Surf Forecasts:
How big are the waves at Llanddwyn Island today (19 Aug):
- Morning surf: Morning surf (19 Aug, local time) - 2.5ft (0.8m), 4s period with WSW swell.
- Afternoon surf: Afternoon surf (19 Aug, local time) - 2.5ft (0.7m), 4s period with SW swell.
- Evening surf: Evening surf (19 Aug, local time) - 3.5ft (1.1m), 5s period with SW swell.
The current surf forecast for Llanddwyn Island at 1AM is: 0.7m 4s primary swell from a West-southwest direction and 0.1m 17s secondary swell from a West direction (forecast issued at 06:00pm August 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | 2.5ft (0.8m) | 4s |
| Afternoon (19 Aug) | 2.5ft (0.7m) | 4s |
| Evening (19 Aug) | 3.5ft (1.1m) | 5s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 18mm), heaviest on Tue night. Very mild (max 18°C on Tue afternoon, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||
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 6 | SW 6 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SW 4 | SW 5 | SW 5 | WSW 5 | SW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 28 | 16 | 15 | 11 | 18 | 20 | 14 | 14 | 16 | 53 | 57 | 61 | 28 | 21 | 18 | 19 | 10 | 10 | 8 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | 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 | 8:25PM0.77m | 8:54AM0.92m | 9:10PM1.10m | 9:40AM1.27m | |||||||||||||||
 | |  | |  |  | |  | |  | | | | |  | | |  |  | |
 | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | 8:38 | — | — | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:35 | — |
mm | — | — | 1 | 2 | 1 | 1 | 2 | — | — | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | — | — |
Temp °C | 18 | 17 | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 16 | 15 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 14 |
Feels °C | 16 | 15 | 12 | 11 | 12 | 13 | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 12 | 12 | 11 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 4 | SW 6 | SW 6 | W 17 | W 17 | W 17 | SW 6 | W 16 | WNW 4 | — | W 16 | W 16 | SW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | 4 | 16 | 15 | 6 | 6 | 6 | 5 | 5 | 1 | — | 5 | 5 | 28 | 21 | 18 | 19 | 10 | 10 | 6 |
Swell 2 Height (m) Direction Period (s) | W 16 | NW 4 | — | — | — | W 17 | W 16 | — | — | — | — | — | W 15 | W 15 | W 15 | W 14 | W 14 | SW 14 | SW 14 |
| kJ | 5 | 3 | — | — | — | 6 | 5 | — | — | — | — | — | 5 | 4 | 4 | 4 | 4 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | W 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | — | WNW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SW 4 | SW 5 | SW 5 | WSW 5 | WNW 4 | NW 4 | NW 4 | NNW 5 | NNW 4 | NNW 4 | NNW 4 |
| kJ | 28 | — | 1 | 11 | 18 | 20 | 14 | 14 | 16 | 53 | 57 | 61 | 6 | 14 | 16 | 19 | 13 | 10 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 385 | 342 | 272 | 168 | 164 | 175 | 267 | 267 | 269 | 269 | 255 | 272 | 35 | 159 | 159 | 164 | 164 | 175 | 99 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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