Surf Forecasts:
How big are the waves at Trearddur Bay (Holy Island) today (31 Jul):
- Afternoon surf: Afternoon surf (31 Jul, local time) - 1.5ft (0.5m), 3s period with SW swell.
- Evening surf: Evening surf (31 Jul, local time) - 2.5ft (0.8m), 5s period with SW swell.
The current surf forecast for Trearddur Bay (Holy Island) at 10PM is: 1.0m 5s primary swell from a Southwest direction and 0.8m 5s secondary swell from a Southwest direction (forecast issued at 06:00pm July 31). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | - | - |
| Afternoon (31 Jul) | 1.5ft (0.5m) | 3s |
| Evening (31 Jul) | 2.5ft (0.8m) | 5s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | |||||||||||||||||
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 3 | SW 4 | SW 5 | SW 5 | SSW 5 | SW 5 | SW 5 | W 4 | SW 5 | SW 3 | SW 4 | SW 4 | SW 4 | SSW 4 | SSW 4 | W 9 | SW 9 | SW 9 | SW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 4 | 15 | 48 | 25 | 15 | 11 | 7 | 6 | 3 | 2 | 4 | 4 | 4 | 1 | 3 | 1 | 3 | 3 | 4 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-on | cross-off | off | off |
High Tide | 00:36AM5.52m | 12:58PM5.13m | 1:09AM5.52m | 1:32PM5.12m | |||||||||||||||
Low Tide | 6:23PM1.15m | 6:46AM0.92m | 6:56PM1.12m | 7:20AM0.89m | 7:31PM1.14m | ||||||||||||||
 | |  |  | | | | |  | |  | | | | |  | | | | |
 | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | 9:15 | — | — | — | — | — | — | — | 9:14 | — | — | — | — | — | — | — | 9:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 15 | 14 | 13 | 13 | 13 | 15 | 15 | 15 | 15 | 15 | 14 | 16 | 17 | 18 | 17 | 16 |
Feels °C | 11 | 12 | 14 | 11 | 10 | 10 | 9 | 10 | 11 | 12 | 12 | 12 | 13 | 12 | 14 | 15 | 15 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 3 | — | SW 5 | SW 5 | SSW 5 | SW 5 | SW 5 | NW 4 | NW 3 | — | — | — | SW 4 | SSW 4 | SSW 4 | — | — | SW 9 | SW 8 |
| kJ | 1 | — | 26 | 25 | 15 | 11 | 6 | 5 | 2 | — | — | — | 4 | 1 | 1 | — | — | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 9 | W 9 | — | — | — | — | SW 8 | W 9 | SW 9 | — | SW 10 |
| kJ | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | 3 | 1 | 3 | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 4 | SW 5 | WNW 3 | WNW 4 | WNW 4 | NW 4 | W 4 | SW 5 | SW 3 | SW 4 | SW 4 | — | — | — | — | — | NNE 3 | NNE 3 |
| kJ | 4 | 15 | 48 | 4 | 9 | 10 | 7 | 6 | 3 | 2 | 4 | 4 | — | — | — | — | — | 2 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 596 | 635 | 210 | 292 | 322 | 187 | 358 | 358 | 358 | 323 | 278 | 278 | 246 | 246 | 246 | 246 | 246 | 187 | 179 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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