Surf Forecasts:
How big are the waves at Trearddur Bay (Holy Island) today (10 Aug):
- Morning surf: Morning surf (10 Aug, local time) - 1.5ft (0.4m), 5s period with SW swell.
- Afternoon surf: Afternoon surf (10 Aug, local time) - 1ft (0.3m), 6s period with SW swell.
- Evening surf: Evening surf (10 Aug, local time) - 0.5ft (0.2m), 6s period with SSW swell.
The current surf forecast for Trearddur Bay (Holy Island) at 1AM is: 0.4m 4s primary swell from a South-southwest direction and 0.1m 12s secondary swell from a Southwest direction (forecast issued at 06:00pm August 09). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Aug) | 1.5ft (0.4m) | 5s |
| Afternoon (10 Aug) | 1ft (0.3m) | 6s |
| Evening (10 Aug) | 0.5ft (0.2m) | 6s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 22°C on Wed morning, min 13°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | |||||||||||||||||
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 12 | SW 12 | SSW 4 | SSW 4 | SW 4 | SW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | S 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 6 | 6 | 6 | 7 | 5 | 5 | 8 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 5 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-on | on | on | cross-on | cross-on |
High Tide | 8:27PM4.80m | 9:03AM4.91m | 9:30PM5.16m | 10:01AM5.19m | |||||||||||||||
Low Tide | 1:59PM1.77m | 2:41AM1.51m | 3:06PM1.52m | 3:41AM1.10m | 4:01PM1.21m | ||||||||||||||
 |  |  |  |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — |
 | — | 8:59 | — | — | — | — | — | — | — | 8:57 | — | — | — | — | — | — | — | 8:54 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 14 | 14 | 14 | 13 | 14 | 14 | 15 | 16 | 15 | 15 | 16 | 16 | 18 | 20 | 21 | 21 | 21 |
Feels °C | 16 | 15 | 10 | 11 | 11 | 10 | 12 | 11 | 12 | 13 | 12 | 11 | 12 | 13 | 16 | 17 | 18 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | — | SW 6 | SSW 4 | SSW 4 | SW 4 | SW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | — | 1 | 6 | 7 | 5 | 5 | 8 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 6 | SW 12 | S 10 | S 10 | S 8 | — | — | SW 7 | N 4 | — | — | — | — | — | — | — | S 11 |
| kJ | 6 | 6 | 1 | 6 | 2 | 2 | 1 | — | — | 2 | 1 | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 12 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 11 |
| kJ | — | — | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | SSW 3 | SSW 3 | — | N 3 | NNW 3 | N 3 | NNW 4 | NNW 4 | N 4 | N 4 | — | ENE 2 | ENE 2 | — | SSE 3 | — | — | SSW 2 | SSW 3 |
| kJ | 4 | 5 | — | 3 | 3 | 4 | 5 | 5 | 3 | 1 | — | 1 | 1 | — | 1 | — | — | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1149 | 1085 | 278 | 251 | 251 | 250 | 251 | 285 | 276 | 275 | 246 | 246 | 280 | 280 | 284 | 297 | 306 | 285 | 285 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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