Surf Forecasts:
Porth Ceriad surf forecast from 8 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 1AM (local time) - 1.5ft (0.4m), 9s period, SW swell with 21 kJ wave energy.
Best Forecast Surf Conditions for Porth Ceriad this week:
The most powerful waves expected at Porth Ceriad in the next 16 days are 0.4m 9s and forecast to arrive on Thursday (Aug 13) at 1AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Aug 15) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 13th Aug) | 1.5ft (0.4m) 9s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright, Rusty here, let’s have a look at what Porth Ceriad is cooking up for the next couple of weeks.
Honestly, mate, it’s a pretty flat and frustrating run ahead. The first week and a half are a write-off. We’re looking at a long stretch of tiny, weak swell with hardly any energy to speak of. From Saturday the 8th to around Wednesday the 19th, the waves are barely a whisper – we’re talking 0.3ft to 2ft at best. The combined swell energy is in the doldrums, often single digits (4, 11, 9) and never breaking into anything worthwhile. You’d be spending more time floating than surfing. There’s a little glimmer on Thursday morning the 13th with glassy conditions and 1ft, but it’s still too small to get excited about.
Now, things try to pick up a bit on Thursday the 20th of August. The morning shows a 4ft west swell with clean, cross-offshore winds from the northwest at 12 mph. The energy climbs to a modest 81, which is the first sign of life. But even then, it’s not enough to call it a standout.
The real highlight, if you can call it that, comes in the second week on Sunday the 23rd of August. The afternoon sees a jump to 5ft from the southwest, but the wind is a messy cross-onshore at 19 mph, making it lumpy. The energy hits 106, so there’s some push, but the quality is gone. For a beginner-friendly spot like this, anything over 5ft gets tricky, and with that wind, it’s a battle.
There’s simply nothing worth paddling out for in this forecast. It’s one of those blank runs where you just wait for the next chart. Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue morning, min 14°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Wed afternoon, min 17°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 8 | WSW 7 | SW 6 | SW 12 | SW 4 | SW 5 | SW 6 | SW 6 | SE 3 | SSW 3 | W 11 | WSW 10 | WSW 10 | SW 9 | SW 8 | SW 8 | SW 7 | SW 4 | SW 4 | SW 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3 | 5 | 7 | 6 | 8 | 7 | 5 | 6 | 2 | 2 | 3 | 10 | 9 | 21 | 17 | 16 | 14 | 12 | 7 | 9 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | off | off | cross-off | cross-off | cross-on | cross | cross-on | on | cross-off | glassy | glassy | cross-off | on | on | cross | glassy |
High Tide | 4:47PM3.30m | 5:27AM3.38m | 6:03PM3.53m | 6:38AM3.60m | 7:06PM3.90m | 7:36AM3.87m | 7:59PM4.30m | 8:26AM4.13m | 8:47PM4.64m | 9:12AM4.31m | 9:31PM4.85m | 9:55AM4.39m | 10:13PM4.92m | |||||||
Low Tide | 00:15AM1.24m | 12:58PM1.15m | 1:37AM0.91m | 2:04PM0.85m | 2:37AM0.52m | 2:57PM0.55m | 3:28AM0.17m | 3:43PM0.31m | 4:13AM-0.07m | 4:24PM0.16m | 4:55AM-0.16m | 5:03PM0.12m | ||||||||
 |  |  | | | | |  |  | | | | | | | | | | | | |
 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 17 | 18 | 15 | 16 | 17 | 21 | 22 | 21 | 22 | 24 | 24 | 23 | 24 | 21 | 17 | 19 | 19 |
Feels °C | 16 | 16 | 15 | 15 | 16 | 12 | 12 | 14 | 20 | 20 | 21 | 20 | 21 | 22 | 21 | 21 | 22 | 17 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | WSW 3 | WSW 7 | SW 6 | SW 6 | SW 4 | SW 5 | SW 6 | NNW 3 | SW 6 | SSW 3 | — | WSW 10 | WSW 10 | SW 9 | SW 8 | SW 8 | SW 10 | SW 8 | SW 8 | SW 4 |
| kJ | 1 | 5 | 7 | 2 | 8 | 7 | 5 | 1 | 2 | 1 | — | 10 | 9 | 21 | 17 | 16 | 4 | 2 | 2 | 9 |
Swell 2 Height (m) Direction Period (s) | SW 8 | — | W 12 | SW 12 | SW 6 | WNW 3 | — | SW 6 | — | SW 6 | SW 6 | SW 6 | — | — | — | — | — | — | — | SW 7 |
| kJ | 3 | — | 3 | 6 | 2 | 1 | — | 6 | — | 2 | 1 | 1 | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 6 | — | — | — | — | W 11 | — | SW 6 | — | — | — | — | — | — | W 11 |
| kJ | — | — | — | — | — | 1 | — | — | — | — | 3 | — | 1 | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | WSW 3 | WSW 3 | WSW 3 | NNW 3 | NW 4 | NW 4 | — | SE 3 | — | — | — | — | — | — | — | SW 7 | SW 4 | SW 4 | — |
| kJ | — | 1 | 1 | 1 | 7 | 3 | 3 | — | 1 | — | — | — | — | — | — | — | 14 | 12 | 7 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 303 | 298 | 341 | 303 | 303 | 303 | 319 | 254 | 321 | 337 | 113 | 107 | 125 | 113 | 125 | 324 | 138 | 138 | 460 | 113 |
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)
Latest Updates
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.
Nearest