Surf Forecasts:
Porth Ceriad surf forecast from 28 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 10AM (local time) - 3.5ft (1.0m), 5s period, SW 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 1.0m 5s and forecast to arrive on Tuesday (Jul 28) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Aug 03) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Tue 28th Jul) | 3.5ft (1.0m) 5s |
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 cookin' for Porth Ceriad. Gotta be straight with you – this is a quiet spell. The forecast's showing a long stretch of tiny, weak swell with unfriendly winds, so don't expect much for a while.
We kick off Tuesday the 28th of July with a small 3ft SW swell, but the wind is howling cross-onshore at 15 mph, making it choppy and messy. The combined energy is weak (52), and it's just not worth paddling out. This pattern sticks around through Wednesday and Thursday – tiny waves, wind from the wrong direction, and all the energy readings are in the double digits, which is next to nothing. Friday the 31st of July and into the first weekend of August, the swell drops even more, with some days showing barely a ripple. The water temp is about average for this time of year, nothing to write home about.
There's a glimmer of hope on Sunday the 2nd of August morning – glassy conditions with a slight air, but the swell is a pathetic 0.7ft. You can't ride that. The following week is more of the same: tiny 0.3ft to 0.7ft swells, even with the occasional clean offshore wind, like on the 3rd and 6th of August. The energy is pitiful, never cracking triple digits. For a beach that's exposed to SW, we're just not getting any love.
The only real standout in this whole 16-day window is way out on Wednesday the 12th of August morning. The swell picks up to 2ft from the SW with a period of 8 seconds, and the wind finally goes offshore from the NNW at 12 mph. The combined energy climbs to 57 – still not huge, but it's the best we've seen. The conditions will be clean and moderate offshore. It's a long way off, so don't book the day off just yet, but it's the one session that might actually be worth a look. For a beginner spot, that swell size is fine, but it won't be anything special.
Overall, a long dry spell. The blank run from the 28th of July all the way to the 11th of August is almost two weeks of nothing. Keep an eye on that Wednesday the 12th, but don't hold your breath.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Mon night, min 14°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sun afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sat night). | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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 5 | SW 5 | WSW 5 | SW 4 | SW 4 | SW 5 | W 4 | WSW 5 | SW 5 | W 4 | SW 3 | WSW 5 | WSW 5 | NW 4 | SW 4 | WSW 4 | W 8 | SW 8 | SW 8 | WSW 8 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 52 | 38 | 15 | 14 | 10 | 17 | 18 | 10 | 11 | 0 | 6 | 39 | 9 | 2 | 4 | 2 | 1 | 3 | 3 | 7 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross-off | cross | cross-on | on | glassy | off | cross-off | cross | off | cross-off |
High Tide | 8:23AM3.51m | 8:41PM3.85m | 8:59AM3.68m | 9:16PM4.07m | 9:32AM3.82m | 9:49PM4.25m | 10:06AM3.92m | 10:23PM4.38m | 10:40AM3.99m | 10:57PM4.42m | 11:15AM4.00m | 11:32PM4.39m | 11:53AM3.96m | 00:11AM4.27m | |||||||
Low Tide | 3:28PM0.83m | 3:55AM0.66m | 4:02PM0.66m | 4:30AM0.51m | 4:35PM0.55m | 5:04AM0.42m | 5:09PM0.50m | 5:38AM0.39m | 5:41PM0.53m | 6:12AM0.44m | 6:13PM0.62m | 6:46AM0.54m | 6:45PM0.75m | ||||||||
 | |  |  | | |  | |  | | | | | | | | | | | |  | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 | — | — | 9:09 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 18 | 18 | 16 | 15 | 16 | 16 | 14 | 16 | 17 | 14 | 15 | 15 | 16 | 18 | 17 | 21 | 23 | 20 |
Feels °C | 15 | 15 | 15 | 15 | 15 | 16 | 10 | 13 | 13 | 11 | 11 | 12 | 11 | 12 | 13 | 15 | 15 | 13 | 19 | 19 | 20 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 5 | — | — | SW 5 | — | WSW 5 | SW 5 | — | NW 4 | WSW 5 | WSW 5 | NW 4 | SW 4 | NW 4 | SW 4 | NNW 3 | SW 8 | WSW 8 | WSW 8 |
| kJ | — | — | 15 | — | — | 17 | — | 10 | 11 | — | 2 | 39 | 9 | 2 | 4 | 4 | 1 | 1 | 3 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 4 | — | — | — | W 11 | W 9 | WSW 5 | NW 4 | WSW 4 | W 8 | SW 8 | — | — | SW 8 |
| kJ | — | — | — | — | — | — | — | 6 | — | — | — | 3 | 2 | 2 | 1 | 2 | 1 | 3 | — | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | W 8 | W 8 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | — | SW 4 | SW 4 | — | W 4 | — | — | W 4 | SW 3 | — | NW 4 | — | — | — | NW 4 | — | — | NNW 2 | NNE 3 |
| kJ | 52 | 38 | — | 14 | 10 | — | 18 | — | — | 9 | 6 | — | 5 | — | — | — | 2 | — | — | 1 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 265 | 280 | 253 | 296 | 339 | 298 | 638 | 533 | 303 | 305 | 535 | 341 | 550 | 404 | 298 | 312 | 306 | 298 | 317 | 317 | 186 |
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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