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Traeth Lligwy surfForecast / Wales – Anglesy / UK
12 Day Weather and Surf, issued 12 pm Thursday 18 Sep 2025 BST
Best Forecast Surf Conditions for Traeth Lligwy this week:
The surf forecast for Traeth Lligwy over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 21) at 1AM. The primary swell is predicted to be 3.5m and 8s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Traeth Lligwy in the next 12 days are 3.5m 8s and forecast to arrive on Sunday (Sep 21) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Saturday (Sep 20) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 21st Sep) | 11ft (3.5m) 8s |
| Best Surf | 1AM (Sun 21st Sep) | 11ft (3.5m) 8s |
| Most Powerful | 4AM (Sun 21st Sep) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Traeth Lligwy over the next 12 days.
Short Range Forecast Heavy rain (total 42mm), heaviest during Fri night. Very mild (max 17°C on Thu afternoon, min 10°C on Sat afternoon). Winds increasing (calm on Fri afternoon, near gales from the W by Sat afternoon). | Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 13°C on Sun night, min 11°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | — | ||||||||||||||||||||
| Period(s) (?) | 4 | 5 | 6 | 7 | 7 | 3 | 8 | 3 | 8 | 7 | 7 | 6 | 4 | 4 | 5 | 5 | 5 | 4 | 4 | 4 | - |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 13 | 1432 | 732 | 526 | 103 | 18 | 22 | 59 | 49 | 23 | 5 | 2 | 1 | 0 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | on | cross- off | cross- off | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | on | cross |
High Tide / height (m) | 9:30PM 6.03 | 10:03AM 5.93 | 10:16PM 6.46 | 10:43AM 6.27 | 10:54PM 6.79 | 11:19AM 6.53 | 11:30PM 7.01 | 11:51AM 6.70 | 12:03AM 7.09 | 12:22PM 6.76 | 12:35AM 7.03 | 12:53PM 6.70 | 1:07AM 6.84 | ||||||||
Low Tide / height (m) | 3:28PM 1.63 | 4:01AM 1.03 | 4:17PM 1.23 | 4:45AM 0.66 | 4:57PM 0.90 | 5:22AM 0.40 | 5:32PM 0.66 | 5:55AM 0.27 | 6:05PM 0.52 | 6:26AM 0.26 | 6:36PM 0.49 | 6:56AM 0.38 | 7:07PM 0.57 | ||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 6:54 | - | - | 6:56 | - | - | 6:58 | - | - | 6:58 | - | - | 7:01 | - | - | 7:03 | - | - | 7:05 | - | - |
| Sunset | - | 7:25 | - | - | 7:23 | - | - | 7:21 | - | - | 7:19 | - | - | 7:16 | - | - | 7:14 | - | - | 7:12 | - |
 |  |  | |  |  | |  | |  | |  |  | |  | | |  | | | | |
Rain (mm) | 2 | - | 4 | 4 | 8 | 15 | 3 | 3 | 3 | - | 1 | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 11 | 12 | 12 | 13 | 11 | 12 | 12 | 13 | 13 | 13 | 12 | 13 | 14 |
| Feels °C (?) | 12 | 12 | 12 | 14 | 15 | 15 | 15 | 12 | 3 | 5 | 6 | 8 | 7 | 7 | 8 | 10 | 11 | 10 | 8 | 9 | 11 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - Anglesy
Cross-off wind 14 km from Traeth Lligwy has swung offshore (fresh winds from the SSW at Mona). No surfable waves- The cross-on wind has turned onshore at Rhosneigr (fresh winds from the SSW at Valley RAF Airport 2 km from Rhosneigr). 1.1m 5s windswell from the SSW to make surfable waves.
Actual: 52 min ago
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Traeth Lligwy surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Traeth Lligwy Surf forecast
The above surf forecast table for Traeth Lligwy provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Traeth Lligwy can be found by selecting the local surf guide option on the grey menu. Our Traeth Lligwy surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Traeth Lligwy) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Traeth Lligwy may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Anglesy? If you are looking for accommodation near Traeth Lligwy, camping, hotels and holiday cottages in Anglesy, consider staying in Bangor which is 14 km (9 miles) away. Other places in and around Anglesy where you can find information about places to rent, and car hire include Anglesey which is 22 km (14 miles) away, Holyhead, Llandudno and Colwyn Bay.
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