- Forecast
- Maps
- Live
- Weather State
- Spot Information
Trefor Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Trefor surfForecast / Wales – Lleyn / UK
16 Day Weather and Surf, issued 12 am Monday 01 Jun 2026 BSTForecast 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
14.7° C
(Which is 3.1°C warmer than normal for this time of year)Trefor surf forecast from 1 Jun 2026:
- Most powerful swell: Thursday 4 Jun, 4PM (local time) - 5.5ft (1.7m), 12s period, WSW swell with 826 kJ wave energy.
Best Forecast Surf Conditions for Trefor this week:
The most powerful waves expected at Trefor in the next 16 days are 1.7m 12s and forecast to arrive on Thursday (Jun 04) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Jun 01) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 4th Jun) | 5.5ft (1.7m) 12s |
Table - best surf conditions forecast for Trefor over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 25mm), heaviest during Mon afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Mon night). Winds increasing (light winds from the SW on Mon night, strong winds from the SW by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Thu morning. Very mild (max 13°C on Sat afternoon, min 10°C on Thu night). Winds decreasing (fresh winds from the WNW on Thu night, light winds from the SW by Fri night). | ||||||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | Sunday 7 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
WSW 11 | SW 14 | SW 14 | SW 6 | SW 6 | WSW 9 | WSW 9 | SW 7 | SW 7 | WSW 7 | WSW 12 | SW 7 | W 5 | NW 5 | SW 13 | W 13 | W 13 | SW 4 | SW 12 | SW 12 | SW 10 | |
12 | 8 | 8 | 28 | 27 | 96 | 17 | 321 | 284 | 363 | 826 | 91 | 77 | 3 | 7 | 3 | 3 | 7 | 6 | 5 | 4 | |
Wind (km/h) | |||||||||||||||||||||
off | cross-off | cross-off | cross-on | cross | cross | off | cross-off | cross | cross | cross | cross-on | cross-on | cross-off | cross-on | cross | cross-off | off | off | cross-off | cross | |
High Tide | 9:58AM3.34m | 10:13PM3.51m | 10:33AM3.28m | 10:49PM3.47m | 11:08AM3.17m | 11:24PM3.40m | 11:44AM3.03m | 00:02AM3.31m | 12:22PM2.89m | 00:41AM3.21m | 1:04PM2.76m | 1:26AM3.11m | 1:55PM2.66m | 2:18AM3.03m | |||||||
Low Tide | 4:43AM0.53m | 4:55PM0.65m | 5:19AM0.54m | 5:30PM0.70m | 5:58AM0.60m | 6:07PM0.76m | 6:38AM0.68m | 6:45PM0.83m | 7:20AM0.77m | 7:25PM0.92m | 8:04AM0.85m | 8:09PM1.02m | 8:52AM0.90m | 8:57PM1.10m | |||||||
 |  |  |  |  |  |  | | | | | | | | |  | |  | | | | |
 | 4:58 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:54 | — | — | 4:54 | — | — | 4:54 | — | — |
 | — | — | 9:31 | — | — | 9:32 | — | — | 9:35 | — | — | 9:36 | — | — | 9:37 | — | — | 9:37 | — | — | 9:38 |
5 | 10 | — | — | — | 1 | 5 | 1 | 4 | 5 | 4 | 2 | — | — | 2 | — | — | — | — | 1 | 2 | |
Temp °C | 14 | 14 | 13 | 13 | 15 | 14 | 14 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 12 | 14 | 15 | 14 |
12 | 11 | 10 | 11 | 14 | 13 | 8 | 7 | 7 | 7 | 8 | 7 | 6 | 6 | 9 | 7 | 8 | 9 | 7 | 9 | 10 | |
Swell 1 Height (m) Direction Period (s) | WSW 11 | SW 14 | SW 14 | SW 6 | SW 6 | WSW 9 | NW 4 | — | — | — | — | SW 7 | — | NW 5 | SW 13 | W 13 | W 13 | SW 4 | WSW 5 | SW 5 | SW 10 |
 kJ | 12 | 8 | 8 | 28 | 27 | 96 | 1 | — | — | — | — | 91 | — | 3 | 7 | 3 | 3 | 7 | 3 | 1 | 4 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | W 10 | W 13 | WNW 4 | W 16 | WSW 9 | — | — | — | — | WSW 12 | — | — | — | — | W 12 | W 12 | SW 12 | SW 12 | SW 6 |
| kJ | 8 | 8 | 2 | 3 | 1 | 5 | 17 | — | — | — | — | 57 | — | — | — | — | 3 | 3 | 6 | 5 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 13 | — | NW 4 | — | — | — | — | — | — | — | — | — | — | — | W 7 | — | SW 6 |
| kJ | — | — | — | — | 3 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | — | — | — | SSW 5 | SW 7 | SW 7 | WSW 7 | WSW 12 | WNW 5 | W 5 | SW 4 | SW 5 | SW 6 | SW 4 | — | SSW 3 | SSW 3 | SW 4 |
| kJ | 88 | 114 | 62 | — | — | — | 98 | 321 | 284 | 363 | 826 | 67 | 77 | 36 | 40 | 32 | 14 | — | 1 | 1 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 173 | 295 | 149 | 20 | 276 | 20 | 283 | 268 | 127 | 325 | 485 | 276 | 144 | 394 | 149 | 149 | 284 | 154 | 154 | 396 | 276 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- 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 16 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.
Nearest