Surf Forecasts:
Porth Ceriad surf forecast from 31 Jul 2026:
- Most powerful swell: Tuesday 4 Aug, 4PM (local time) - 2.5ft (0.7m), 7s period, SW swell with 54 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 0.7m 7s and forecast to arrive on Tuesday (Aug 04) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 01) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 4th Aug) | 2.5ft (0.7m) 7s |
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's cookin' for Porth Ceriad.
Alright, folks, I'm gonna be straight with you. We're looking at a pretty grim stretch ahead. The next 16 days are a proper write-off for anything decent. You're not gonna find a single standout session in the whole window. The energy just isn't there, and what little swell we get is mangled by the wind. There's a two-week gap from the start of the forecast right through to the middle of August where you'd be better off waxing your car than your board. Honestly, the data shows zero surf-able waves for the entire period, which is a bummer, but it happens. Don't chuck the wetsuit in the bin just yet, forecasts can always flick a switch.
The first few days, from Friday the 31st of July through to the end of the first week, are a total no-go. The swell is tiny, barely a ripple, and the wind is mostly cross or cross-onshore, so it's choppy and messy. The combined energy is pitifully low, reading "6" on Friday, struggling to get into double digits. Not worth paddling out for.
Moving into the second week, around the 6th of August, we get a bit of a clean-up with some cross-offshore breezes from the NW, but the swell is still anaemic, barely 1.0 ft. It's clean, sure, but there's no push behind it.
The only moment that even gets a second look is the morning of Saturday the 8th of August. The wind goes glassy, dead calm from the north, and the swell is a measly 2 ft from the SW with a period of 7 seconds. The combined energy is only 28. It's flat, but it's pretty. That's the best of a bad bunch, but it's not a call to action.
A few days later, the 12th of August goes glassy again in the morning, but the swell is down to 0.7 ft. It's a pond. The tail end of the window, around the 15th of August, sees a bit more wind but still a pathetic 2 ft swell. There's simply nothing to ride.
For a spot like this, a blank run like this isn't unheard of. But keep your eye on the charts, because the pattern can change. For now, the surf is a no-show.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 19°C on Sun afternoon, min 14°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 21°C on Mon morning, min 13°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the NNW by Wed night). | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | W 4 | SW 4 | WSW 5 | SW 5 | SW 5 | WSW 4 | SW 8 | SW 8 | WSW 10 | SW 9 | WSW 9 | SW 8 | SW 8 | SW 7 | SW 5 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 4 | 31 | 6 | 5 | 3 | 3 | 3 | 9 | 20 | 30 | 33 | 22 | 54 | 33 | 29 | 16 | 7 | 6 | 6 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | cross-on | cross-on | cross-on | off | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 10:06AM3.92m | 10:23PM4.38m | 10:40AM3.99m | 10:57PM4.42m | 11:15AM4.00m | 11:32PM4.39m | 11:53AM3.96m | 00:11AM4.27m | 12:34PM3.84m | 00:54AM4.07m | 1:20PM3.66m | 1:44AM3.80m | 2:15PM3.45m | 2:46AM3.52m | |||||||
Low Tide | 5:09PM0.50m | 5:38AM0.39m | 5:41PM0.53m | 6:12AM0.44m | 6:13PM0.62m | 6:46AM0.54m | 6:45PM0.75m | 7:20AM0.69m | 7:17PM0.91m | 7:56AM0.87m | 7:54PM1.08m | 8:41AM1.07m | 8:50PM1.25m | ||||||||
 | |  | | |  |  | | |  | |  | | | | | | | | |  | |
 | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — |
 | — | — | 9:13 | — | — | 9:12 | — | — | 9:09 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:02 |
mm | — | — | 1 | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 18 | 14 | 15 | 15 | 17 | 19 | 18 | 21 | 20 | 17 | 18 | 18 | 18 | 14 | 17 | 15 | 14 | 16 | 15 |
Feels °C | 11 | 11 | 13 | 12 | 13 | 13 | 16 | 15 | 15 | 19 | 15 | 16 | 18 | 17 | 15 | 8 | 12 | 12 | 10 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | — | NW 4 | WSW 5 | SW 5 | NW 4 | WSW 4 | WSW 3 | SW 8 | WSW 10 | SW 9 | WSW 9 | SW 8 | SW 8 | — | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | — | 2 | 31 | 6 | 2 | 3 | 1 | 3 | 9 | 20 | 30 | 33 | 22 | — | 13 | 29 | 16 | 7 | 6 | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | — | — | W 12 | W 10 | W 9 | SW 9 | SW 8 | — | — | — | — | — | — | — | — | — | W 13 | W 13 | W 13 | W 12 | NNW 4 |
| kJ | — | — | 3 | 2 | 2 | 3 | 3 | — | — | — | — | — | — | — | — | — | 3 | 3 | 3 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 12 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Wind waves Height (m) Direction Period (s) | W 4 | SW 4 | — | NW 4 | SW 5 | — | — | — | NE 3 | SE 3 | — | NW 3 | — | SW 7 | SW 5 | — | NNW 3 | — | NNW 3 | NNW 4 | — |
| kJ | 7 | 4 | — | 5 | 5 | — | — | — | 3 | 6 | — | 1 | — | 54 | 33 | — | 4 | — | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 339 | 643 | 339 | 306 | 317 | 298 | 298 | 298 | 113 | 107 | 138 | 125 | 296 | 296 | 254 | 317 | 273 | 294 | 303 | 317 | 318 |
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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