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Pontllyfni surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 12 pm Wednesday 20 Aug 2025 BST
Best Forecast Surf Conditions for Pontllyfni this week:
The surf forecast for Pontllyfni over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 26) at 4AM. The primary swell is predicted to be 0.4m and 21s period with a secondary swell of 0.4m and 4s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Pontllyfni in the next 12 days are 0.5m 19s and forecast to arrive on Tuesday (Aug 26) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 27) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 26th Aug) | 1.5ft (0.4m) 21s |
| Best Surf | 4AM (Tue 26th Aug) | 1.5ft (0.4m) 21s |
| Most Powerful | 10AM (Tue 26th Aug) | 1.5ft (0.5m) 19s |
Table - best surf conditions forecast for Pontllyfni over the next 12 days.
Short Range Forecast Mostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Mon afternoon, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
| 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) (?) | 6 | 6 | 3 | 6 | 6 | 13 | 12 | 12 | 12 | 10 | 9 | 18 | 8 | 16 | 16 | 21 | 10 | 22 | 19 | 17 | 16 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 1 | 1 | 3 | 1 | 1 | 3 | 4 | 3 | 3 | 3 | 3 | 9 | 2 | 7 | 13 | 18 | 19 | 97 | 214 | 119 | 95 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | glass | on | glass | glass | cross- on | glass | glass | glass | cross- off | glass | glass | off | cross- off | cross- off | cross- off | glass | cross- on | cross- off |
High Tide / height (m) | 7:27PM 3.24 | 8:01AM 3.12 | 8:18PM 3.51 | 8:46AM 3.30 | 9:01PM 3.75 | 9:26AM 3.43 | 9:41PM 3.92 | 10:03AM 3.52 | 10:18PM 4.00 | 10:39AM 3.55 | 10:53PM 3.97 | 11:13AM 3.52 | 11:28PM 3.84 | ||||||||
Low Tide / height (m) | 2:12PM 0.78 | 2:44AM 0.44 | 3:02PM 0.53 | 3:32AM 0.18 | 3:45PM 0.33 | 4:14AM 0.01 | 4:23PM 0.20 | 4:52AM -0.06 | 4:59PM 0.16 | 5:26AM -0.03 | 5:31PM 0.20 | 5:58AM 0.09 | 6:02PM 0.30 | ||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
| Sunrise | 6:05 | - | - | 6:07 | - | - | 6:09 | - | - | 6:09 | - | - | 6:11 | - | - | 6:13 | - | - | 6:15 | - | - |
| Sunset | - | 8:34 | - | - | 8:31 | - | - | 8:30 | - | - | 8:28 | - | - | 8:25 | - | - | 8:22 | - | - | 8:21 | - |
 |  |  | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 17 | 14 | 17 | 18 | 14 | 17 | 17 | 15 | 19 | 19 | 17 | 19 | 20 | 17 | 22 | 24 | 18 | 17 | 17 | 15 |
| Feels °C (?) | 15 | 14 | 12 | 16 | 17 | 12 | 16 | 16 | 14 | 18 | 19 | 16 | 19 | 20 | 17 | 20 | 22 | 16 | 18 | 17 | 15 |
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Recent Eyeball Surf Reports for Wales - Lleyn
Offshore wind has become cross-off at Hells Mouth (Porth Neigwl) (moderate winds from the NNE at Aberdaron 11 km from Hells Mouth (Porth Neigwl)). 0.1m 6s windswell from the SW to make surfable waves.
1 h 24 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 Pontllyfni 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 Pontllyfni Surf forecast
The above surf forecast table for Pontllyfni provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Pontllyfni can be found by selecting the local surf guide option on the grey menu. Our Pontllyfni 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 (Pontllyfni) 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 Pontllyfni 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 Pontllyfni, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 20 km (12 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 26 km (16 miles) away, Bangor, Holyhead and Llandudno.
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