Surf Forecasts:
Porth Ceriad surf forecast from 28 Jul 2026:
- Most powerful swell: Tuesday 4 Aug, 1PM (local time) - 2.5ft (0.8m), 8s period, SW swell with 78 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 0.8m 8s and forecast to arrive on Tuesday (Aug 04) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s 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 | 1PM (Tue 4th Aug) | 2.5ft (0.8m) 8s |
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 menu for the next couple of weeks.
Honestly, I gotta be straight with you – it’s a grim picture. The entire 16-day window is a dud. There’s no surf worth chasing, and that’s a long stretch of flat or blown-out conditions. We’re looking at a solid run of nothing from the start of the forecast right through to the 12th of August. It’s the kind of quiet spell that’s not unusual for this area, but it still stings.
The only break on the radar is Porth Ceriad. It’s a beginner-friendly, exposed spot that picks up a SW swell. The water’s sitting at 64°F which is much warmer than normal for this time of year, so that’s one small comfort – but it’s not gonna help the waves.
The first few days are a write-off. On Tuesday the 28th, we’ve got a tiny 4ft SW swell, but it’s short period at 5 seconds and a strong cross-on wind from the SSW at 15 mph is making it a choppy mess. The combined energy is weak (65), and the conditions are just poor. That theme continues all the way through the end of July and into the first week of August. The swell barely reaches 2ft most days, and when it does, the wind is either onshore or cross-onshore, keeping the surf ragged and uninviting.
There’s a tiny glimmer on the 3rd of August, Monday afternoon, when the wind drops to glassy. But with a swell of just 1ft at 9 seconds and a combined energy of only 20, it’s barely a ripple. Not worth wetting the wetsuit for.
The later part of the window, from the 7th of August onward, is even worse. Swell drops to 0.3ft or nothing, with long periods of 12 seconds on the 7th and 8th, but that’s just a long-period groundswell with no height. It’s dead flat. The wind on the 8th morning is glassy from the ENE, but again, there’s nothing to ride.
So, what’s the best on offer? There isn’t one. If you’re desperate for a paddle, the glassy moment on the 3rd of August might give you a few knee-high sliders, but that’s being generous. For the rest of the time, the consistent cross-on winds and tiny swell mean the setup at this beach-and-reef spot looks more interesting for a kite surfer than a traditional surfer. It’s a tough run, but forecasts can change, so keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Tue afternoon, min 14°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sun afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sun morning). | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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 | WSW 5 | SW 4 | SW 4 | SW 5 | W 4 | WSW 4 | WSW 5 | SW 5 | SW 3 | SW 5 | WSW 5 | NW 4 | SW 8 | SW 8 | SW 8 | W 11 | WSW 9 | SW 9 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 65 | 42 | 16 | 16 | 10 | 23 | 15 | 7 | 8 | 6 | 2 | 23 | 9 | 9 | 3 | 3 | 2 | 2 | 16 | 20 | 27 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | off | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-on | cross-on | cross-on | cross-off | cross | on | glassy | cross-on |
High Tide | 8:41PM3.85m | 8:59AM3.68m | 9:16PM4.07m | 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 | ||||||||
Low Tide | 3:28PM0.83m | 3:55AM0.66m | 4:02PM0.66m | 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 | ||||||||
 | |  |  | | |  | |  | | | | | | | | |  | | |  | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 | — | — | 9:09 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 17 | 18 | 17 | 18 | 18 | 16 | 14 | 16 | 17 | 14 | 15 | 16 | 14 | 15 | 15 | 18 | 19 | 18 | 18 | 19 | 18 |
Feels °C | 14 | 16 | 15 | 16 | 15 | 15 | 10 | 14 | 16 | 12 | 10 | 11 | 11 | 12 | 13 | 17 | 16 | 16 | 16 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 5 | WSW 5 | — | SW 5 | — | WSW 4 | WSW 5 | NW 4 | NW 4 | SW 5 | WSW 5 | NW 4 | — | SW 8 | SW 8 | SW 8 | WSW 9 | SW 9 | WSW 8 |
| kJ | — | — | 16 | 8 | — | 23 | — | 7 | 8 | 5 | 2 | 23 | 9 | 9 | — | 3 | 2 | 2 | 16 | 20 | 27 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 4 | — | SW 5 | — | W 11 | W 9 | SW 5 | SW 4 | — | — | W 11 | — | — | — |
| kJ | — | — | — | — | — | — | — | 5 | — | 6 | — | 2 | 2 | 3 | 1 | — | — | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | SW 8 | — | — | W 11 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | — | SW 4 | SW 4 | — | W 4 | — | — | — | SW 3 | NW 3 | NW 4 | — | — | — | — | — | — | — | — |
| kJ | 65 | 42 | — | 16 | 10 | — | 15 | — | — | — | 2 | 1 | 18 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 265 | 294 | 253 | 296 | 298 | 298 | 494 | 651 | 306 | 495 | 643 | 303 | 306 | 317 | 254 | 298 | 298 | 113 | 107 | 107 | 132 |
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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