Surf Forecasts:
How big are the waves at Llanddwyn Island today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.7m), 5s period with NW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.4m), 4s period with NW swell.
- Evening surf: Evening surf (21 Aug, local time) - 0.5ft (0.1m), 13s period with SW swell.
The current surf forecast for Llanddwyn Island at 6AM is: 0.1m 14s primary swell from a Southwest direction and 0.2m 6s secondary swell from a West-southwest direction (forecast issued at 12:00am August 21). An open ocean swell of 0.6m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2.5ft (0.7m) | 5s |
| Afternoon (21 Aug) | 1.5ft (0.4m) | 4s |
| Evening (21 Aug) | 0.5ft (0.1m) | 13s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 17°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||||
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 14 | SW 14 | SW 14 | NW 5 | NW 5 | NW 4 | SW 13 | W 16 | W 16 | W 16 | SW 13 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 8 | 8 | 7 | 22 | 11 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross | cross-off | cross-off | off |
High Tide | 4:05AM2.90m | 4:46PM2.83m | 5:38AM2.76m | 6:19PM2.84m | 7:04AM2.82m | 7:32PM3.02m | ||||||||||||||||||
Low Tide | 10:08PM1.38m | 10:45AM1.54m | 11:34PM1.55m | 12:20PM1.61m | 1:12AM1.48m | 1:41PM1.46m | ||||||||||||||||||
 |  |  | |  | |  |  | | | | | | | | | | | | | | | | | |
 | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:28 | — |
mm | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 13 | 14 | 15 | 17 | 16 | 14 | 13 | 12 | 12 | 13 | 14 | 15 | 15 | 14 | 14 | 13 | 13 | 14 | 16 | 16 | 16 | 15 |
Feels °C | 10 | 9 | 10 | 11 | 13 | 14 | 12 | 12 | 11 | 10 | 10 | 10 | 10 | 11 | 12 | 12 | 13 | 11 | 12 | 13 | 14 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 6 | SW 6 | SW 6 | NW 5 | NW 4 | W 4 | SW 5 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 | SW 15 | NNW 5 | NNW 4 | NNW 4 | NW 4 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
| kJ | 3 | 3 | 1 | 1 | 11 | 7 | 1 | 1 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | 1 | 8 | 7 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 13 | W 4 | SW 6 | SW 6 | SW 13 | SW 5 | W 5 | — | — | W 6 | SW 12 | W 12 | SW 15 | SW 15 | SW 15 | SW 14 | — | — | — | — | — |
| kJ | 8 | 8 | 7 | 7 | 3 | 1 | 1 | 7 | 1 | 1 | — | — | 1 | 6 | 3 | 8 | 8 | 8 | 8 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SW 14 | — | W 14 | SW 6 | W 13 | SW 13 | W 16 | W 16 | W 16 | W 6 | W 6 | — | W 6 | — | W 12 | W 12 | W 12 | — | — | — | — | — | — |
| kJ | — | 8 | — | 4 | 1 | 3 | 7 | 5 | 5 | 5 | 1 | 1 | — | 1 | — | 3 | 3 | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | NW 5 | NW 5 | — | — | NNW 4 | NNW 4 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 5 | NW 5 | NW 3 | NW 3 | NNW 5 | — | — | — | NW 4 | — | — | — |
| kJ | 9 | 17 | 19 | 22 | — | — | 6 | 4 | 3 | 9 | 6 | 6 | 6 | 10 | 5 | 2 | 7 | — | — | — | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 175 | 162 | 162 | 175 | 330 | 286 | 211 | 162 | 222 | 222 | 170 | 170 | 211 | 286 | 289 | 211 | 170 | 170 | 211 | 168 | 151 | 309 | 289 | 178 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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