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Porth Ceriad Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Porth Ceriad surfForecast / Wales – Lleyn / UK
16 Day Weather and Surf, issued 5 am Saturday 21 Mar 2026 GMTForecast update in hr min s Forecast update imminent
Porth Ceriad surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Ceriad sea temperature is
9.0° C
(Which is 1.1°C warmer than normal for this time of year)Best Forecast Surf Conditions for Porth Ceriad this week:
The most powerful waves expected at Porth Ceriad in the next 16 days are 3.0m 7s and forecast to arrive on Wednesday (Mar 25) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Tuesday (Mar 24) at 9PM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Wed 25th Mar) | 10ft (3.0m) 7s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Very mild (max 11°C on Sat afternoon, min 6°C on Sun night). Winds increasing (calm on Sun morning, strong winds from the SW by Mon night). | Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Tue morning. Very mild (max 10°C on Tue morning, min 5°C on Tue night). Winds decreasing (near gales from the WNW on Tue night, calm by Thu night). | ||||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| 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) (?) | 14 | 13 | 13 | 10 | 12 | 11 | 10 | 9 | 5 | 7 | 8 | 6 | 7 | 7 | 7 | 13 | 12 | 12 | 4 | 4 | 5 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 4 | 3 | 3 | 4 | 6 | 11 | 15 | 8 | 79 | 527 | 532 | 270 | 907 | 637 | 543 | 3 | 3 | 3 | 11 | 9 | 8 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | cross- on | cross- on | glass | off | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | off | cross- off | glass | cross- on | on | on |
High Tide / height (m) | 9:29AM 4.91 | 9:49PM 4.62 | 10:09AM 4.77 | 10:30PM 4.48 | 10:52AM 4.46 | 11:14PM 4.20 | 11:40AM 4.04 | 12:03AM 3.84 | 12:36PM 3.55 | 1:04AM 3.46 | 1:48PM 3.13 | 2:27AM 3.21 | 3:24PM 2.96 | ||||||||
Low Tide / height (m) | 4:34PM 0.10 | 4:45AM 0.25 | 5:11PM 0.33 | 5:24AM 0.44 | 5:51PM 0.65 | 6:11AM 0.71 | 6:40PM 1.01 | 7:15AM 1.01 | 7:51PM 1.33 | 8:45AM 1.23 | 9:28PM 1.49 | 10:25AM 1.21 | 11:02PM 1.37 | ||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| Sunrise | 6:18 | - | - | 6:16 | - | - | 6:13 | - | - | 6:11 | - | - | 6:09 | - | - | 6:07 | - | - | 6:05 | - | - |
| Sunset | - | 6:31 | - | - | 6:32 | - | - | 6:35 | - | - | 6:37 | - | - | 6:38 | - | - | 6:40 | - | - | 6:42 | - |
 | |  |  | |  | | | |  | |  |  | | |  | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | 1 | 2 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 11 | 10 | 9 | 9 | 9 | 7 | 8 | 10 | 10 | 10 | 7 | 6 | 7 | 7 | 6 | 6 | 7 | 8 | 9 | 9 |
| Feels °C (?) | 7 | 8 | 7 | 7 | 6 | 4 | 3 | 3 | 1 | 0 | 1 | -3 | -6 | -4 | -3 | 0 | 1 | 3 | 4 | 5 | 5 |
- 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 Porth Ceriad 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 Ceriad Surf forecast
The above surf forecast table for Porth Ceriad provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Porth Ceriad can be found by selecting the local surf guide option on the grey menu. Our Porth Ceriad 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 Ceriad) 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 Ceriad 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.
Porth Ceriad is 29 km (18 miles) from Porthmadog. If you plan a holiday in Lleyn Peninsula, look for hotels and other accommodation in Porthmadog. Porthmadog has rooms for a wide range of budgets as well as car hire and transport links.
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