Surf Forecasts:
Porth Ceriad surf forecast from 5 Jul 2026:
- Most powerful swell: Saturday 11 Jul, 1AM (local time) - 3ft (0.9m), 6s period, NW swell with 52 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 0.9m 6s and forecast to arrive on Saturday (Jul 11) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Saturday (Jul 11) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sat 11th Jul) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Porth Ceriad.
Straight up, I gotta be honest with you – it’s going to be a tough stretch. The whole 16-day window is looking pretty flat, and honestly, there’s no real surf to get excited about. We’re looking at a long dry spell here with almost nothing on offer.
We start off the first few days, Sunday July 5th through Tuesday July 7th, with tiny, weak dribbles. Swell heights are barely scraping 1 ft to 2 ft from the WSW and SW, with short, weak periods of 4 to 6 seconds. The wave energy is just pitiful, reading between 7 and 37 (weak). Winds are mostly cross or onshore, so conditions are messy and poor. The water’s a notable 64°, which is much warmer than normal for this time of year – over 5° warmer, so that’s very unusual, but it won't make up for the lack of waves.
Wednesday July 8th and Thursday July 9th go completely flat. The swell energy drops to zero. Even though we get some glassy conditions on the Wednesday morning and offshore breezes from the NNW on Thursday, there’s simply no swell to work with. That pattern of flatness and tiny leftovers carries right through the rest of the outlook.
From Friday July 10th all the way through to Monday July 20th, we’re looking at anemic 0.3 ft dribbles from the west, with periods that bounce all over the place. A couple of those later days, like Wednesday July 15th and Thursday July 16th, have glassy conditions in the morning or light offshore winds, and the swell period stretches out to 16 seconds and 13 seconds – that’s groundswell, but it’s so tiny it’s not doing anything. The combined energy never gets out of single digits (1 to 12), which is basically nothing.
So, when it's all said and done, there are no standouts here. Nothing is breaking consistently. The swell is just too small, and the energy too weak. The good news is, it tends not to stay this flat forever, and forecasts can change. But for now, leave the board in the van. It’s not worth the paddle.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun night, min 15°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Warm (max 24°C on Thu afternoon, min 13°C on Fri night). Winds increasing (calm on Wed night, strong winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
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 6 | WSW 4 | SW 4 | SW 4 | SW 5 | SW 4 | SW 4 | NW 4 | SW 4 | — | — | — | — | NW 3 | W 12 | W 11 | W 10 | NW 6 | W 4 | SW 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 35 | 6 | 18 | 5 | 8 | 16 | 4 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 2 | 52 | 3 | 3 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | glassy | cross-on | glassy | off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 12:18PM3.60m | 00:38AM3.97m | 1:02PM3.51m | 1:23AM3.85m | 1:52PM3.41m | 2:16AM3.70m | 2:52PM3.32m | 3:19AM3.57m | 4:02PM3.32m | 4:32AM3.54m | 5:13PM3.44m | 5:43AM3.64m | 6:18PM3.68m | ||||||||
Low Tide | 7:19PM0.97m | 7:58AM0.85m | 7:56PM1.09m | 8:39AM0.94m | 8:39PM1.19m | 9:26AM1.02m | 9:32PM1.27m | 10:24AM1.08m | 10:44PM1.28m | 11:38AM1.08m | 00:14AM1.18m | 1:00PM0.98m | 1:36AM0.93m | ||||||||
 | |  | | |  |  | | | | | | | | | | |  |  |  |  | |
 | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — |
 | — | — | 9:44 | — | — | 9:43 | — | — | 9:42 | — | — | 9:42 | — | — | 9:40 | — | — | 9:39 | — | — | 9:38 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 | 9 | 6 |
Temp °C | 17 | 17 | 18 | 16 | 17 | 18 | 16 | 18 | 17 | 19 | 20 | 20 | 22 | 24 | 21 | 21 | 21 | 16 | 13 | 13 | 13 |
Feels °C | 15 | 16 | 16 | 15 | 16 | 18 | 14 | 17 | 15 | 20 | 20 | 21 | 21 | 22 | 18 | 19 | 19 | 10 | 7 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | — | SW 5 | W 9 | SW 4 | — | — | SW 4 | NW 4 | SW 4 | — | — | — | — | — | — | NNW 4 | W 8 | NW 6 | W 4 | SW 8 | NNW 6 |
| kJ | — | 4 | 2 | 5 | — | — | 4 | 2 | 3 | — | — | — | — | — | — | 1 | 1 | 52 | 3 | 3 | 94 |
Swell 2 Height (m) Direction Period (s) | W 9 | NW 4 | — | NW 4 | — | — | NW 4 | WSW 4 | — | — | — | — | — | — | W 12 | — | W 10 | SW 8 | W 8 | — | W 8 |
| kJ | 2 | 1 | — | 1 | — | — | 3 | 2 | — | — | — | — | — | — | 3 | — | 2 | 3 | 1 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | W 9 | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | W 11 | — | — | NW 7 | — | — |
| kJ | — | 2 | — | — | — | — | — | — | 3 | — | — | — | — | — | — | 2 | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 4 | SW 4 | SW 4 | SW 5 | SW 4 | — | — | — | — | — | — | — | NW 3 | NNE 3 | — | NW 4 | — | NNW 6 | NNW 6 | — |
| kJ | 35 | 6 | 18 | 4 | 8 | 16 | — | — | — | — | — | — | — | 3 | 4 | — | 15 | — | 27 | 162 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 252 | 254 | 296 | 290 | 248 | 291 | 306 | 213 | 199 | 270 | 199 | 199 | 306 | 195 | 125 | 494 | 556 | 550 | 619 | 325 |
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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