Surf Forecasts:
Porth Ceriad surf forecast from 9 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 cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Jul 11) at 4AM.
| 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.
Alright folks, Rusty here. Let’s be straight with you – the outlook for Porth Ceriad over the next couple of weeks is about as flat as a pancake. I’m looking at a long stretch of tiny, barely-there waves, and honestly, for the vast majority of this 16-day window, there’s nothing that’s going to get a surfer out of bed. We’re talking a solid run of poor surf conditions from the get-go, all the way through the end of July. The combined swell energy is almost non-existent, and we’re seeing values as low as 1 or 2 (weak energy) for days on end. There’s a big gap of several days around the 20th to the 22nd of July where there’s absolutely no swell forecast at all.
The only flicker of hope comes right at the very end of the run. On Friday morning, the 24th of July, we finally see a change. The wind goes glassy – dead calm – and we’ve got a tiny 0.3ft swell rolling in from the west with a period of 12 seconds. That’s a long-period groundswell, which is a good sign for shape, but at that size, it’s barely a ripple. The combined energy is still a weak 3. The water temp is about average for this time of year, so nothing unusual there.
So, what’s the call? There’s no standout. The only time you’d even consider a paddle is that Friday morning. It’s a beginner-level wave if it breaks, and with the glassy conditions, it’ll be clean. But don’t expect much. The rest of the forecast is a write-off for surf. For now, the beach is a lovely place to sit, but the board can stay in the van.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri afternoon, min 14°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sat night. Warm (max 26°C on Sun afternoon, min 14°C on Sun night). Winds increasing (light winds from the ENE on Mon night, fresh winds from the NE by Tue afternoon). | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 | SW 4 | W 10 | W 10 | W 9 | W 8 | W 8 | ESE 3 | E 3 | N 4 | ESE 3 | ESE 3 | W 19 | W 15 | W 18 | SW 18 | E 3 | W 16 | SW 16 | E 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 3 | 1 | 0 | 3 | 2 | 7 | 4 | 6 | 12 | 8 | 6 | 10 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | off | cross-off | off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross |
High Tide | 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 | 9:25AM4.33m | 9:46PM4.77m | ||||||||
Low Tide | 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 | 4:27AM0.05m | 4:42PM0.26m | ||||||||
 | |  | | | |  | |  | | | | | |  |  | | |  | |  | |
 | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — |
 | — | — | 9:40 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 |
mm | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | 1 | 1 | 3 |
Temp °C | 18 | 20 | 21 | 23 | 24 | 22 | 23 | 24 | 24 | 22 | 26 | 23 | 21 | 26 | 22 | 22 | 25 | 25 | 20 | 26 | 23 |
Feels °C | 17 | 18 | 19 | 22 | 23 | 19 | 24 | 23 | 22 | 20 | 22 | 18 | 15 | 20 | 16 | 19 | 18 | 19 | 20 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | WSW 4 | WSW 4 | SW 4 | — | W 9 | W 9 | NNW 6 | W 8 | NNW 5 | NNW 4 | — | N 5 | — | — | NNW 5 | E 3 | — | N 5 | — | SW 16 | N 5 |
| kJ | 2 | 2 | 1 | — | 2 | 2 | 30 | 1 | 19 | 2 | — | 4 | — | — | 5 | 1 | — | 2 | — | 10 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 10 | W 10 | W 9 | W 8 | W 7 | W 8 | — | — | — | — | W 19 | W 15 | — | SW 18 | W 14 | W 16 | — | W 13 |
| kJ | — | — | — | 2 | 2 | 2 | 1 | 1 | 1 | — | — | — | — | 7 | 4 | — | 12 | 4 | 5 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 7 | — | W 6 | — | — | — | — | W 15 | — | W 18 | — | — | W 13 | W 13 | W 16 |
| kJ | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | 4 | — | 6 | — | — | 3 | 3 | 5 |
Wind waves Height (m) Direction Period (s) | — | NW 3 | NNW 3 | — | NNW 3 | NNW 4 | — | NNW 6 | ESE 3 | E 3 | N 4 | ESE 3 | ESE 3 | — | ENE 3 | — | — | E 3 | E 3 | E 3 | E 4 |
| kJ | — | 2 | 2 | — | 5 | 15 | — | 20 | 3 | 1 | 1 | 3 | 2 | — | 3 | — | — | 8 | 6 | 1 | 12 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 186 | 289 | 133 | 125 | 125 | 134 | 133 | 270 | 199 | 254 | 189 | 345 | 401 | 351 | 255 | 133 | 113 | 251 | 271 | 279 | 254 |
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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