Surf Forecasts:
Porth Ceriad surf forecast from 20 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 4AM (local time) - 2ft (0.6m), 6s period, WSW swell with 22 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 0.6m 6s and forecast to arrive on Sunday (Jul 26) at 4AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Jul 22) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 26th Jul) | 2ft (0.6m) 6s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Right folks, Rusty here. Gotta be straight with you – it’s a grim outlook for the next 16 days at Porth Ceriad. We’re looking at a long, dry spell with barely a ripple to get excited about.
We start off from Monday afternoon the 20th of July, and it’s dead flat. The water is a staggering 66°, which is much warmer than normal for this time of year – a real oddity, but not much use with no waves. The first week is a total write-off. We’ve got a whole week of poor surf conditions, with the odd bit of clean, glassy water on the Friday morning the 24th (swell energy a measly 3), but the swell is only 0.3 ft from the west with a period of 13 seconds. That’s a long period for a puddle – it’s groundswell, but there’s just no height to it. You’d be floating.
The pattern doesn’t change. Saturday the 25th brings a bit of onshore wind and a poor 2 ft short-period swell from the WSW, but the combined energy is only 11 – weak stuff. The following week is more of the same: tiny, inconsistent bumps from the SW and WSW, all under 2 ft. The wind is often offshore or clean, but it doesn’t matter when there’s nothing to ride. We even get a glassy morning on the 24th, but it’s still only 0.3 ft.
There is a slight uptick on the 2nd of August, a Sunday, with a 1 ft SW swell and combined energy creeping up to 10, but the wind is onshore and messy. By the 3rd and 4th, the wind gets gusty and strong, blowing 22 to 28 mph from the WSW – that’s kite-surfing weather, not paddle surfing. The setup is a beach break, so with that much wind and poor quality, it’s more interesting for the kite crowd than us.
Honestly, there’s no standout here. Not a single day worth paddling out for. The first week is a total gap, and the second week offers nothing but a few weak, choppy pulses. For a break that’s fairly consistent, this is a rare blank run. Forecasts can change, but right now, leave the board in the car.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the NNW on Mon afternoon, light winds from the N by Mon night). | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat afternoon. Very mild (max 19°C on Thu afternoon, min 14°C on Sat morning). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | W 8 | N 4 | NW 5 | NNW 4 | W 16 | NNW 5 | NNW 5 | N 4 | NNW 6 | NNW 4 | NNW 4 | W 13 | W 13 | — | W 12 | WSW 4 | SW 6 | SW 5 | SW 5 | WSW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 3 | 7 | 15 | 7 | 7 | 3 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | cross-off | off | off | cross-off | off | glassy | glassy | glassy | cross | cross-on | cross-off | off | cross-off | cross-off |
High Tide | 1:38AM3.80m | 2:07PM3.31m | 2:32AM3.43m | 3:07PM3.10m | 3:38AM3.13m | 4:19PM2.98m | 4:54AM2.99m | 5:31PM3.01m | 6:03AM3.01m | 6:32PM3.16m | 6:59AM3.15m | 7:22PM3.37m | ||||||||
Low Tide | 8:12PM0.93m | 8:49AM0.93m | 8:56PM1.18m | 9:34AM1.21m | 9:49PM1.39m | 10:30AM1.41m | 11:05PM1.51m | 11:50AM1.50m | 00:39AM1.48m | 1:12PM1.43m | 1:49AM1.31m | 2:08PM1.25m | 2:38AM1.09m | |||||||
 |  | | |  |  | | | | | | | |  |  |  |  | | | | |
 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:26 | — | — |
 | — | 9:30 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 2 | — | — | — |
Temp °C | 15 | 16 | 15 | 16 | 15 | 15 | 19 | 17 | 17 | 19 | 19 | 17 | 19 | 18 | 15 | 15 | 15 | 16 | 17 | 17 |
Feels °C | 9 | 13 | 12 | 12 | 11 | 11 | 14 | 14 | 14 | 16 | 17 | 16 | 18 | 17 | 11 | 13 | 13 | 11 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | — | NW 5 | — | W 16 | — | — | NW 4 | — | — | NNW 4 | — | WNW 3 | — | W 12 | NW 4 | SW 6 | SW 5 | SW 5 | WSW 5 |
| kJ | 1 | — | 1 | — | 5 | — | — | 4 | — | — | 4 | — | 1 | — | 3 | 1 | 15 | 7 | 7 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 13 | W 13 | — | — | W 12 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | — | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | N 4 | NNW 5 | NNW 4 | N 4 | NNW 5 | NNW 5 | N 4 | NNW 6 | NNW 4 | — | — | — | — | WSW 4 | WSW 4 | — | NW 3 | NW 3 | NW 3 |
| kJ | 23 | 11 | 9 | 18 | 23 | 49 | 59 | 20 | 24 | 17 | — | — | — | — | 3 | 7 | — | 2 | 4 | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 619 | 314 | 213 | 306 | 77 | 303 | 339 | 316 | 248 | 312 | 307 | 303 | 303 | 303 | 303 | 651 | 494 | 277 | 494 | 494 |
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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