Surf Forecasts:
Porth Ceriad surf forecast from 12 Jul 2026:
- Most powerful swell: Friday 17 Jul, 1AM (local time) - 1.5ft (0.4m), 8s period, SW swell with 15 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 8s and forecast to arrive on Friday (Jul 17) at 1AM. Winds are predicted to be 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 Saturday (Jul 18) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Fri 17th Jul) | 1.5ft (0.4m) 8s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Alright folks, let’s have a look at what’s on offer for Porth Ceriad. I’m not gonna lie, it’s been a tough stretch lately. We’ve had hardly a ripple for the best part of two weeks. The water’s been sitting at a warm 65°F on the 12th, a full 7°F warmer than usual – that’s very unusual and feels like you’re in the tropics, not here. But the waves? Basically nothing. Just flat, clean conditions with tiny 0.3ft leftovers.
That flat spell runs all the way from the 12th through to the morning of the 23rd. We’re talking about a gap of eleven days with no real surf. There’s a few windows of glassy mornings, like Thursday the 16th morning with that glassy SSE breeze, or Friday the 17th with another glassy start and a hint of 1ft from the SW. But it’s not enough to get excited about. Even the 22nd only offers up a weak 2ft.
Things start to look a bit more interesting on Thursday the 23rd. We finally get a pulse of swell – 4ft from the west, with a clean offshore N wind. The combined energy is only showing 48, so it’s still weak, but it’s surfable. It’s ordinary, but it’s better than nothing.
The real standout, and the only one I want to talk about, is Monday the 27th. That’s the one. Early morning, we see a solid 8ft of SW groundswell, period at 9 seconds. That’s not a huge period, but the energy is strong at 889. The wind is a light offshore from the NNW, which will keep things clean. The afternoon drops to a still very surfable 7ft, with energy at 639 and the same offshore flow. This is powerful surf, in the 6ft to 8ft range, so it’s expert territory. Beginners should sit this one out. The direction is SW, right in the optimum for this spot. After over a week of nothing, this is the window to clear your diary for. It’s a long way out, so don’t book the day off yet, but keep a very close eye on it.
Before we get there, Sunday the 26th might offer a bit of a warm-up with 4ft to 5ft, but the wind is cross or cross-onshore, so it’s going to be lumpy and choppy. Not worth rushing for.
So, in short: a painful flat spell, then one very promising day for the experts on the 27th. Fingers crossed it holds.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 15°C on Sun night). Winds decreasing (fresh winds from the NNE on Mon afternoon, light winds from the E by Wed morning). | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 24°C on Wed afternoon, min 16°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NW 4 | E 3 | SE 4 | W 19 | W 15 | W 18 | SW 18 | E 3 | W 16 | SW 16 | W 13 | SW 14 | SW 14 | SW 8 | SW 7 | SW 7 | SW 6 | SW 6 | SSW 6 | SW 11 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 3 | 1 | 7 | 4 | 6 | 12 | 5 | 5 | 10 | 3 | 8 | 8 | 15 | 13 | 12 | 7 | 6 | 4 | 5 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | glassy | cross-off | off | glassy | off | off | off | cross-off | off | glassy |
High Tide | 7:16PM3.99m | 7:44AM4.06m | 8:09PM4.31m | 8:36AM4.23m | 8:59PM4.59m | 9:25AM4.33m | 9:46PM4.77m | 10:12AM4.33m | 10:33PM4.82m | 10:58AM4.23m | 11:18PM4.74m | 11:43AM4.06m | 00:03AM4.51m | 12:29PM3.83m | |||||||
Low Tide | 2:41AM0.60m | 3:06PM0.56m | 3:37AM0.29m | 3:56PM0.38m | 4:27AM0.05m | 4:42PM0.26m | 5:14AM-0.07m | 5:26PM0.24m | 6:00AM-0.05m | 6:08PM0.31m | 6:44AM0.09m | 6:50PM0.46m | 7:26AM0.32m | ||||||||
 |  | | | | | |  |  |  | |  |  |  | | |  | | | | | |
 | — | — | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 |
 | — | 9:37 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 | — | — | 9:31 | 9:30 |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | — | — | — | — |
Temp °C | 28 | 24 | 21 | 25 | 23 | 24 | 26 | 25 | 23 | 24 | 23 | 20 | 21 | 19 | 20 | 21 | 18 | 19 | 21 | 20 | 18 |
Feels °C | 24 | 19 | 17 | 19 | 18 | 22 | 22 | 20 | 22 | 21 | 20 | 20 | 19 | 20 | 21 | 20 | 15 | 15 | 18 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 4 | N 5 | ESE 3 | W 19 | NNW 4 | — | N 5 | N 5 | — | E 3 | — | SW 6 | SW 9 | SW 8 | SW 7 | SW 7 | SW 6 | SW 6 | SSW 6 | SW 6 | SW 6 |
| kJ | 1 | 2 | 1 | 7 | 5 | — | 2 | 4 | — | 1 | — | 1 | 3 | 15 | 13 | 12 | 7 | 6 | 4 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 4 | W 15 | W 15 | — | SW 18 | W 14 | W 16 | SW 16 | SW 6 | SW 14 | SW 6 | — | W 12 | SW 12 | SW 13 | — | — | SW 11 | — |
| kJ | — | — | 1 | 4 | 4 | — | 12 | 4 | 5 | 10 | 2 | 8 | 1 | — | 3 | 6 | 6 | — | — | 5 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 18 | — | S 7 | S 6 | — | W 13 | — | SW 14 | SW 12 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 6 | — | 1 | 1 | — | 3 | — | 8 | 6 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | E 3 | NNE 3 | NNE 2 | ENE 3 | NNE 3 | NE 2 | E 3 | E 3 | — | ESE 3 | — | — | — | — | — | — | N 3 | NNW 4 | NNW 6 | NNW 5 |
| kJ | — | 3 | 1 | 1 | 2 | 1 | 1 | 5 | 1 | — | 2 | — | — | — | — | — | — | 5 | 17 | 65 | 39 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 343 | 345 | 410 | 255 | 248 | 133 | 113 | 254 | 306 | 189 | 335 | 200 | 113 | 189 | 308 | 308 | 133 | 306 | 495 | 60 | 70 |
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