Surf Forecasts:
Porth Ceriad surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 1PM (local time) - 3.5ft (1.1m), 5s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 10PM (local time) - 4.5ft (1.4m), 6s period, SW swell with 152 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 1PM (local time) - 3.5ft (1.1m), 5s period with WSW swell.
Best Forecast Surf Conditions for Porth Ceriad this week:
The surf forecast for Porth Ceriad over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 30) at 1PM. The primary swell is predicted to be 1.1m and 5s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Porth Ceriad in the next 16 days are 1.4m 6s and forecast to arrive on Thursday (Jul 30) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Monday (Jul 27) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Thu 30th Jul) | 3.5ft (1.1m) 5s |
| Best Surf | 1PM (Thu 30th Jul) | 3.5ft (1.1m) 5s |
| Most Powerful | 10PM (Thu 30th Jul) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for Porth Ceriad.
Honestly, mate, it’s a bit of a tough stretch ahead. The forecast is looking pretty flat for the majority of the next sixteen days, with only a couple of glimmers of hope right at the very end. We’ve got a long gap of nothing really worth paddling out for, then a potential window that might just save the run.
The water temperature is sitting at a very unusual 65°, which is a full 5° warmer than normal for this time of year. That’s proper tropical for Wales, but it’s not helping the surf.
The first few days are a write-off. From Sunday the 26th of July right through to the morning of Friday the 7th of August, it’s mostly poor surf conditions with no energy. The swell is tiny, the wind is mostly cross-on or onshore, and the combined energy is barely registering. There’s a brief moment on Thursday the 6th of August afternoon where the wind goes offshore from the north, but the swell is only 3ft from the west-southwest with a shoddy 4-second period, so it’s not going to do much.
Then, finally, on the morning of Friday the 7th of August, we get something to talk about. The wind is offshore from the north-northwest at 12 mph, which will keep it clean. The swell bumps up to 4ft from the southwest with a 6-second period. The combined energy is moderate at 104. It’s still only described as “surfable waves but very ordinary conditions,” so don’t expect perfection, but it’s the best we’ve seen in a fortnight. For a beginner-friendly spot like Porth Ceriad, that 4ft is ideal, and the offshore wind will make it look a lot better than it has any right to.
After that, it drops straight back off again into flat, poor conditions for the rest of the forecast period.
So, the standout here is the Friday morning of the 7th of August. It’s the only real chance to get wet, and with clean, offshore wind and a manageable size, it’s the one to aim for. The rest of the run is a bit of a bummer, but that’s how it goes sometimes.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Tue afternoon, min 14°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 18°C on Wed afternoon, min 13°C on Thu night). Mainly fresh winds. | |||||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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) | WNW 6 | WNW 5 | NW 5 | SW 4 | SW 5 | SW 5 | SW 5 | SW 5 | SW 4 | WSW 4 | SW 4 | SW 5 | SW 5 | SW 6 | WSW 6 | SW 6 | SW 5 | WSW 5 | SW 5 | WSW 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 20 | 27 | 49 | 52 | 33 | 17 | 4 | 2 | 21 | 87 | 67 | 83 | 25 | 20 | 27 | 10 | 4 | 2 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross | cross-on | off | cross | cross-on | cross-off | cross-off | cross-on | on |
High Tide | 7:22PM3.37m | 7:44AM3.33m | 8:04PM3.61m | 8:23AM3.51m | 8:41PM3.85m | 8:59AM3.68m | 9:16PM4.07m | 9:32AM3.82m | 9:49PM4.25m | 10:06AM3.92m | 10:23PM4.38m | 10:40AM3.99m | 10:57PM4.42m | |||||||
Low Tide | 2:38AM1.09m | 2:51PM1.04m | 3:18AM0.86m | 3:28PM0.83m | 3:55AM0.66m | 4:02PM0.66m | 4:30AM0.51m | 4:35PM0.55m | 5:04AM0.42m | 5:09PM0.50m | 5:38AM0.39m | 5:41PM0.53m | ||||||||
 |  |  | |  | | |  |  | | |  | | | | | | | | | |
 | — | — | 5:26 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — |
 | — | 9:21 | — | — | 9:20 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 15 | 17 | 18 | 18 | 19 | 17 | 18 | 18 | 17 | 16 | 17 | 18 | 14 | 16 | 17 | 14 | 15 | 15 |
Feels °C | 12 | 12 | 12 | 15 | 16 | 16 | 17 | 16 | 18 | 17 | 15 | 14 | 12 | 15 | 11 | 11 | 12 | 11 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | — | — | NW 5 | NNW 4 | — | — | — | SW 5 | SW 4 | — | — | — | — | SW 6 | WSW 6 | SW 6 | SW 5 | WSW 5 | NW 4 | WSW 4 |
| kJ | — | — | 20 | 2 | — | — | — | 17 | 4 | — | — | — | — | 83 | 25 | 17 | 27 | 10 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 4 | — | — | SW 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | 4 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | WNW 6 | WNW 5 | WSW 5 | SW 4 | SW 5 | SW 5 | SW 5 | — | — | WSW 4 | SW 4 | SW 5 | SW 5 | — | NW 4 | WSW 6 | NW 3 | NW 4 | — | — |
| kJ | 94 | 37 | 15 | 27 | 49 | 52 | 33 | — | — | 2 | 21 | 87 | 67 | — | 16 | 20 | 1 | 5 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 494 | 339 | 303 | 298 | 229 | 255 | 267 | 248 | 213 | 339 | 324 | 339 | 494 | 0 | 306 | 532 | 306 | 305 | 317 | 298 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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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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