Surf Forecasts:
How big are the waves at Cable Bay (Porth Trecastell) today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 1.5ft (0.4m), 4s period with SW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 1ft (0.3m), 5s period with SW swell.
- Evening surf: Evening surf (17 Aug, local time) - 2ft (0.6m), 4s period with SSW swell.
The current surf forecast for Cable Bay (Porth Trecastell) at 7PM is: 0.3m 5s primary swell from a Southwest direction and 0.2m 3s secondary swell from a West-northwest direction (forecast issued at 12:00pm August 17). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 1.5ft (0.4m) | 4s |
| Afternoon (17 Aug) | 1ft (0.3m) | 5s |
| Evening (17 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 14°C on Tue night). Mainly fresh winds. | |||||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 5 | SW 5 | SW 5 | SW 5 | SSW 4 | SW 4 | WSW 4 | SW 5 | WSW 4 | SW 6 | SW 6 | SW 6 | WSW 3 | WSW 4 | WSW 4 | WSW 4 | SW 5 | SW 5 | SW 5 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 4 | 4 | 14 | 22 | 26 | 18 | 31 | 23 | 17 | 16 | 9 | 24 | 37 | 35 | 49 | 74 | 63 | 89 | 124 |
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 | on | cross-on | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on |
High Tide | 1:04PM3.73m | 1:21AM3.95m | 1:44PM3.51m | 2:05AM3.58m | 2:29PM3.25m | ||||||||||||||||
Low Tide | 7:34AM0.15m | 7:45PM0.46m | 8:13AM0.53m | 8:25PM0.77m | 8:54AM0.92m | 9:10PM1.10m | |||||||||||||||
 | | | |  | |  | | | | | | |  |  |  |  | |  | | | |
 | 6:00 | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | 8:42 | — | — | — | — | — | — | — | 8:39 | — | — | — | — | — | — | — | 8:37 | — |
mm | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 1 | 1 |
Temp °C | 16 | 16 | 16 | 16 | 16 | 18 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 16 | 15 | 14 | 15 | 16 | 16 | 16 | 16 |
Feels °C | 16 | 16 | 15 | 14 | 12 | 17 | 14 | 13 | 13 | 13 | 14 | 15 | 13 | 12 | 11 | 9 | 9 | 10 | 11 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 5 | SW 5 | WNW 3 | — | — | — | SW 5 | — | SW 6 | NW 4 | NW 4 | — | — | S 17 | SW 17 | NW 5 | SW 16 | S 15 | SW 15 | SW 16 |
| kJ | 6 | 6 | 4 | 1 | — | — | — | 18 | — | 23 | 8 | 4 | — | — | 6 | 11 | 1 | 10 | 5 | 9 | 10 |
Swell 2 Height (m) Direction Period (s) | — | — | NW 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | — | — | — | — |
| kJ | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | WNW 3 | WNW 3 | SW 5 | SSW 4 | SW 4 | WSW 4 | WNW 4 | WSW 4 | WNW 4 | SW 6 | SW 6 | WSW 3 | WSW 4 | WSW 4 | WSW 4 | SW 5 | SW 5 | SW 5 | SW 6 | SW 6 |
| kJ | 3 | 2 | 2 | 4 | 14 | 22 | 26 | 14 | 31 | 12 | 17 | 16 | 9 | 24 | 37 | 35 | 49 | 74 | 63 | 89 | 124 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 258 | 258 | 297 | 397 | 334 | 541 | 393 | 185 | 44 | 44 | 596 | 507 | 261 | 261 | 187 | 187 | 261 | 261 | 244 | 256 | 258 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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