Surf Forecasts:
Porth Ceriad surf forecast from 25 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 10AM (local time) - 4ft (1.2m), 5s period, W swell with 71 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 1.2m 5s and forecast to arrive on Sunday (Jul 26) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Jul 26) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Sun 26th Jul) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright folks, Rusty here with the straight story on Porth Ceriad.
Gotta be honest with you – this 16-day stretch is a total dud. We’ve got a massive gap of flatness starting right now. First up, Saturday July 25th, we’ve got a tiny 1ft swell with a cross-onshore breeze and a combined energy of only 5. It’s choppy and useless. That’s the whole story for the foreseeable. Sunday July 26th brings the biggest bump of the period – a 4ft swell from the west with clean wind, but the combined energy is still just 71, and it’s rated as poor surf conditions. That’s the high point, and it’s sad.
The whole first week drifts by with nothing but flat, clean but empty water. The water temp on that first Saturday was about 5° warmer than usual for this time of year, which is notable, but it doesn’t put any waves under you.
We get the best chance on Tuesday August 4th. A 1ft southwest swell with a period of 8 seconds, a clean offshore wind, and a combined energy of 23. That is the absolute standout, and it’s still a very weak, small wave. After that, it just fades back to flat, tiny dribble with a few long-period pulses on August 9th that offer nothing.
For a break that’s fairly consistent, this is a weird, dead run. The forecast is solid for the near term, so it’s not changing. The second week continues the same theme: clean conditions, no surf. This is kite territory for now.
Don’t get your hopes up. Check back in a week.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 18°C on Mon night, min 14°C on Sun night). Winds increasing (calm on Sat afternoon, fresh winds from the NW by Sun afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 20°C on Wed morning, min 17°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 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) | WSW 4 | WSW 4 | WSW 5 | W 5 | SW 6 | SW 6 | NW 5 | SW 4 | SW 5 | SW 5 | SW 5 | SW 4 | SW 4 | SW 4 | WSW 2 | W 6 | SW 5 | WSW 4 | SW 6 | WSW 5 | SW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 20 | 35 | 71 | 39 | 16 | 12 | 22 | 35 | 29 | 10 | 4 | 1 | 1 | 1 | 1 | 7 | 3 | 8 | 3 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | on | cross-on | glassy | cross-on | glassy | cross-off | cross-off | cross-off | off | off | off |
High Tide | 6:32PM3.16m | 6:59AM3.15m | 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 | ||||||||
Low Tide | 1:12PM1.43m | 1:49AM1.31m | 2:08PM1.25m | 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 | ||||||||
 |  |  |  | |  |  | | | | | | | | | | | | | | | |
 | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — |
 | — | — | 9:22 | — | — | 9:21 | — | — | 9:20 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 |
mm | — | 1 | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 17 | 17 | 15 | 17 | 18 | 19 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 20 | 19 | 19 | 16 |
Feels °C | 14 | 13 | 16 | 11 | 11 | 11 | 12 | 16 | 18 | 19 | 19 | 20 | 20 | 19 | 19 | 18 | 17 | 19 | 16 | 14 | 11 |
Swell 1 Height (m) Direction Period (s) | — | NW 4 | NW 4 | — | SW 6 | SW 6 | NW 5 | NNW 4 | — | — | SW 5 | SW 4 | SW 4 | SW 4 | — | — | NW 4 | WSW 4 | SW 6 | WSW 5 | SW 4 |
| kJ | — | 3 | 1 | — | 39 | 16 | 12 | 2 | — | — | 10 | 4 | 1 | 1 | — | — | 6 | 3 | 8 | 3 | 1 |
Swell 2 Height (m) Direction Period (s) | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | SW 5 | — | — | — | — |
| kJ | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 4 | WSW 5 | W 5 | NW 6 | NW 5 | WSW 4 | SW 4 | SW 5 | SW 5 | — | — | — | — | WSW 2 | WNW 4 | — | — | — | NW 3 | — |
| kJ | 5 | 20 | 35 | 71 | 43 | 33 | 12 | 22 | 35 | 29 | — | — | — | — | 1 | 11 | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 373 | 373 | 303 | 622 | 619 | 126 | 252 | 298 | 245 | 253 | 245 | 254 | 280 | 314 | 303 | 133 | 303 | 298 | 322 | 649 | 312 |
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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