Surf Forecasts:
Porth Ceriad surf forecast from 4 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 1PM (local time) - 4.5ft (1.4m), 6s period, W swell with 117 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 1.4m 6s and forecast to arrive on Wednesday (Aug 05) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Thursday (Aug 06) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 5th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on offer for Porth Ceriad over the next couple of weeks.
Honestly, it's a bit of a bleak stretch for this exposed southwest-facing beach. The water is currently sitting at 64° which is much warmer than normal for this time of year, a real anomaly. But that's about the only bright spot.
We kick off Tuesday, August 4th, with a weak 4ft SW swell, but it's short period junk at 6 seconds and a messy cross-on wind. The combined energy is a paltry 69 – just not enough push to overcome the chop. That theme sticks around for the first week. Wednesday the 5th sees a slightly bigger cross-shore wind and a pulse of 5ft windswell from the west, but the period is only 5 seconds and the wind is tearing it up. The energy hits 104, but it's all wind and no shape. For the rest of the week and into the weekend, we're looking at knee-high dribble with onshore winds. Thursday morning the 6th is the cleanest looking session with a cross-off breeze, but the swell is only 2ft and the energy is down to 41. It's a frustrating run.
There is a long gap here with no real surf to speak of. The next time we see anything remotely surfable is on Thursday, August 13th. A small 3ft swell from the WSW rolls in, and the morning is glassy. The period is a short 5 seconds, but the energy is 59, and the surf is described as "surfable but very ordinary." It's a small, clean wave for a beginner. The afternoon stays clean with a light cross-off breeze. That's your best bet for the whole outlook, and it's only a 1 out of 10. Saturday the 15th morning looks similar, with another glassy 3ft swell, but it gets blown out by the afternoon.
After that, it's back to the same story of small, weak, and wind-affected surf for the rest of the period. Strong winds and cross-shore chop dominate the final few days. There's just nothing to get excited about. For a spot that's fairly consistent, this is a dead run. A blank stretch like this happens, but it won't stay this way forever.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Very mild (max 18°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed morning, light winds from the NW by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sun afternoon, min 12°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 6 | SW 7 | SW 5 | W 5 | W 5 | W 13 | SW 6 | SW 6 | SW 5 | SW 4 | SW 5 | WSW 5 | SW 4 | SW 4 | SW 5 | SW 6 | SW 7 | SW 6 | SW 5 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 69 | 82 | 52 | 104 | 78 | 3 | 38 | 16 | 17 | 6 | 3 | 27 | 13 | 29 | 29 | 15 | 21 | 10 | 7 | 8 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | off | off | cross-off | cross |
High Tide | 12:34PM3.84m | 00:54AM4.07m | 1:20PM3.66m | 1:44AM3.80m | 2:15PM3.45m | 2:46AM3.52m | 3:25PM3.28m | 4:04AM3.34m | 4:47PM3.30m | 5:27AM3.38m | 6:03PM3.53m | 6:38AM3.60m | 7:06PM3.90m | ||||||||
Low Tide | 7:17PM0.91m | 7:56AM0.87m | 7:54PM1.08m | 8:41AM1.07m | 8:50PM1.25m | 9:48AM1.25m | 10:25PM1.35m | 11:26AM1.31m | 00:15AM1.24m | 12:58PM1.15m | 1:37AM0.91m | 2:04PM0.85m | 2:37AM0.52m | ||||||||
 |  |  | |  |  | | |  | | | | | | | | | | | | | |
 | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | — | 9:06 | — | — | 9:04 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — |
mm | 1 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 15 | 17 | 16 | 14 | 15 | 16 | 14 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 14 | 16 | 17 |
Feels °C | 16 | 14 | 15 | 8 | 11 | 10 | 10 | 12 | 14 | 12 | 13 | 14 | 12 | 12 | 13 | 15 | 17 | 18 | 9 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | — | — | SW 7 | — | NW 5 | W 13 | SW 6 | NNW 5 | SW 5 | SW 4 | SW 5 | SW 12 | SW 11 | W 11 | W 8 | SW 6 | SW 7 | SW 6 | SW 5 | SW 6 | NNW 4 |
| kJ | — | — | 12 | — | 25 | 3 | 38 | 17 | 17 | 5 | 3 | 5 | 5 | 2 | 1 | 15 | 21 | 10 | 7 | 8 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | W 13 | SW 6 | NNW 4 | NNW 3 | — | — | — | — | — | WSW 7 | W 12 | — | — | — | SW 6 |
| kJ | — | — | — | — | — | — | 3 | 16 | 2 | 1 | — | — | — | — | — | 5 | 3 | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 12 | SW 12 | SW 12 | W 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 6 | 6 | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 7 | SW 5 | W 5 | W 5 | WNW 5 | NW 5 | W 4 | — | — | — | WSW 5 | SW 4 | SW 4 | SW 5 | NW 3 | NW 4 | NW 3 | NW 5 | NW 5 | — |
| kJ | 69 | 82 | 52 | 104 | 78 | 80 | 49 | 15 | — | — | — | 27 | 13 | 29 | 29 | 1 | 4 | 5 | 37 | 17 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 307 | 143 | 494 | 494 | 460 | 308 | 303 | 316 | 303 | 303 | 303 | 303 | 317 | 254 | 138 | 1322 | 138 | 289 | 317 | 298 |
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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