 13s and forecast to arrive on Monday (Sep 15) 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 0.4m 3s period and expected on Saturday (Sep 20) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Fri 19th Sep)2.5ft (0.7m) 9s
Best Surf 7PM (Fri 19th Sep)2.5ft (0.7m) 9s
Most Powerful 1PM (Mon 15th Sep)13ft (4.0m) 13s

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

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

Short Range Forecast Heavy rain (total 42mm), heaviest during Sun afternoon. Very mild (max 18°C on Sun afternoon, min 13°C on Sat night). Winds increasing (light winds from the W on Sat night, near gales from the W by Sun night).

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Wed afternoon. Very mild (max 18°C on Wed morning, min 13°C on Tue night). Winds decreasing (strong winds from the SW on Wed morning, light winds from the W by Fri morning).

Sat
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
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 (?)
1.7
WSW
1.1
WSW
0.9
WSW
1.7
SW
3
WSW
4
WSW
4
WSW
3
WSW
2.2
WSW
1.7
WSW
1.3
WSW
2.2
WSW
2.4
WSW
2.1
WSW
1.5
WSW
1.5
WSW
1.2
WSW
0.9
WSW
0.8
WSW
0.5
WSW
0.4
WSW
Period(s) (?)8786101213121212119101312111010999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)327136872331758432245652780131674137273210801387603505263135964630
Wind
(km/h)
35
W
15
W
25
SE
40
SW
60
W
60
WSW
60
W
50
W
35
W
35
W
25
WSW
40
SW
35
SW
35
WSW
30
WSW
35
WSW
30
WSW
20
WNW
15
WSW
15
E
30
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		crosscrosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
on		cross-
off		cross-
off
High Tide
/ height (m)
11:17PM
7.86
11:43AM
7.48
12:17AM
7.03
12:51PM
6.78
1:38AM
6.39
2:24PM
6.42
3:18AM
6.31
3:58PM
6.66
4:38AM
6.73
5:05PM
7.24
5:34AM
7.31
5:54PM
7.84
6:17AM
7.86
Low Tide
/ height (m)
4:49PM
1.16
5:14AM
1.65
5:45PM
1.93
6:17AM
2.42
7:05PM
2.60
7:53AM
2.92
8:59PM
2.80
9:44AM
2.83
10:33PM
2.42
11:00AM
2.32
11:33PM
1.86
11:50AM
1.74
12:16AM
1.32
12:29PM
1.24
Sat
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Sunrise--6:47--6:48--6:50--6:50--6:52--6:54--6:56
Sunset7:35--7:31--7:30--7:28--7:24--7:22--7:21--
thunderstorm
rain showers
mod rain
rain showers
rain showers
rain showers
rain showers
part cloud
clear
part cloud
heavy rain
mod rain
mod rain
rain showers
part cloud
clear
part cloud
clear
clear
part cloud
cloud
Rain (mm)
41722422---147103-------
Temp. °C151414181615151515151518181616161616161519
Feels °C (?)8910126445881013141410101213141315
  • 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 Still cross-shore at Trecco Bay (light winds from the W at St Athan 20 km from Trecco Bay). A 1.4m swell from the W

    42 minutes ago Trecco Bay
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20 km away, 42 min ago

17 km/h
W
0.0
18.1
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 Trecco Bay 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 Trecco Bay at:
surf-forecast.com

Information about the Trecco Bay Surf forecast

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

Trecco Bay 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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