Surf Forecasts:
How big are the waves at Llanddwyn Island today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 3ft (0.9m), 6s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 2ft (0.6m), 6s period with SW swell.
- Evening surf: Evening surf (18 Aug, local time) - 2ft (0.6m), 4s period with WSW swell.
The current surf forecast for Llanddwyn Island at 1PM is: 0.8m 4s primary swell from a West-southwest direction and 0.1m 16s secondary swell from a West direction (forecast issued at 06:00am August 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 3ft (0.9m) | 6s |
| Afternoon (18 Aug) | 2ft (0.6m) | 6s |
| Evening (18 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Thu morning. Very mild (max 17°C on Tue morning, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||||||
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 5 | SW 5 | WSW 6 | WSW 4 | SW 6 | SW 6 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SW 4 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 14 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 36 | 30 | 68 | 26 | 27 | 16 | 11 | 22 | 28 | 29 | 20 | 20 | 17 | 55 | 59 | 47 | 46 | 30 | 26 | 18 | 10 | 8 | 8 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | on | on | on | on | cross-on | on | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 1:44PM3.51m | 2:05AM3.58m | 2:29PM3.25m | 2:56AM3.21m | 3:26PM3.00m | ||||||||||||||||||
Low Tide | 8:13AM0.53m | 8:25PM0.77m | 8:54AM0.92m | 9:10PM1.10m | 9:40AM1.27m | ||||||||||||||||||
 |  |  | | | |  | |  | |  |  | | | | | |  | | | | |  | |
 | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:38 | — | — | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:35 | — |
mm | — | — | — | — | — | — | 1 | 1 | 1 | — | — | 1 | — | — | 1 | 1 | 1 | 2 | 3 | 1 | — | — | — |
Temp °C | 18 | 16 | 16 | 17 | 17 | 17 | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 16 | 16 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 14 |
Feels °C | 17 | 14 | 13 | 13 | 14 | 15 | 12 | 11 | 11 | 11 | 11 | 12 | 13 | 12 | 14 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | — | SW 5 | W 16 | W 16 | NW 4 | NW 4 | — | — | W 17 | W 17 | W 16 | W 16 | — | — | W 16 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | WSW 6 |
| kJ | — | 30 | 5 | 5 | 7 | 3 | — | — | 6 | 6 | 5 | 5 | — | — | 5 | 47 | 46 | 30 | 26 | 18 | 10 | 7 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 16 | W 16 | — | — | — | W 17 | — | — | — | — | — | W 16 | W 15 | SW 15 | W 15 | W 14 | W 14 | SW 14 | SW 14 |
| kJ | — | — | — | — | 5 | 5 | — | — | — | 6 | — | — | — | — | — | 5 | 5 | 9 | 4 | 4 | 4 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | NW 4 | WSW 6 | WSW 4 | SW 6 | SW 6 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SW 4 | SW 5 | SW 6 | — | WNW 4 | WNW 4 | WNW 5 | NW 5 | NNW 4 | N 4 | NNW 4 |
| kJ | 36 | 3 | 68 | 26 | 27 | 16 | 11 | 22 | 28 | 29 | 20 | 20 | 17 | 55 | 59 | — | 5 | 12 | 19 | 31 | 28 | 10 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 167 | 164 | 35 | 385 | 385 | 385 | 272 | 175 | 175 | 175 | 175 | 272 | 267 | 269 | 255 | 35 | 159 | 164 | 164 | 164 | 164 | 175 | 162 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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