Surf Forecasts:
How big are the waves at Trearddur Bay (Holy Island) today (19 Sep):
- Morning surf: Morning surf (19 Sep, local time) - 7ft (2.1m), 7s period with SW swell.
- Afternoon surf: Afternoon surf (19 Sep, local time) - 5ft (1.6m), 7s period with SW swell.
- Evening surf: Evening surf (19 Sep, local time) - 4.5ft (1.4m), 4s period with WSW swell.
The current surf forecast for Trearddur Bay (Holy Island) at 1AM is: 2.5m 7s primary swell from a Southwest direction (forecast issued at 06:00pm September 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 7ft (2.1m) | 7s |
| Afternoon (19 Sep) | 5ft (1.6m) | 7s |
| Evening (19 Sep) | 4.5ft (1.4m) | 4s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Fri afternoon. Very mild (max 17°C on Sat afternoon, min 12°C on Sat night). Winds decreasing (near gales from the SW on Fri afternoon, light winds from the SSW by Sun afternoon). | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 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 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 4 | W 5 | W 5 | WNW 5 | NW 5 | NW 5 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 742 | 629 | 543 | 662 | 662 | 589 | 440 | 301 | 200 | 149 | 77 | 112 | 119 | 80 | 60 | 42 | 18 | 9 | 16 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 3:35PM4.56m | 4:07AM4.26m | 4:41PM4.33m | 5:37AM4.04m | 6:15PM4.27m | ||||||||||||||
Low Tide | 9:53PM2.22m | 10:24AM2.47m | 11:11PM2.48m | 11:54AM2.66m | |||||||||||||||
 |  |  |  | | |  |  | | |  | | | | | | | | | |
 | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — |
 | — | 7:28 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — | — | 7:22 | — |
mm | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 13 | 13 | 13 | 13 |
Feels °C | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 10 | 9 | 7 | 6 | 6 | 7 | 8 | 10 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | SW 6 | SW 6 | SW 6 | SW 6 | NW 4 | WNW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 38 | 30 | 18 | 18 | 8 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | S 14 | S 14 | NNW 5 | NNW 5 | NNW 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 | 5 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | S 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — |
Wind waves Height (m) Direction Period (s) | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 4 | W 5 | W 5 | WNW 5 | NW 5 | NW 5 | WNW 4 | SW 6 | SW 6 |
| kJ | 742 | 629 | 543 | 662 | 662 | 589 | 440 | 301 | 200 | 149 | 77 | 112 | 119 | 80 | 60 | 42 | 13 | 9 | 16 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 556 | 376 | 251 | 514 | 514 | 503 | 575 | 556 | 556 | 280 | 280 | 222 | 174 | 187 | 182 | 192 | 192 | 163 | 179 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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