Surf Forecasts:
How big are the waves at Llantwit Major today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 1.5ft (0.5m), 10s period with W swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 2.5ft (0.8m), 10s period with W swell.
- Evening surf: Evening surf (20 Sep, local time) - 2ft (0.6m), 9s period with W swell.
The current surf forecast for Llantwit Major at 1AM is: 1.0m 7s primary swell from a West direction and 0.5m 10s secondary swell from a West direction (forecast issued at 06:00pm September 19). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 1.5ft (0.5m) | 10s |
| Afternoon (20 Sep) | 2.5ft (0.8m) | 10s |
| Evening (20 Sep) | 2ft (0.6m) | 9s |
Table - waves today at Llantwit Major. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 19°C on Tue morning, min 13°C on Sun night). Winds decreasing (fresh winds from the W on Sat afternoon, calm by Sun night). | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 7 | WSW 7 | W 7 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 270 | 229 | 131 | 102 | 96 | 73 | 51 | 149 | 111 | 80 | 57 | 59 | 41 | 27 | 17 | 16 | 16 | 17 | 9 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross | glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:05AM6.19m | 1:52PM6.13m | 2:52AM5.96m | 3:43PM6.24m | |||||||||||||||
Low Tide | 6:41PM3.37m | 7:20AM3.64m | 8:22PM3.70m | 9:12AM3.70m | |||||||||||||||
 | |  | |  | | | |  | |  | | | | | | | | | |
 | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — |
 | — | 7:20 | — | — | — | — | — | — | — | 7:17 | — | — | — | — | — | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 16 | 16 | 16 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 13 | 13 | 14 | 17 | 18 | 18 | 17 |
Feels °C | 13 | 12 | 11 | 11 | 13 | 12 | 10 | 11 | 12 | 12 | 12 | 13 | 11 | 10 | 12 | 15 | 16 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | — | — | W 7 | W 10 | W 10 | WSW 10 | W 6 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 7 | WSW 7 | W 7 | W 7 | W 7 | W 7 |
| kJ | — | — | 131 | 47 | 49 | 32 | 51 | 149 | 111 | 80 | 57 | 59 | 41 | 27 | 17 | 16 | 16 | 17 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | W 10 | — | — | — | W 10 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 32 | — | — | — | 49 | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 8 | W 8 | — | W 7 | W 7 | W 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 270 | 229 | — | 102 | 96 | 73 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 355 | 316 | 191 | 118 | 88 | 129 | 40 | 39 | 39 | 58 | 51 | 0 | 51 | 51 | 51 | 84 | 154 | 147 | 134 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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