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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 5 am Saturday 21 Feb 2026 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
7.4° 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 1PM is: 1.6m 7s primary swell from a Southwest direction (forecast issued at 05:00am February 21). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Feb) | 4.5ft (1.4m) | 7s |
| Afternoon (21 Feb) | 6ft (1.9m) | 6s |
| Evening (21 Feb) | 7ft (2.1m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 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 | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 7 | 7 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 209 | 268 | 168 | 187 | 284 | 432 | 444 | 375 | 313 | 229 | 235 | 196 | 172 | 236 | 279 | 305 | 332 | 332 | 286 | 296 | 213 | 299 | 308 | 316 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on |
High Tide / height (m) | 11:27AM 4.33 | 11:49PM 3.89 | 12:06PM 4.13 | 12:30AM 3.72 | 12:52PM 3.84 | |||||||||||||||||||
Low Tide / height (m) | 6:27PM 0.11 | 6:40AM 0.39 | 7:09PM 0.38 | 7:25AM 0.63 | 7:57PM 0.71 | |||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | - | - | 7:22 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:18 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:40 | - | - | - | - | - | - | - | 5:43 | - | - | - |
 |  |  |  |  | | | | | | |  | |  | |  | | | |  | | | | | |
Rain (mm) | 2 | - | - | - | 6 | 3 | - | 1 | - | - | - | - | - | 1 | 1 | - | - | - | - | 1 | 2 | 1 | 1 | - |
| Temp. °C | 10 | 9 | 8 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 10 | 10 | 10 |
| Feels °C (?) | 4 | 3 | 3 | 5 | 2 | 4 | 4 | 4 | 5 | 6 | 4 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 4 | 4 | 4 | 4 | 3 |
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