Surf Forecasts:
Porth Ceriad surf forecast from 25 Aug 2026:
- Most powerful swell: Tuesday 1 Sep, 10AM (local time) - 10ft (3.0m), 8s period, SW swell with 1,087 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 3.0m 8s and forecast to arrive on Tuesday (Sep 01) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Aug 31) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Tue 1st Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming our way for the next couple of weeks.
To be straight with you, it’s a pretty grim run for a while. We’ve got nothing but small, messy, or blown-out conditions right through the end of August and into the first week of September. The first real glimpse of something worthwhile doesn’t show up until Tuesday the 8th of September at Porth Ceriad. That morning, we’re looking at a clean 3 ft swell out of the WSW with a very long period of 15 seconds. That’s proper groundswell energy, and with a moderate offshore wind from the north, it should be glassy. The combined energy is strong at 332 – that’s serious power for a wave that size, so it’ll be pushing some nice shape. That afternoon stays clean with the same 3 ft swell and a 14-second period, still with a clean offshore breeze.
Now, since this is an exposed break, that long-period swell will wrap in nicely. It’s a beginner-friendly spot, and the water temp is about average for this time of year, so no surprises there. Keep in mind that this is over a week away, so while the signals are good, it’s a long-range call and worth keeping an eye on.
Before that, you’re looking at a real dry spell. From now through to the 7th of September, it’s just poor surf – either tiny, windy, or both. The only slight exception is the afternoon of Saturday the 5th of September, where you get a very ordinary 2 ft wave from the SW with clean conditions. It’s surfable, but nothing to write home about.
The real standout here is that Tuesday the 8th of September. If you’re keen, mark the calendar. Everything before that is mostly for the kites, not the paddle. The long period on that Tuesday makes it a point break and reef kind of day – it might be a little too straight for the beach, but Porth Ceriad should handle it.
Stay patient, lads.
- Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Thu afternoon. Warm (max 22°C on Tue afternoon, min 16°C on Tue morning). Winds decreasing (strong winds from the E on Tue night, light winds from the NE by Thu morning). | Days 4-6 Weather SummaryHeavy rain (total 28mm), heaviest during Fri night. Very mild (max 18°C on Fri night, min 13°C on Sun night). Winds increasing (light winds from the WSW on Sat night, strong winds from the WNW by Sun night). | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
AM | 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) | E 3 | SW 13 | E 4 | SSW 8 | SSW 8 | W 12 | W 12 | W 12 | SW 8 | SW 5 | SW 5 | SW 7 | SW 6 | SW 7 | SW 8 | SW 8 | SW 8 | SW 7 | W 5 | WSW 7 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 7 | 13 | 6 | 6 | 3 | 3 | 3 | 77 | 60 | 63 | 19 | 99 | 275 | 250 | 78 | 45 | 124 | 87 | 84 | 328 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-on | cross-off |
High Tide | 7:46PM3.59m | 8:04AM3.49m | 8:20PM3.91m | 8:37AM3.75m | 8:52PM4.21m | 9:08AM3.98m | 9:23PM4.45m | 9:41AM4.17m | 9:56PM4.61m | 10:14AM4.29m | 10:31PM4.67m | 10:49AM4.33m | 11:07PM4.61m | ||||||||
Low Tide | 2:25PM1.03m | 2:53AM0.81m | 3:01PM0.77m | 3:27AM0.54m | 3:34PM0.55m | 4:01AM0.34m | 4:07PM0.40m | 4:34AM0.22m | 4:39PM0.34m | 5:06AM0.19m | 5:11PM0.35m | 5:39AM0.26m | 5:43PM0.44m | ||||||||
 |  |  | | |  |  |  | | | |  |  | | | |  |  |  | | | |
 | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:14 | — | — | 8:12 | — | — | 8:09 | — |
mm | — | — | — | — | — | — | 5 | 5 | — | — | — | 9 | 2 | — | 3 | 2 | 6 | 6 | — | 1 | — |
Temp °C | 19 | 22 | 21 | 18 | 21 | 20 | 17 | 17 | 17 | 17 | 17 | 18 | 17 | 17 | 17 | 17 | 18 | 16 | 14 | 17 | 16 |
Feels °C | 17 | 18 | 13 | 17 | 21 | 19 | 16 | 18 | 14 | 14 | 15 | 15 | 14 | 11 | 11 | 14 | 14 | 9 | 8 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 7 | SW 7 | S 6 | — | — | — | SW 4 | — | — | SW 8 | SW 8 | — | SW 7 | NW 5 | NNW 5 | — |
| kJ | 7 | 3 | 3 | 6 | 6 | 2 | 2 | 1 | — | — | — | 19 | — | — | 250 | 78 | — | 124 | 38 | 2 | — |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 13 | SW 13 | W 13 | — | — | W 12 | W 12 | — | — | — | SW 7 | — | — | — | NNW 3 | — | — | — | — | — |
| kJ | 3 | 7 | 7 | 3 | — | — | 3 | 3 | — | — | — | 12 | — | — | — | 1 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 12 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | ENE 2 | E 4 | SE 3 | — | — | ESE 2 | — | SW 8 | SW 5 | SW 5 | — | SW 6 | SW 7 | — | — | SW 8 | NW 3 | W 5 | WSW 7 | SW 6 |
| kJ | 6 | 1 | 13 | 2 | — | — | 1 | — | 77 | 60 | 63 | — | 99 | 275 | — | — | 45 | 4 | 87 | 84 | 328 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 254 | 213 | 186 | 213 | 213 | 312 | 303 | 241 | 241 | 200 | 138 | 322 | 103 | 339 | 143 | 201 | 312 | 619 | 317 | 342 | 126 |
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 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