Surf Forecasts:
How big are the waves at Trearddur Bay (Holy 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 (0.8m), 4s period with SSW swell.
- Evening surf: Evening surf (19 Aug, local time) - 3.5ft (1.1m), 5s period with SW swell.
The current surf forecast for Trearddur Bay (Holy Island) at 4AM is: 0.9m 4s primary swell from a West-southwest direction and 0.1m 17s secondary swell from a South direction (forecast issued at 12:00am August 19). 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 (0.8m) | 4s |
| Evening (19 Aug) | 3.5ft (1.1m) | 5s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 17mm), heaviest on Wed night. Very mild (max 16°C on Wed afternoon, min 13°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||||||||||
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) | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SSW 4 | SW 5 | SW 5 | SW 5 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | SW 6 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | W 3 | SW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 18 | 23 | 31 | 24 | 16 | 18 | 61 | 71 | 42 | 34 | 23 | 21 | 15 | 11 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 1 | 7 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:07AM4.98m | 3:32PM4.68m | 3:52AM4.62m | 4:23PM4.44m | 4:52AM4.29m | 5:32PM4.26m | ||||||||||||||||||
Low Tide | 9:26AM1.59m | 9:39PM1.83m | 10:14AM1.98m | 10:37PM2.18m | 11:17AM2.31m | |||||||||||||||||||
 |  |  |  |  | | | | | |  | |  |  | |  |  |  | | | | | | | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:36 | — | — | — | — | — | — | — | 8:34 | — |
mm | 2 | 1 | 1 | 1 | — | — | 1 | 1 | 1 | 2 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 14 | 14 | 15 | 14 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 14 |
Feels °C | 10 | 12 | 12 | 11 | 11 | 11 | 11 | 14 | 11 | 9 | 10 | 10 | 8 | 9 | 10 | 10 | 8 | 9 | 10 | 8 | 10 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | — | S 17 | SW 17 | SW 16 | SW 16 | NW 4 | SW 15 | SW 16 | SW 5 | SW 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 6 | SW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SW 5 | NNW 4 | NNW 4 | SW 13 |
| kJ | — | 6 | 11 | 10 | 10 | 2 | 9 | 10 | 42 | 34 | 23 | 21 | 15 | 11 | 6 | 6 | 4 | 3 | 1 | 1 | 1 | 12 | 3 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 16 | S 15 | — | — | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 5 | W 3 | SW 5 |
| kJ | — | — | — | 10 | 10 | 5 | — | — | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 15 | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SSW 4 | SW 5 | SW 5 | WNW 4 | WNW 4 | NW 4 | NNW 4 | N 5 | N 5 | N 5 | N 5 | N 5 | NNW 5 | NNW 5 | NNW 5 | NW 5 | WNW 4 | — | N 4 |
| kJ | 18 | 23 | 31 | 24 | 16 | 18 | 61 | 71 | 11 | 21 | 18 | 43 | 74 | 51 | 35 | 34 | 53 | 43 | 34 | 25 | 22 | 3 | — | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 178 | 179 | 192 | 246 | 246 | 246 | 249 | 88 | 174 | 51 | 179 | 179 | 219 | 192 | 193 | 192 | 179 | 179 | 179 | 179 | 182 | 179 | 284 | 273 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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