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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 am Thursday 16 Oct 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
15.4° C
 (Which is 1.1°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 Monday (Oct 20) at 4PM. The primary swell is predicted to be 1.6m and 9s period. 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 2.1m 9s and forecast to arrive on Monday (Oct 20) at 10AM. 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 2s period and expected on Thursday (Oct 23) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Mon 20th Oct)5ft (1.6m) 9s
Best Surf 4PM (Mon 20th Oct)5ft (1.6m) 9s
Most Powerful10AM (Mon 20th Oct)7ft (2.1m) 9s

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 Light rain (total 6mm), mostly falling on Sat night. Very mild (max 15°C on Fri afternoon, min 9°C on Thu morning). Mainly fresh winds.

Days 3-6 Weather Summary Heavy rain (total 38mm), heaviest during Mon night. Very mild (max 16°C on Sun afternoon, min 12°C on Mon afternoon). Winds decreasing (fresh winds from the WSW on Sun night, calm by Mon afternoon).

Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
0
0
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
WSW
0.3
WSW
0.2
WSW
0.2
W
0.1
W
0.1
W
0.2
WSW
0.6
SE
0.4
WSW
1
SW
1.1
SW
1.1
WSW
2.1
WSW
1.6
WSW
1.7
WSW
1.6
WSW
1.4
WSW
1.1
WSW
0.8
WSW
0.4
WSW
0.5
WSW
Period(s) (?)12119891384911101099998871010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4724862371135229211226645396506442284131543955
Wind
(km/h)
15
ENE
10
E
15
E
15
E
15
E
15
E
25
ESE
30
SE
25
ESE
30
ESE
30
SSW
35
WSW
20
S
5
SE
15
WNW
15
WNW
20
WNW
30
WNW
15
WNW
5
NNW
15
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrossoncross-
on		cross-
on		glasscrosscrosscrosscrosscrosscross-
off		cross-
off
High Tide
/ height (m)
3:40PM
6.69
4:19AM
6.68
4:43PM
7.18
5:11AM
7.21
5:29PM
7.67
5:51AM
7.71
6:07PM
8.08
6:26AM
8.11
6:41PM
8.38
6:58AM
8.40
7:13PM
8.56
7:29AM
8.56
7:44PM
8.59
Low Tide
/ height (m)
10:15PM
2.35
10:38AM
2.32
11:08PM
1.88
11:24AM
1.83
11:47PM
1.44
12:00PM
1.39
12:19AM
1.09
12:32PM
1.05
12:48AM
0.84
1:01PM
0.81
1:16AM
0.71
1:30PM
0.69
1:44AM
0.71
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Sunrise7:39--7:41--7:41--7:43--7:46--7:47--7:48--
Sunset-6:20--6:17--6:15--6:14--6:12--6:09--6:07-
clear
clear
clear
clear
clear
part cloud
cloud
cloud
mod rain
mod rain
heavy rain
rain showers
light rain
light rain
rain showers
cloud
rain showers
part cloud
cloud
clear
part cloud
Rain (mm)
--------661142211-2----
Temp. °C121413131513141412151616131313131413121210
Feels °C (?)812109121088711121491211111088107
  • 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-off at Trecco Bay (light winds from the ENE at St.Athan 19 km from Trecco Bay). 0.3m 11s groundswell from the W to make surfable waves.

    1 hour 6 minutes ago Trecco Bay
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19 km away, 1 h 6 min ago

11 km/h
ENE
0.0
15.4
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 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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