Surf Forecasts:
How big are the waves at Llanddwyn Island today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 2ft (0.6m), 6s period with SW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1.5ft (0.4m), 6s period with SW swell.
- Evening surf: Evening surf (20 Aug, local time) - 1ft (0.3m), 6s period with SW swell.
The current surf forecast for Llanddwyn Island at 5AM is: 0.8m 6s primary swell from a Southwest direction and 0.1m 15s secondary swell from a West direction, 0.6m 4s secondary swell from a West-northwest direction (forecast issued at 12:00am August 20). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 2ft (0.6m) | 6s |
| Afternoon (20 Aug) | 1.5ft (0.4m) | 6s |
| Evening (20 Aug) | 1ft (0.3m) | 6s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Wed night. Very mild (max 15°C on Wed night, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||||||||||
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 | 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 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 14 | SW 14 | SW 14 | W 14 | W 13 | W 13 | SW 13 | W 16 | W 16 | W 16 | SW 13 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 46 | 52 | 23 | 29 | 20 | 10 | 10 | 8 | 8 | 8 | 7 | 7 | 3 | 3 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | off |
High Tide | 2:56AM3.21m | 3:26PM3.00m | 4:05AM2.90m | 4:46PM2.83m | 5:38AM2.76m | 6:19PM2.84m | ||||||||||||||||||
Low Tide | 9:40AM1.27m | 10:08PM1.38m | 10:45AM1.54m | 11:34PM1.55m | 12:20PM1.61m | |||||||||||||||||||
 | |  |  | | |  |  | |  |  |  | | | | | | | | | | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:35 | — | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — |
mm | 1 | 2 | 2 | 2 | 2 | 1 | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 15 | 15 | 15 | 15 | 13 | 13 | 12 | 12 | 13 | 14 | 15 | 15 | 14 | 13 | 12 | 12 | 13 | 14 | 15 | 15 | 14 |
Feels °C | 13 | 12 | 12 | 12 | 10 | 11 | 10 | 10 | 10 | 9 | 10 | 10 | 12 | 15 | 12 | 11 | 10 | 10 | 10 | 10 | 10 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 7 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | W 4 | W 4 | WNW 4 | SW 6 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 | NNW 5 | NNW 5 |
| kJ | 46 | 52 | 23 | 29 | 20 | 10 | 10 | 6 | 4 | 3 | 1 | 1 | 3 | 2 | 1 | 1 | 7 | 7 | 7 | 8 | 8 | 8 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | W 16 | W 15 | W 15 | W 15 | W 14 | W 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 6 | SW 6 | SW 6 | SW 13 | SW 6 | W 16 | — | W 6 | W 6 | SW 12 | SW 15 | — |
| kJ | 5 | 5 | 4 | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 7 | 7 | 1 | 1 | 1 | 7 | 1 | 5 | — | 1 | 1 | 6 | 8 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | W 13 | W 13 | SW 13 | W 16 | W 16 | W 6 | W 6 | — | — | — | W 12 | SW 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 3 | 3 | 7 | 5 | 5 | 1 | 1 | — | — | — | 3 | 8 |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 4 | NW 4 | NW 4 | NW 5 | NNW 4 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NW 5 | NW 5 | NNW 5 | NW 4 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NW 5 | NW 5 | NW 5 | NW 5 | WNW 3 | — |
| kJ | 5 | 9 | 14 | 18 | 22 | 23 | 16 | 9 | 33 | 37 | 27 | 19 | 8 | 5 | 3 | 5 | 12 | 9 | 6 | 6 | 6 | 6 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 35 | 11 | 286 | 177 | 819 | 286 | 175 | 175 | 175 | 175 | 175 | 177 | 286 | 211 | 273 | 170 | 222 | 170 | 162 | 171 | 273 | 251 | 151 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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