Surf Forecasts:
How big are the waves at Trearddur Bay (Holy Island) today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 2ft (0.6m), 6s period with S swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 1.5ft (0.5m), 5s period with S swell.
- Evening surf: Evening surf (20 Oct, local time) - 2ft (0.6m), 4s period with S swell.
The current surf forecast for Trearddur Bay (Holy Island) at 4PM is: 0.5m 5s primary swell from a South direction and 0.1m 8s secondary swell from a West direction, 0.2m 2s secondary swell from a South-southeast direction (forecast issued at 12:00pm October 20). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 2ft (0.6m) | 6s |
| Afternoon (20 Oct) | 1.5ft (0.5m) | 5s |
| Evening (20 Oct) | 2ft (0.6m) | 4s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 19mm), heaviest on Wed afternoon. Very mild (max 13°C on Thu night, min 9°C on Tue afternoon). Winds increasing (light winds from the SE on Tue morning, gales from the NW by Wed morning). | |||||||||||||||||||||
Tue 20 | Wednesday 21 | Thursday 22 | |||||||||||||||||||
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) | SSW 6 | S 6 | S 5 | SSW 4 | S 4 | S 5 | S 6 | SSW 6 | SW 11 | W 7 | WNW 8 | WNW 7 | WNW 6 | W 5 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | SW 8 | SSW 8 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 28 | 17 | 12 | 8 | 13 | 34 | 89 | 147 | 762 | 978 | 1276 | 530 | 184 | 39 | 37 | 54 | 67 | 64 | 95 | 84 | 67 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off |
High Tide | 6:46PM4.48m | 7:48AM4.35m | 7:52PM4.73m | 8:36AM4.65m | 8:39PM5.03m | ||||||||||||||||
Low Tide | 12:32PM2.63m | 1:20AM2.18m | 1:42PM2.36m | 2:14AM1.84m | 2:30PM2.01m | ||||||||||||||||
 | |  |  |  |  |  | |  | | | | | | | |  | |  | | | |
 | 7:52 | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:56 | — | — | — | — | — |
 | — | — | 6:12 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:07 | — | — |
mm | — | — | 1 | 1 | — | — | — | 1 | 1 | 1 | 5 | 1 | — | 1 | — | — | — | — | — | — | 1 |
Temp °C | 11 | 10 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 9 | 9 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 12 | 11 | 11 |
Feels °C | 8 | 7 | 6 | 6 | 7 | 6 | 5 | 5 | 6 | -6 | -3 | 1 | 3 | 4 | 4 | 4 | 4 | 6 | 8 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | S 6 | S 5 | SSW 4 | W 8 | SW 5 | SSW 6 | SSW 6 | SSW 7 | — | SW 9 | SW 9 | SW 7 | NNW 6 | NNW 5 | SW 7 | SW 8 | N 5 | WNW 4 | SSW 8 | SW 8 |
| kJ | 28 | 17 | 12 | 8 | 1 | 14 | 88 | 147 | 105 | — | 118 | 47 | 31 | 51 | 23 | 25 | 32 | 2 | 6 | 84 | 67 |
Swell 2 Height (m) Direction Period (s) | — | — | W 8 | — | W 8 | — | — | SW 14 | SW 11 | — | — | — | — | SW 6 | — | NNW 5 | NNW 5 | N 5 | — | WNW 4 | — |
| kJ | — | — | 1 | — | 1 | — | — | 8 | 112 | — | — | — | — | 39 | — | 9 | 5 | 2 | — | 1 | — |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | W 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 4 | — | SSE 2 | SE 2 | S 4 | S 5 | S 6 | — | SW 11 | W 7 | WNW 8 | WNW 7 | WNW 6 | W 5 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | SW 8 | — | ESE 3 |
| kJ | 9 | — | 1 | 1 | 13 | 34 | 89 | — | 762 | 978 | 1276 | 530 | 184 | 36 | 37 | 54 | 67 | 64 | 95 | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 179 | 179 | 186 | 206 | 246 | 246 | 246 | 235 | 235 | 284 | 273 | 273 | 278 | 51 | 174 | 174 | 174 | 251 | 59 | 59 | 246 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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