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Trefor Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Trefor surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 6 am Friday 09 May 2025 BST
Best Forecast Surf Conditions for Trefor this week:
The most powerful waves expected at Trefor in the next 12 days are 0.4m 7s and forecast to arrive on Wednesday (May 14) at 1PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (May 11) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 14th May) | 1.5ft (0.4m) 7s |
Table - best surf conditions forecast for Trefor over the next 12 days.
Friday 09 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | 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) (?) | 2 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 7 | 6 | 8 | 8 | 7 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 0 | 5 | 5 | 4 | 4 | 4 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 16 | 6 | 7 | 6 | 4 | 1 | 2 | 6 | 28 | 31 | 19 | 20 | 12 | 10 | 10 | 10 | 10 | 6 | 3 | 2 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- off | glass | cross- on | cross- off | glass | cross- on | cross- off | glass | glass | cross- off | glass | glass | cross- off | glass | glass | cross- off | glass | cross- on | cross- off | glass | cross- on | cross | glass | glass | cross- off | cross- on | cross- on | cross- off | glass | cross- on | glass | cross- off | cross- off | off |
High Tide / height (m) | 7:58PM 3.15 | 8:07AM 3.37 | 8:30PM 3.32 | 8:42AM 3.45 | 9:01PM 3.45 | 9:15AM 3.49 | 9:32PM 3.52 | 9:48AM 3.49 | 10:03PM 3.55 | 10:20AM 3.43 | 10:34PM 3.52 | 10:52AM 3.32 | 11:07PM 3.44 | 11:26AM 3.19 | 11:43PM 3.34 | 12:03PM 3.03 | 12:23AM 3.21 | 12:47PM 2.86 | 1:11AM 3.09 | 1:41PM 2.70 | 2:10AM 2.99 | 2:53PM 2.60 | 3:22AM 2.98 | |||||||||||||
Low Tide / height (m) | 2:32PM 0.53 | 2:46AM 0.69 | 3:06PM 0.47 | 3:20AM 0.58 | 3:37PM 0.45 | 3:53AM 0.50 | 4:09PM 0.47 | 4:27AM 0.46 | 4:41PM 0.52 | 5:02AM 0.48 | 5:16PM 0.61 | 5:39AM 0.55 | 5:52PM 0.72 | 6:19AM 0.67 | 6:31PM 0.84 | 7:03AM 0.80 | 7:14PM 0.97 | 7:51AM 0.92 | 8:02PM 1.08 | 8:46AM 0.98 | 8:58PM 1.16 | 9:47AM 0.97 | 10:01PM 1.18 | |||||||||||||
Friday 09 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||||||||||||||
| Sunrise | 5:30 | - | - | 5:28 | - | - | 5:26 | - | - | 5:24 | - | - | 5:22 | - | - | 5:22 | - | - | 5:20 | - | - | 5:18 | - | - | 5:16 | - | - | 5:15 | - | - | 5:13 | - | - | 5:11 | - | - |
| Sunset | - | 8:58 | - | - | 9:00 | - | - | 9:01 | - | - | 9:02 | - | - | 9:05 | - | - | 9:07 | - | - | 9:07 | - | - | 9:09 | - | - | 9:10 | - | - | 9:13 | - | - | 9:14 | - | - | 9:15 | - |
 | |  | |  |  | |  |  |  |  | | | | | | | | | | | | | | | | | | | | | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | 4 | 2 | - | 6 | 2 | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 6 |
| Temp. °C | 12 | 13 | 14 | 17 | 17 | 15 | 16 | 18 | 16 | 17 | 17 | 14 | 18 | 18 | 16 | 18 | 20 | 17 | 18 | 19 | 17 | 18 | 19 | 17 | 15 | 20 | 19 | 17 | 18 | 15 | 16 | 17 | 15 | 16 | 16 | 13 |
| Feels °C (?) | 10 | 10 | 12 | 15 | 14 | 12 | 15 | 14 | 12 | 15 | 17 | 13 | 17 | 16 | 13 | 16 | 18 | 14 | 16 | 15 | 14 | 15 | 14 | 13 | 14 | 18 | 17 | 12 | 13 | 11 | 14 | 14 | 13 | 13 | 13 | 10 |
Short Range Forecast: Light rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 18°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Mon afternoon. Warm (max 20°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light. | Days 6-9 Weather Summary Mostly dry. Warm (max 20°C on Sat afternoon, min 11°C on Fri night). Wind will be generally light. | Long Range Forecast: Moderate rain (total 14mm), heaviest on Wed morning. Very mild (max 18°C on Sun afternoon, min 11°C on Wed morning). Winds increasing (calm on Mon night, strong winds from the S by Wed morning). | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trefor 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 Trefor Surf forecast
The above surf forecast table for Trefor provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Trefor can be found by selecting the local surf guide option on the grey menu. Our Trefor 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 (Trefor) 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 Trefor 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 Lleyn Peninsula? If you are looking for accommodation near Trefor, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 21 km (13 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Anglesey which is 29 km (18 miles) away, Bangor, Holyhead and Llandudno.
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