Surf Forecasts:
How big are the waves at Trearddur Bay (Holy Island) today (23 Sep):
- Morning surf: Morning surf (23 Sep, local time) - 0.5ft (0.1m), 15s period with SW swell.
- Afternoon surf: Afternoon surf (23 Sep, local time) - 0.5ft (0.1m), 12s period with SW swell.
- Evening surf: Evening surf (23 Sep, local time) - 0.5ft (0.2m), 3s period with WNW swell.
The current surf forecast for Trearddur Bay (Holy Island) at 1PM is: 0.1m 12s primary swell from a Southwest direction and 0.3m 4s secondary swell from a Southwest direction (forecast issued at 06:00am September 23). An open ocean swell of 0.9m 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 (23 Sep) | 0.5ft (0.1m) | 15s |
| Afternoon (23 Sep) | 0.5ft (0.1m) | 12s |
| Evening (23 Sep) | 0.5ft (0.2m) | 3s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 16°C on Thu afternoon, min 10°C on Fri night). Winds increasing (light winds from the ENE on Wed night, fresh winds from the S by Thu morning). | |||||||||||||||||||||||
Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||||||||
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 4 | WSW 4 | SW 15 | W 15 | SW 12 | WNW 4 | WNW 3 | SW 4 | SW 4 | SSE 3 | S 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 5 | SW 4 | SW 4 | SW 4 | SW 16 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 10 | 9 | 8 | 6 | 6 | 3 | 1 | 1 | 1 | 1 | 18 | 66 | 67 | 55 | 46 | 37 | 31 | 20 | 10 | 10 | 10 | 10 | 9 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:21AM4.69m | 9:25PM5.08m | 9:54AM4.96m | 9:59PM5.36m | 10:24AM5.19m | ||||||||||||||||||
Low Tide | 3:02AM1.80m | 3:15PM1.89m | 3:38AM1.45m | 3:49PM1.55m | 4:10AM1.13m | 4:20PM1.24m | |||||||||||||||||
 |  |  |  | | | | | | | | | | |  | | |  |  | | | | | |
 | — | 7:03 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — |
 | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:10 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 1 | 1 |
Temp °C | 17 | 15 | 13 | 13 | 14 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 15 | 16 | 15 | 15 | 16 | 13 | 12 | 12 | 11 | 11 | 10 |
Feels °C | 13 | 12 | 7 | 8 | 11 | 11 | 12 | 11 | 9 | 7 | 7 | 7 | 9 | 11 | 10 | 11 | 13 | 9 | 9 | 9 | 7 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 4 | SW 4 | SSW 4 | N 5 | N 4 | NNW 4 | N 4 | N 4 | — | — | — | — | — | — | W 19 | SW 4 | SW 4 | SW 4 | SSW 4 | SW 4 | SW 4 |
| kJ | 10 | 9 | 2 | 3 | 2 | 17 | 6 | 6 | 3 | 1 | — | — | — | — | — | — | 7 | 20 | 9 | 4 | 2 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 15 | SW 12 | SW 12 | WNW 4 | WNW 3 | SW 4 | SW 4 | — | — | — | — | — | — | — | — | SW 18 | SW 16 | NW 3 | SW 16 | SW 16 | — |
| kJ | 6 | 6 | 8 | 6 | 6 | 3 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | 12 | 10 | 1 | 10 | 10 | — |
Swell 3 Height (m) Direction Period (s) | — | — | SW 12 | W 15 | S 12 | SW 4 | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | — | W 9 | SW 15 |
| kJ | — | — | 6 | 4 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | 2 | 9 |
Wind waves Height (m) Direction Period (s) | SW 4 | WSW 4 | NNW 4 | NNW 5 | NNW 5 | — | — | — | — | SSE 3 | S 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 5 | — | NW 3 | NW 3 | — | — | NNW 2 |
| kJ | 8 | 8 | 20 | 33 | 33 | — | — | — | — | 1 | 18 | 66 | 67 | 55 | 46 | 37 | 31 | — | 1 | 2 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 179 | 278 | 179 | 192 | 192 | 161 | 161 | 163 | 186 | 186 | 235 | 189 | 189 | 235 | 270 | 238 | 88 | 55 | 163 | 163 | 174 | 195 | 246 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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