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Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 11 am Saturday 06 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
10.7° 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 6PM is: 2.5m 7s primary swell from a West-southwest direction (forecast issued at 11:00am December 06). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | 10ft (3.0m) | 11s |
| Afternoon (06 Dec) | 8ft (2.5m) | 8s |
| Evening (06 Dec) | 7.5ft (2.3m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| 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 | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 16 | 8 | 7 | 7 | 10 | 10 | 10 | 10 | 10 | 7 | 6 | 10 | 11 | 7 | 8 | 10 | 11 | 11 | 11 | 11 | 17 | 17 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1933 | 3881 | 794 | 625 | 491 | 711 | 348 | 298 | 213 | 94 | 279 | 238 | 541 | 928 | 524 | 636 | 990 | 881 | 884 | 716 | 200 | 193 | 157 | 2061 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | on | on | on | cross- on | cross | cross | cross- on | cross- on | on | on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross | cross- on | cross- on |
High Tide / height (m) | 9:33AM 4.35 | 10:03PM 4.14 | 10:20AM 4.33 | 10:53PM 3.95 | 11:10AM 4.23 | 11:46PM 3.69 | ||||||||||||||||||
Low Tide / height (m) | 4:36PM -0.21 | 4:56AM 0.10 | 5:26PM -0.17 | 5:44AM 0.27 | 6:17PM -0.01 | |||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| Sunrise | 8:14 | - | - | - | - | - | - | - | 8:15 | - | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - |
 | | |  |  |  | | |  | | |  | | | | |  | | | | | | |  | |
Rain (mm) | 3 | 1 | 2 | 1 | - | - | - | - | - | 4 | 2 | - | - | 1 | 1 | - | - | - | 1 | - | - | - | 5 | 10 |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 11 | 12 | 12 | 10 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 13 |
| Feels °C (?) | 4 | 4 | 3 | 3 | 4 | 4 | 7 | 6 | 7 | 6 | 6 | 4 | 4 | 4 | 3 | 3 | 5 | 5 | 5 | 6 | 5 | 6 | 6 | 5 |
- 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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