Surf Forecasts:
Porth Ceriad surf forecast from 23 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 10AM (local time) - 3.5ft (1.1m), 5s period, W swell with 50 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 1.1m 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 1.0m 4s period and expected on Thursday (Jul 23) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Sun 26th Jul) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Right then, folks, Rusty here. Let’s have a look at what’s on the cards for Porth Ceriad.
Honestly, it’s a pretty grim start to the outlook. The first few days are a write-off, with either no swell at all or just tiny, sloppy waves that aren’t worth your time. The water is sitting at 66°F which is much warmer than usual for this time of year, but that’s about the only upside right now. We’re looking at a big gap of quiet days until we get to the afternoon of Saturday, the 1st of August.
That’s where the only real glimmer of hope shows up. On Saturday afternoon, a moderate swell comes in from the SW at 5ft, with a short period of 5 seconds. The combined energy is moderate (126). The wind is a fresh offshore breeze from the NNW, which will keep the surface clean. That’s your best chance to get wet, but the period is short, so don’t expect any world-class walls. It’s a beginner-friendly spot, and the offshore wind is a major positive.
There’s a tiny bit of action on the 7th of August, Friday morning, with a 2ft SW swell, but the wind is a messy cross-onshore, so it’s not worth getting excited about.
Overall, it's a lean run. The standout is that Saturday afternoon session on the 1st of August. If you’re desperate, that’s your window. For everything else, the forecast is just flat and poor.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat afternoon. Very mild (max 18°C on Thu afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu afternoon, light winds from the NW by Fri night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Tue afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the NW on Sun night, calm by Tue night). | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | NNW 5 | NNW 4 | N 3 | W 13 | W 13 | WSW 2 | WSW 4 | WSW 5 | WSW 4 | W 5 | SW 6 | SW 6 | WSW 6 | SW 6 | SW 4 | SW 4 | SW 4 | WSW 4 | — | WSW 3 | WSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 3 | 3 | 1 | 16 | 33 | 30 | 50 | 38 | 16 | 12 | 8 | 9 | 5 | 4 | 1 | 0 | 1 | 32 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | on | on | on | cross-on | on | glassy | cross-off | on |
High Tide | 4:19PM2.98m | 4:54AM2.99m | 5:31PM3.01m | 6:03AM3.01m | 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 | ||||||||
Low Tide | 10:30AM1.41m | 11:05PM1.51m | 11:50AM1.50m | 00:39AM1.48m | 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 | ||||||||
 | |  | | |  |  | |  |  |  | | | | | | | | | |  | |
 | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:30 | — | — |
 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:20 | — | — | 9:17 | — | — | 9:16 |
mm | — | — | — | — | — | — | 2 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 18 | 17 | 16 | 17 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 14 | 16 | 16 | 17 | 18 | 18 | 19 | 20 | 19 |
Feels °C | 12 | 14 | 14 | 14 | 16 | 15 | 11 | 14 | 14 | 11 | 12 | 12 | 12 | 13 | 13 | 16 | 18 | 17 | 18 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | — | — | NNW 5 | N 4 | NNW 4 | — | W 12 | NW 5 | — | WSW 7 | SW 6 | SW 6 | WSW 6 | NW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | — | — | WSW 5 |
| kJ | — | — | 2 | 2 | 2 | — | 3 | 3 | — | 5 | 38 | 16 | 12 | 5 | 9 | 4 | 4 | 1 | — | — | 32 |
Swell 2 Height (m) Direction Period (s) | — | — | N 5 | W 13 | W 13 | — | — | — | — | — | NW 5 | — | — | SW 6 | — | — | — | — | — | — | — |
| kJ | — | — | 1 | 3 | 3 | — | — | — | — | — | 20 | — | — | 8 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 4 | N 3 | — | — | WSW 2 | WSW 4 | WSW 5 | WSW 4 | W 5 | — | NW 4 | NW 5 | — | — | SW 4 | — | — | — | WSW 3 | — |
| kJ | 23 | 39 | 3 | — | — | 1 | 16 | 33 | 30 | 50 | — | 29 | 18 | — | — | 5 | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 254 | 1030 | 254 | 411 | 1565 | 404 | 373 | 373 | 139 | 443 | 1031 | 141 | 303 | 303 | 213 | 254 | 280 | 254 | 301 | 301 | 303 |
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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