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Llanddwyn Island Surf Forecast
/ Wales – Anglesy (10 surf breaks) /
Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 6 am Monday 30 Mar 2026 BSTForecast 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
8.7° C
(Which is slightly warmer than usual)How big are the waves at Llanddwyn Island today?
The current surf forecast for Llanddwyn Island at 12PM is: 1.2m 6s primary swell from a Northwest direction and 0.6m 6s secondary swell from a Southwest direction, 0.1m 17s secondary swell from a West direction (forecast issued at 06:00am March 30). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Mar) | 4.5ft (1.3m) | 6s |
| Afternoon (30 Mar) | 3.5ft (1.0m) | 5s |
| Evening (30 Mar) | 1.5ft (0.5m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 30 | Tuesday 31 | Wednesday 01 | Thu 02 | |||||||||||||||||||||
| 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 | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 6 | 5 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 160 | 153 | 112 | 81 | 46 | 22 | 21 | 20 | 14 | 6 | 5 | 5 | 7 | 4 | 3 | 5 | 8 | 10 | 10 | 13 | 13 | 29 | 35 | 31 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross- on | cross | cross | cross- on | on | on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- off |
High Tide / height (m) | 8:29AM 3.81 | 9:04PM 3.61 | 9:08AM 4.04 | 9:36PM 3.80 | 9:43AM 4.19 | 10:07PM 3.94 | ||||||||||||||||||
Low Tide / height (m) | 2:43AM 0.68 | 3:14PM 0.20 | 3:28AM 0.42 | 3:55PM 0.01 | 4:08AM 0.24 | 4:32PM -0.07 | ||||||||||||||||||
Monday 30 | Tuesday 31 | Wednesday 01 | Thu 02 | |||||||||||||||||||||
| Sunrise | - | 6:56 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:49 | - | - | - | - | - | - | - | 7:51 | - | - |
 |  |  |  | | |  | | | | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 12 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 10 | 10 | 5 |
| Feels °C (?) | 1 | 0 | 1 | 1 | 3 | 4 | 6 | 6 | 8 | 8 | 10 | 11 | 10 | 9 | 9 | 9 | 8 | 7 | 6 | 6 | 6 | 5 | 6 | 0 |
- 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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