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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 Wednesday 02 Jul 2025 BST
Best Forecast Surf Conditions for Trefor this week:
The most powerful waves expected at Trefor in the next 12 days are 1.8m 7s and forecast to arrive on Friday (Jul 04) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Friday (Jul 04) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Fri 4th Jul) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Trefor over the next 12 days.
Wednesday 02 | Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||||||||||||
| 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) (?) | 10 | 9 | 10 | 5 | 8 | 8 | 4 | 6 | 7 | 6 | 6 | 7 | 5 | 5 | 6 | 6 | 7 | 3 | 3 | 4 | 4 | 4 | 5 | 6 | 6 | 5 | 6 | 6 | 6 | 4 | 4 | 4 | 5 | 4 | 4 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 13 | 4 | 7 | 9 | 1 | 1 | 0 | 0 | 192 | 94 | 118 | 121 | 112 | 74 | 132 | 155 | 54 | 2 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 26 | 13 | 11 | 6 | 1 | 0 | 1 | 0 | 4 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | on | cross- on | on | cross- on | on | cross- on | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- on | on | glass | glass |
High Tide / height (m) | 2:43PM 2.71 | 3:02AM 3.03 | 3:45PM 2.63 | 4:05AM 2.86 | 4:51PM 2.62 | 5:11AM 2.77 | 5:51PM 2.69 | 6:11AM 2.78 | 6:44PM 2.80 | 7:04AM 2.84 | 7:31PM 2.95 | 7:51AM 2.95 | 8:12PM 3.11 | 8:32AM 3.06 | 8:51PM 3.28 | 9:09AM 3.16 | 9:27PM 3.44 | 9:45AM 3.25 | 10:03PM 3.59 | 10:21AM 3.31 | 10:39PM 3.71 | 10:59AM 3.33 | 11:16PM 3.78 | |||||||||||||
Low Tide / height (m) | 9:17PM 1.07 | 10:01AM 0.95 | 10:09PM 1.22 | 10:54AM 1.09 | 11:12PM 1.30 | 11:55AM 1.16 | 12:25AM 1.29 | 1:00PM 1.15 | 1:32AM 1.18 | 1:57PM 1.07 | 2:26AM 1.02 | 2:45PM 0.93 | 3:12AM 0.83 | 3:27PM 0.78 | 3:54AM 0.65 | 4:07PM 0.62 | 4:35AM 0.49 | 4:46PM 0.50 | 5:15AM 0.35 | 5:24PM 0.42 | 5:54AM 0.26 | 6:02PM 0.40 | ||||||||||||||
Wednesday 02 | Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||||||||||||
| Sunrise | 4:56 | - | - | 4:56 | - | - | 4:58 | - | - | 4:58 | - | - | 4:58 | - | - | 5:00 | - | - | 5:01 | - | - | 5:01 | - | - | 5:03 | - | - | 5:03 | - | - | 5:05 | - | - | 5:07 | - | - |
| Sunset | - | 9:45 | - | - | 9:45 | - | - | 9:45 | - | - | 9:44 | - | - | 9:44 | - | - | 9:43 | - | - | 9:43 | - | - | 9:42 | - | - | 9:40 | - | - | 9:39 | - | - | 9:38 | - | - | 9:37 | - |
 | |  |  | |  | |  |  | |  | | | | | | | | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 2 | 3 | 1 | 1 | 1 | - | 1 | - | - | - | - | - | - | - | 1 | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 15 | 14 | 13 | 15 | 15 | 15 | 14 | 15 | 16 | 16 | 14 | 14 | 15 | 13 | 14 | 15 | 14 | 13 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 17 | 17 | 17 | 16 | 17 | 19 | 17 | 14 | 16 | 16 |
| Feels °C (?) | 9 | 12 | 13 | 11 | 11 | 13 | 11 | 8 | 12 | 14 | 13 | 10 | 8 | 10 | 7 | 8 | 10 | 11 | 11 | 12 | 16 | 14 | 14 | 16 | 15 | 15 | 16 | 16 | 15 | 14 | 15 | 17 | 18 | 13 | 16 | 15 |
Short Range Forecast: Light rain (total 5mm), mostly falling on Fri night. Very mild (max 15°C on Wed afternoon, min 12°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the SSW by Fri afternoon). | Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat morning. Very mild (max 16°C on Sat morning, min 12°C on Sun night). Winds decreasing (strong winds from the NW on Sun night, light winds from the N by Mon night). | Days 6-9 Weather Summary Light rain (total 4mm), mostly falling on Wed morning. Very mild (max 18°C on Thu afternoon, min 12°C on Tue morning). Wind will be generally light. | Long Range Forecast: Mostly dry. Very mild (max 19°C on Sat afternoon, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
- 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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