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Gileston Surf Forecast
/ Wales – South East (14 surf breaks) /
Surf Forecasts:
Gileston surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 6 am Thursday 18 Sep 2025 BST
How big are the waves at Gileston today?
The current surf forecast for Gileston at 9AM is: 1.3m 12s primary swell from a West-southwest direction (forecast issued at 06:00am September 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 4.5ft (1.3m) | 12s |
| Afternoon (18 Sep) | 4.5ft (1.3m) | 12s |
| Evening (18 Sep) | 4ft (1.2m) | 11s |
Table - waves today at Gileston. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 672 | 579 | 486 | 470 | 422 | 350 | 286 | 245 | 231 | 226 | 226 | 231 | 192 | 157 | 125 | 96 | 92 | 61 | 60 | 59 | 40 | 40 | 45 | 39 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | glass | glass | cross- off | cross | cross- on | cross | cross- on | on | on |
High Tide / height (m) | 4:54AM 7.25 | 5:22PM 7.78 | 5:50AM 7.89 | 6:11PM 8.45 | 6:34AM 8.49 | 6:52PM 9.00 | ||||||||||||||||||
Low Tide / height (m) | 11:28AM 2.57 | 12:01AM 2.07 | 12:18PM 1.95 | 12:43AM 1.51 | 12:55PM 1.42 | |||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:22 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:16 | - | - |
 |  | |  | |  |  | |  | | | | | | | | |  | | | | | | | |
Rain (mm) | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 18 | 20 | 21 | 19 | 17 | 16 | 16 | 16 | 17 | 20 | 22 | 18 | 16 | 16 | 15 | 15 | 16 | 20 | 18 | 17 | 15 | 13 |
| Feels °C (?) | 16 | 15 | 15 | 18 | 19 | 18 | 15 | 15 | 16 | 16 | 16 | 18 | 21 | 17 | 16 | 17 | 16 | 14 | 14 | 18 | 14 | 11 | 7 | 4 |
- 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
Onshore wind has changed to cross-on at Gileston (moderate winds from the WSW at St Athan 2 km from Gileston). 1.1m 10s swell from the WSW to make surfable waves.
1 h 2 min ago
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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 Gileston 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.
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