Surf Forecasts:
Porth Ceriad surf forecast from 8 Jul 2026:
- Most powerful swell: Tuesday 14 Jul, 4PM (local time) - 0.5ft (0.1m), 18s period, SW swell with 12 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 0.1m 18s and forecast to arrive on Tuesday (Jul 14) at 4PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Jul 10) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 14th Jul) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
G’day, Rusty here. Let’s be straight with you: it’s a flat spell and it’s gonna be a long one for Porth Ceriad. The whole 16-day window is a write-off for any proper surf. We’re looking at a big gap of quiet water right through.
Wednesday the 8th of July morning starts with a glassy sea, but zero swell. There’s no energy at all – combined swell energy is a big fat 0. The water’s sitting at 63°, which is a good 5° warmer than normal for this time of year, so that’s something to feel, but it won’t help the waves. The afternoon’s got a light cross-onshore breeze, still dead flat.
Thursday the 9th finally shows a tiny pulse: 0.3 ft from the SW with a 4-second period. That’s barely a ripple, combined energy of just 1. Morning has a light offshore from the NNW though, so it’s clean, but there’s nothing to surf.
Friday the 10th is more of the same – 0.3 ft, 10-second period in the morning, even weaker in the arvo with a 9-second period and combined energy of 4. Offshore wind in the morning keeps things glassy, but you’re waiting on nothing.
Saturday the 11th is practically identical: 0.3 ft, 8-second period, combined energy down to 1 and 2. Afternoon offshore is clean, but again, no wave.
Sunday the 12th morning is flat again – zero. Afternoon sees a 0.3 ft, 16-second period sneaking in, combined energy of 5. That long period is a groundswell signal, but at 0.3 ft it’s tease. Offshore wind keeps it clean, but there’s nothing to ride.
Monday the 13th brings 1 ft from the ESE with a 3-second period – combined energy 1. That’s junk. Afternoon has 0.3 ft, 19-second period, combined energy of 11. Still tiny.
Tuesday the 14th through Wednesday the 22nd is the same sad story – tiny 0.3 ft pulses, periods ranging from 5 to 19 seconds, combined energy never cracking 12. The wind is often offshore or cross-offshore, keeping the surface clean, but you can’t surf what isn’t there.
Thursday the 23rd of July has 0.3 ft from the W, 14-second period, combined energy of 5 to 8, but now the wind is onshore at 15-19 mph and there’s light rain and clouds. It’s choppy and ugly.
Honestly, mate, there isn’t a single standout in this outlook. No break worth highlighting. The whole 16 days is a flat, frustrating stretch. The only time there’s any swell, it’s too weak to ride. For a beginner-friendly spot like Porth Ceriad, it’s just bad timing. Keep the board in the car, wait for the next set of charts. Forecasts change, and it won’t stay like this forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri afternoon, min 16°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 24°C on Sat afternoon, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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 4 | WSW 5 | W 12 | W 10 | W 11 | W 9 | W 8 | W 8 | E 3 | NNW 4 | W 16 | E 3 | ESE 3 | W 19 | W 15 | W 18 | SW 18 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 1 | 2 | 3 | 2 | 2 | 2 | 1 | 1 | 5 | 0 | 5 | 2 | 1 | 7 | 4 | 6 | 12 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | off | cross-off | off | off | cross-off | off | off | off | cross-off | cross | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off |
High Tide | 2:52PM3.32m | 3:19AM3.57m | 4:02PM3.32m | 4:32AM3.54m | 5:13PM3.44m | 5:43AM3.64m | 6:18PM3.68m | 6:47AM3.84m | 7:16PM3.99m | 7:44AM4.06m | 8:09PM4.31m | 8:36AM4.23m | 8:59PM4.59m | ||||||||
Low Tide | 9:32PM1.27m | 10:24AM1.08m | 10:44PM1.28m | 11:38AM1.08m | 00:14AM1.18m | 1:00PM0.98m | 1:36AM0.93m | 2:09PM0.78m | 2:41AM0.60m | 3:06PM0.56m | 3:37AM0.29m | 3:56PM0.38m | |||||||||
 | |  |  | | | | |  | | |  | | | | | | | | | | |
 | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — |
 | — | — | 9:42 | — | — | 9:40 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:37 | — | — | 9:37 |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 17 | 18 | 20 | 20 | 23 | 24 | 21 | 23 | 24 | 23 | 20 | 23 | 21 | 18 | 21 | 20 | 20 | 24 | 23 |
Feels °C | 18 | 18 | 17 | 17 | 18 | 18 | 22 | 22 | 18 | 22 | 22 | 20 | 19 | 20 | 16 | 15 | 15 | 15 | 18 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | — | — | — | SW 4 | WSW 5 | SW 4 | W 10 | W 9 | W 9 | NNW 6 | W 8 | NNW 5 | NNW 4 | W 16 | N 3 | — | W 19 | N 4 | — | SW 18 | N 4 |
| kJ | — | — | — | 1 | 2 | 1 | 2 | 2 | 2 | 31 | 1 | 16 | 2 | 5 | 2 | — | 7 | 4 | — | 12 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 12 | — | W 11 | W 9 | — | W 7 | W 8 | — | — | — | — | W 15 | W 15 | W 18 | — | W 14 |
| kJ | — | — | — | — | — | 3 | — | 2 | 2 | — | 1 | 1 | — | — | — | — | 4 | 4 | 6 | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 8 | — | W 6 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 3 | NNW 3 | — | NNW 3 | N 4 | — | NNW 6 | E 3 | — | — | E 3 | ESE 3 | NNW 2 | ENE 3 | ESE 3 | NNW 3 | E 3 |
| kJ | — | — | — | — | 2 | 2 | — | 4 | 15 | — | 21 | 5 | — | — | 2 | 1 | 1 | 2 | 1 | 3 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 199 | 252 | 298 | 301 | 306 | 186 | 113 | 125 | 134 | 199 | 304 | 213 | 261 | 189 | 337 | 189 | 133 | 270 | 189 | 189 | 255 |
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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