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Trefor Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Trefor surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 11 pm Sunday 01 Mar 2026 GMTForecast update in hr min s Forecast update imminent
Trefor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trefor sea temperature is
7.8° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Trefor this week:
The surf forecast for Trefor over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 02) at 12PM. The primary swell is predicted to be 1.8m and 11s period with a secondary swell of 1.5m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trefor in the next 12 days are 2.5m 10s and forecast to arrive on Monday (Mar 02) at 3AM. Winds are predicted to be 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 Saturday (Mar 07) at 12AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Mon 2nd Mar) | 6ft (1.8m) 11s |
| Best Surf | 12PM (Mon 2nd Mar) | 6ft (1.8m) 11s |
| Most Powerful | 3AM (Mon 2nd Mar) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Trefor over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 12mm), heaviest on Mon morning. Very mild (max 12°C on Wed afternoon, min 5°C on Mon night). Winds decreasing (near gales from the S on Sun night, calm by Mon morning). | Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Thu afternoon. Very mild (max 12°C on Wed night, min 5°C on Thu night). Winds increasing (light winds from the W on Thu night, fresh winds from the S by Sat morning). | |||||||||||||||||||||
Monday 02 | Tuesday 03 | Wednesday 04 | Thursday 05 | Friday 06 | Saturday 07 | Sun 08 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 9 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 14 | 6 | 12 | 6 | 7 | 4 | 16 | 6 | 7 | 7 | 6 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 1339 | 1291 | 416 | 115 | 52 | 28 | 11 | 9 | 2 | 4 | 43 | 3 | 80 | 14 | 1 | 5 | 226 | 299 | 308 | 186 | 124 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | on | cross- on | cross | cross- off | off | off | off | off | cross- off | on | cross- off | cross- off | cross- off | off | cross- off | off | off | off | |
High Tide / height (m) | 7:42AM 3.75 | 8:09PM 3.47 | 8:23AM 3.97 | 8:46PM 3.61 | 9:01AM 4.09 | 9:22PM 3.69 | 9:37AM 4.10 | 9:57PM 3.69 | 10:12AM 3.99 | 10:30PM 3.61 | 10:47AM 3.78 | 11:03PM 3.47 | 11:21AM 3.50 | |||||||||
Low Tide / height (m) | 2:24AM 0.32 | 2:53PM -0.07 | 3:05AM 0.13 | 3:32PM -0.20 | 3:42AM 0.03 | 4:09PM -0.20 | 4:16AM 0.03 | 4:42PM -0.09 | 4:49AM 0.13 | 5:13PM 0.12 | 5:20AM 0.29 | 5:43PM 0.39 | 5:51AM 0.51 | |||||||||
Monday 02 | Tuesday 03 | Wednesday 04 | Thursday 05 | Friday 06 | Saturday 07 | Sun 08 | ||||||||||||||||
| Sunrise | - | 7:03 | - | - | 7:01 | - | - | 6:58 | - | - | 6:56 | - | - | 6:54 | - | - | 6:52 | - | - | 6:50 | - | |
| Sunset | - | - | 5:55 | - | - | 5:58 | - | - | 6:00 | - | - | 6:01 | - | - | 6:04 | - | - | 6:06 | - | - | 6:07 | |
 |  |  |  |  | | |  |  | | |  |  | | |  | | | | | | ||
Rain (mm) | 6 | 5 | 1 | - | - | - | - | - | - | - | - | 16 | 3 | - | - | - | - | - | - | - | - | |
| Temp. °C | 10 | 9 | 8 | 8 | 7 | 9 | 9 | 11 | 12 | 12 | 11 | 9 | 6 | 7 | 8 | 9 | 9 | 10 | 9 | 9 | 10 | |
| Feels °C (?) | -1 | 1 | 5 | 4 | 2 | 6 | 6 | 8 | 8 | 7 | 5 | 5 | 0 | 0 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | |
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Ocean Swells (m)- Wind Speed (km/h)
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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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