Surf Forecasts:
How big are the waves at Llanddwyn Island today (11 Sep):
- Morning surf: Morning surf (11 Sep, local time) - 2.5ft (0.7m), 6s period with SW swell.
- Afternoon surf: Afternoon surf (11 Sep, local time) - 1.5ft (0.5m), 6s period with SW swell.
- Evening surf: Evening surf (11 Sep, local time) - 1.5ft (0.4m), 6s period with SW swell.
The current surf forecast for Llanddwyn Island at 8PM is: 0.4m 6s primary swell from a Southwest direction and 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm September 11). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Sep) | 2.5ft (0.7m) | 6s |
| Afternoon (11 Sep) | 1.5ft (0.5m) | 6s |
| Evening (11 Sep) | 1.5ft (0.4m) | 6s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Sat morning. Very mild (max 17°C on Sat afternoon, min 13°C on Fri night). Mainly fresh winds. | |||||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | |||||||||||||||||||
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 6 | SW 7 | SW 6 | SW 6 | SW 6 | SW 3 | SW 5 | SW 6 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 27 | 20 | 14 | 14 | 9 | 70 | 155 | 244 | 289 | 299 | 215 | 144 | 97 | 73 | 52 | 33 | 19 | 13 | 13 | 13 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | glassy | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross | cross-off | glassy | on | cross-on | cross-on |
High Tide | 10:06AM4.03m | 10:17PM4.51m | 10:42AM4.11m | 10:54PM4.52m | 11:16AM4.11m | ||||||||||||||||
Low Tide | 4:43PM-0.03m | 5:10AM-0.34m | 5:22PM-0.06m | 5:48AM-0.24m | 5:59PM0.01m | ||||||||||||||||
 |  | | |  | |  |  | | | | |  |  | | |  | | | |  | |
 | 6:43 | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — |
 | — | — | — | 7:44 | — | — | — | — | — | — | — | 7:40 | — | — | — | — | — | — | — | 7:38 | — |
mm | — | — | — | — | — | — | — | 1 | 3 | 1 | — | — | 1 | 1 | 1 | — | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 15 | 14 | 13 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 16 | 15 | 15 | 16 | 16 | 16 | 16 |
Feels °C | 11 | 12 | 12 | 14 | 12 | 9 | 8 | 9 | 11 | 12 | 15 | 15 | 16 | 17 | 15 | 15 | 15 | 16 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 7 | SW 6 | SW 6 | — | — | — | — | — | — | — | — | — | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | 34 | 27 | 20 | 14 | — | — | — | — | — | — | — | — | — | 97 | 73 | 52 | 33 | 19 | 13 | 13 | 13 |
Swell 2 Height (m) Direction Period (s) | — | — | — | NW 4 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | NW 4 | NW 4 | — | SW 6 | SW 3 | SW 5 | SW 6 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | — | — | — | — | — | — | — |
| kJ | 10 | 8 | 4 | — | 14 | 9 | 70 | 155 | 244 | 289 | 299 | 215 | 144 | 96 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 164 | 164 | 35 | 173 | 175 | 273 | 284 | 291 | 272 | 342 | 255 | 106 | 106 | 106 | 35 | 164 | 164 | 144 | 164 | 144 | 267 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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‘Porth Neigwl: Choppy waves hadn't tidied much (from what I could see in the dark.’
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