Surf Forecasts:
Porth Ceriad surf forecast from 30 Jul 2026:
- Most powerful swell: Monday 3 Aug, 10AM (local time) - 1.5ft (0.4m), 9s period, WSW swell with 31 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 9s and forecast to arrive on Monday (Aug 03) 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 0.6m 4s period and expected on Thursday (Jul 30) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 3rd Aug) | 1.5ft (0.4m) 9s |
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 around Porth Ceriad. To be straight with you, the whole 16-day window is looking pretty flat. The combined energy of all swells directed here is mostly below 100 (single digits and low teens), which is weak. There’s a tiny bump of energy around the 3rd of August with a reading of 31 (at its peak), but even that’s still weak and the wave comment says “poor surf conditions.” Honestly, there’s nothing here that’s going to get a surfer out of bed.
We start with Thursday the 30th of July. The swell is tiny, only 1 ft from the SW with a short period of 5 seconds. The wind is cross-off from the NNW at 12 mph, so it’s clean, but there’s no wave energy to work with. The combined energy is just 6. That’s a skunk session.
The pattern stays the same right through. Friday the 31st, Saturday the 1st of August, Sunday the 2nd – all with swell heights under 2 ft and periods of 4 to 8 seconds. The wind is often light or cross-off, which would be nice if there were any waves. Even the 3rd of August, which has the best combined energy of the whole window at 31, only offers 1 ft of swell from the WSW with a 9 second period. That’s just not enough to push through.
The entire rest of the outlook through to Friday the 14th of August is the same story. Tiny swell, with heights never exceeding 2 ft, and most days below 1 ft. The combined energy drops back to single digits or low tens. The wind is often clean or even glassy, but it doesn’t matter. There is no surfable wave energy.
The bottom line is this: there are no good surf options at Porth Ceriad in the entire 16-day window. It’s a flat spell. For a spot that’s fairly consistent, this is a notable blank run. It tends not to stay poor for long around here, and forecasts can change, but right now, you’re better off finding something else to do.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 18°C on Fri night, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Warm (max 21°C on Mon afternoon, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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 5 | SW 5 | SW 4 | W 4 | SW 4 | SW 5 | SW 5 | SW 5 | WSW 4 | WSW 4 | SW 8 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 7 | W 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 3 | 1 | 0 | 4 | 23 | 7 | 3 | 3 | 3 | 3 | 17 | 31 | 28 | 17 | 15 | 9 | 8 | 7 | 8 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross | cross-on | cross-off | cross-off | cross-on | glassy | cross-off | off | off | cross-off | cross-off | cross-off | cross | off | cross | cross-on | cross | off |
High Tide | 9:32AM3.82m | 9:49PM4.25m | 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 | |||||||
Low Tide | 4:30AM0.51m | 4:35PM0.55m | 5:04AM0.42m | 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 | |||||||
 | |  | |  |  | | |  | |  | | | |  | | | |  | | | |
 | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — |
 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 | — | — | 9:09 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 3 | — | — | 2 | 3 | — | 2 |
Temp °C | 15 | 16 | 16 | 14 | 16 | 18 | 14 | 15 | 15 | 17 | 19 | 18 | 17 | 21 | 17 | 16 | 18 | 16 | 15 | 16 | 15 |
Feels °C | 11 | 13 | 15 | 11 | 12 | 14 | 12 | 14 | 13 | 16 | 16 | 15 | 13 | 18 | 14 | 14 | 16 | 13 | 14 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 5 | SW 4 | — | NW 4 | SW 5 | SW 5 | NW 4 | WSW 4 | WSW 4 | SW 8 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 |
| kJ | 6 | 3 | 1 | — | 2 | 23 | 7 | 2 | 3 | 1 | 3 | 17 | 31 | 28 | 17 | 15 | 9 | 8 | 7 | 7 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 12 | W 10 | SW 5 | SW 9 | SW 8 | — | NNW 4 | NW 4 | NNW 4 | — | NW 5 | — | — | — | W 13 | W 13 |
| kJ | — | — | — | — | — | 3 | 2 | 3 | 3 | 3 | — | 3 | 4 | 1 | — | 1 | — | — | — | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 4 | — | W 4 | SW 4 | — | NW 4 | — | — | — | — | — | — | ENE 2 | ENE 3 | NE 3 | NE 3 | ENE 3 | E 3 | E 3 | ESE 3 |
| kJ | 4 | 5 | — | 8 | 4 | — | 4 | — | — | — | — | — | — | 1 | 3 | 2 | 2 | 3 | 4 | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 494 | 533 | 298 | 306 | 317 | 317 | 382 | 317 | 298 | 301 | 133 | 125 | 107 | 189 | 133 | 308 | 262 | 319 | 360 | 318 | 295 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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