Surf Forecasts:
Porth Ceriad surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 1AM (local time) - 2.5ft (0.8m), 5s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 1PM (local time) - 4.5ft (1.3m), 5s period, W swell with 92 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 1AM (local time) - 2.5ft (0.8m), 5s period with SW 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 Wednesday (Aug 05) at 1AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.4m and 7s. 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 1.3m 5s and forecast to arrive on Wednesday (Aug 05) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Thursday (Aug 06) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 5th Aug) | 2.5ft (0.8m) 5s |
| Best Surf | 1AM (Wed 5th Aug) | 2.5ft (0.8m) 5s |
| Most Powerful | 1PM (Wed 5th Aug) | 4.5ft (1.3m) 5s |
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 on the table for Porth Ceriad over the next couple of weeks.
Right off the bat, I gotta be straight with you – it’s a tough stretch. The first ten days or so are looking pretty grim, with the surf quality just not there. The water temp is sitting at 64°, which is much warmer than normal for this time of year, a solid 4° above average, so at least it’ll feel nice on the skin when you’re waiting for nothing.
We kick off on Tuesday, August 4th, with a weak 4ft SW swell, but it’s a short-period 6 seconds and the wind is a messy cross-on at 12 mph. The combined energy is only 75, so it’s pretty weak. That pattern of poor conditions just drags on. Wednesday the 5th sees a bit more size at 4ft from the west, but a fresh 22 mph cross-wind is just going to chop it up. Thursday the 6th offers a bit of a cleaner window with a WNW cross-off breeze, but the swell is tiny at 2ft.
We get a few moments of glassy conditions later on. Thursday afternoon, August 13th, the wind goes totally glassy, but the swell is a weak 4ft from the WSW with a period of just 5 seconds – the energy is only 59, so it’s real weak and fat. The only real standout, and I’m using that term loosely, is Friday morning, August 14th. The swell bumps up to 5ft from the WSW, with a combined energy of 198 (moderate wave energy), and the wind is glassy. That’s the best of the lot. It’s a 6-second period though, so it’ll be a bit lumpy and soft, but it’s the only time we get any size with clean conditions. This is a beginner-friendly break, and 5ft is well within range, but the short period won't give it much push.
There’s a gap of a few days of nothing really worthwhile until Monday morning, August 17th, when we get another glassy session with a 4ft SW swell, but again, the energy is only 96, so it’s on the weak side.
So, to be honest, there’s no real "best on offer" here. If you’re desperate for a paddle, aim for the 14th of August. It’s your best chance at a clean wave, even if it’s not going to be a classic. The rest of the time, it’s a waiting game.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Very mild (max 18°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the WNW on Wed night, calm by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sat afternoon, min 15°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | SW 6 | SW 7 | SW 5 | W 5 | W 5 | W 13 | SW 6 | WSW 6 | WSW 5 | SW 4 | SW 5 | WSW 5 | SW 4 | SW 5 | SW 5 | SW 7 | SW 7 | SW 6 | SW 6 | SW 3 | SW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 75 | 82 | 26 | 87 | 64 | 3 | 37 | 22 | 19 | 6 | 3 | 19 | 15 | 35 | 29 | 23 | 23 | 10 | 5 | 5 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross | cross | cross-off | cross-off | cross-on | glassy | cross-on | cross-on | on | on | cross-on | on | on | cross-on | on | off | off | glassy |
High Tide | 12:34PM3.84m | 00:54AM4.07m | 1:20PM3.66m | 1:44AM3.80m | 2:15PM3.45m | 2:46AM3.52m | 3:25PM3.28m | 4:04AM3.34m | 4:47PM3.30m | 5:27AM3.38m | 6:03PM3.53m | 6:38AM3.60m | 7:06PM3.90m | ||||||||
Low Tide | 7:17PM0.91m | 7:56AM0.87m | 7:54PM1.08m | 8:41AM1.07m | 8:50PM1.25m | 9:48AM1.25m | 10:25PM1.35m | 11:26AM1.31m | 00:15AM1.24m | 12:58PM1.15m | 1:37AM0.91m | 2:04PM0.85m | 2:37AM0.52m | ||||||||
 |  |  | | |  |  | |  | | | | | | | | | | | | | |
 | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | — | 9:06 | — | — | 9:04 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — |
mm | 1 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 15 | 17 | 16 | 14 | 15 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
Feels °C | 16 | 16 | 14 | 9 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 13 | 12 | 13 | 15 | 17 | 17 | 16 | 15 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | — | — | SW 7 | — | W 13 | W 13 | SW 6 | NW 5 | SW 5 | SW 4 | SW 5 | SW 12 | SW 11 | — | SW 8 | SW 7 | SW 7 | SW 6 | NW 4 | — | SW 5 |
| kJ | — | — | 15 | — | 3 | 3 | 37 | 19 | 14 | 5 | 3 | 5 | 5 | — | 2 | 23 | 23 | 10 | 3 | — | 23 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 13 | — | W 13 | W 12 | NNW 4 | NNW 3 | NW 4 | W 12 | — | — | SW 8 | — | — | — | SW 6 | — | — |
| kJ | — | — | — | — | 3 | — | 3 | 3 | 2 | 1 | 2 | 3 | — | — | 3 | — | — | — | 5 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 12 | SW 12 | W 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 6 | 6 | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 7 | SW 5 | W 5 | W 5 | W 5 | NW 5 | WSW 6 | WSW 5 | — | — | WSW 5 | SW 4 | SW 5 | SW 5 | NW 4 | NW 4 | — | SW 4 | SW 3 | — |
| kJ | 75 | 82 | 26 | 87 | 64 | 67 | 52 | 22 | 19 | — | — | 19 | 15 | 35 | 29 | 11 | 4 | — | 1 | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 307 | 0 | 494 | 460 | 532 | 126 | 303 | 316 | 307 | 303 | 303 | 303 | 377 | 143 | 125 | 307 | 290 | 364 | 334 | 298 |
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