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Porth Towyn surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 6 pm Monday 20 Oct 2025 BST
Best Forecast Surf Conditions for Porth Towyn this week:
The most powerful waves expected at Porth Towyn in the next 12 days are 3.5m 8s and forecast to arrive on Friday (Oct 24) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Saturday (Oct 25) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Fri 24th Oct) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Porth Towyn over the next 12 days.
Short Range Forecast Light rain (total 9mm), mostly falling on Wed night. Very mild (max 14°C on Mon afternoon, min 9°C on Thu morning). Mainly near gales. | Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Thu night. Very mild (max 12°C on Fri morning, min 10°C on Thu afternoon). Winds decreasing (gales from the W on Thu night, strong winds from the N by Sun morning). | ||||||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 5 | 6 | 8 | 7 | 7 | 9 | 7 | 7 | 8 | 10 | 7 | 9 | 8 | 8 | 7 | 8 | 7 | 4 | 6 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 644 | 249 | 83 | 214 | 88 | 64 | 16 | 31 | 671 | 555 | 1255 | 625 | 589 | 70 | 23 | 9 | 2 | 0 | 0 | 17 | 356 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | on | cross | cross- off | cross- on | on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- on | on | cross- on | ||
High Tide / height (m) | 8:51PM 3.70 | 9:10AM 3.59 | 9:23PM 3.75 | 9:40AM 3.67 | 9:56PM 3.72 | 10:11AM 3.68 | 10:27PM 3.63 | 10:41AM 3.61 | 10:59PM 3.47 | 11:11AM 3.48 | 11:30PM 3.26 | 11:43AM 3.31 | 12:03AM 3.03 | 12:19PM 3.10 | |||||||||
Low Tide / height (m) | 3:51AM 0.20 | 4:03PM 0.32 | 4:20AM 0.26 | 4:33PM 0.32 | 4:48AM 0.37 | 5:03PM 0.38 | 5:17AM 0.52 | 5:35PM 0.50 | 5:48AM 0.70 | 6:10PM 0.67 | 6:22AM 0.90 | 6:49PM 0.88 | 7:02AM 1.10 | ||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||||
| Sunrise | - | - | 7:54 | - | - | 7:56 | - | - | 7:58 | - | - | 7:58 | - | - | 8:00 | - | - | 8:03 | - | - | 8:04 | ||
| Sunset | 6:13 | - | - | 6:10 | - | - | 6:08 | - | - | 6:06 | - | - | 6:04 | - | - | 6:01 | - | - | 6:00 | - | - | ||
 |  |  |  |  | | |  |  |  | | | | | | | | | | | | |||
Rain (mm) | - | 2 | 1 | - | - | - | 1 | 5 | - | 1 | 5 | - | 1 | 4 | - | 2 | 1 | - | - | 1 | 2 | ||
| Temp. °C | 14 | 14 | 13 | 14 | 12 | 12 | 13 | 11 | 10 | 10 | 11 | 12 | 12 | 11 | 10 | 10 | 10 | 11 | 11 | 12 | 13 | ||
| Feels °C (?) | 11 | 11 | 7 | 7 | 6 | 7 | 8 | 9 | -3 | -3 | 0 | 1 | 1 | -1 | -2 | -1 | -2 | 1 | 1 | 5 | 5 | ||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - Lleyn
Wind reports 16 km away suggest it is still onshore at Porth Towyn (light winds from the NW at Aberdaron). A 1.0m groundswell from the SW
16 km away, 1 h 48 min ago
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 Porth Towyn 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 Porth Towyn Surf forecast
The above surf forecast table for Porth Towyn provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Porth Towyn can be found by selecting the local surf guide option on the grey menu. Our Porth Towyn 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 (Porth Towyn) 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 Porth Towyn 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 Porth Towyn, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 34 km (21 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 39 km (24 miles) away, Holyhead, Bangor and Aberystwyth.
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