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Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 5 pm Sunday 07 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Llanddwyn Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llanddwyn Island sea temperature is
10.5° C
(Which is normal for this time of year)How big are the waves at Llanddwyn Island today?
The current surf forecast for Llanddwyn Island at 10PM is: 1.8m 10s primary swell from a Southwest direction and 0.6m 5s secondary swell from a West-northwest direction (forecast issued at 05:00pm December 07). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Dec) | - | - |
| Afternoon (07 Dec) | 7ft (2.1m) | 7s |
| Evening (07 Dec) | 5.5ft (1.7m) | 10s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 6 | 10 | 10 | 7 | 8 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 8 | 10 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 371 | 312 | 569 | 804 | 478 | 735 | 990 | 996 | 844 | 850 | 677 | 469 | 284 | 811 | 2401 | 3518 | 4054 | 3090 | 2366 | 2078 | 2522 | 1762 | 1264 | 1158 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 10:53PM 3.95 | 11:10AM 4.23 | 11:46PM 3.69 | 12:02PM 4.06 | 12:44AM 3.41 | |||||||||||||||||||
Low Tide / height (m) | 5:26PM -0.17 | 5:44AM 0.27 | 6:17PM -0.01 | 6:32AM 0.49 | 7:10PM 0.22 | 7:23AM 0.74 | ||||||||||||||||||
Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:18 | - | - | - | - | - | - | - | 8:18 | - |
| Sunset | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - |
 |  |  |  |  |  |  | | | | | |  |  |  | | | | | | |  |  |  | |
Rain (mm) | 4 | 1 | - | - | 2 | - | - | 1 | 1 | 1 | 1 | - | 7 | 11 | 6 | 4 | 2 | - | - | - | 1 | 1 | 1 | - |
| Temp. °C | 12 | 11 | 10 | 11 | 12 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 12 | 13 | 14 | 14 | 13 | 12 | 11 | 11 | 11 | 11 | 11 | 10 |
| Feels °C (?) | 5 | 4 | 5 | 4 | 4 | 3 | 5 | 4 | 6 | 7 | 8 | 7 | 6 | 4 | 4 | 3 | 5 | 5 | 4 | 3 | 3 | 3 | 4 | 3 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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