Surf Forecasts:
Porth Ceriad surf forecast from 24 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 4AM (local time) - 3.5ft (1.0m), 6s period, WSW swell with 71 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 6s and forecast to arrive on Sunday (Jul 26) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Sunday (Jul 26) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 26th Jul) | 3.5ft (1.0m) 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 we've got for the next couple of weeks. To be straight with you, it's a tough run. We're staring down a long stretch of tiny, weak, and mostly messy surf. The first real green light for anything rideable doesn't show up until early August, and even then, it's not exactly firing. There's a big gap of nothing doing for the better part of a week and a half.
We kick off this Friday, the 24th of July, with practically nothing – just a tiny 0.3ft swell out of the west, and the water temp is a very unusual 66°, which is much warmer than normal for this time of year. The energy is almost non-existent (6). Saturday the 25th sees a bit more size but with onshore gunk, so forget about it. This pattern of small, crummy surf stretches all the way through the 31st of July. You'll see the odd pulse of swell, like the 3ft from the west on the 26th with a clean cross-offshore wind, but it's just not enough to get stoked about.
The first date that even raises an eyebrow is the 4th of August. Tuesday morning and afternoon see the combined energy jump to moderate levels (143 and 123), with a 4ft to 4ft swell from the southwest. The wind is light and cross-onshore, which isn't perfect, but at least there's some power in the water. The period is short (6 to 8 seconds), so it'll be a bit lumpy and disorganised, but Porth Ceriad will finally have something to push you down the line. That's pretty much it for the whole 16-day window, just that one little spike.
After that, it drops back to tiny, wind-affected junk for the rest of the run. A bit of energy shows up on the 3rd with a 51, but nothing that’ll get the heart racing.
So, the only real standout, and I’m saying this with caution, is Porth Ceriad on Tuesday, the 4th of August. The swell is a modest 4ft to 4ft out of the southwest, giving you a little push. The water is still warm, and the light breeze keeps it from being totally blown out. It's not a classic, but it's the only window with any decent wave energy (143) on offer. Don't expect perfection, but it's the best bet in a pretty barren spell.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 17°C on Sat night, min 14°C on Sun night). Winds increasing (light winds from the NW on Fri afternoon, fresh winds from the WNW by Sat night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Tue morning, min 15°C on Mon afternoon). Wind will be generally light. | |||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 13 | — | WSW 4 | WSW 4 | WSW 5 | W 5 | SW 6 | SW 6 | NW 5 | WSW 4 | WSW 4 | SW 5 | SW 5 | WSW 4 | SW 4 | WSW 4 | WSW 4 | — | SW 4 | SW 3 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3 | 0 | 4 | 32 | 33 | 46 | 38 | 16 | 17 | 7 | 13 | 24 | 10 | 7 | 3 | 1 | 1 | 0 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-on | on | on | on | on | on | on | cross-on | on | off | cross-off | off |
High Tide | 5:31PM3.01m | 6:03AM3.01m | 6:32PM3.16m | 6:59AM3.15m | 7:22PM3.37m | 7:44AM3.33m | 8:04PM3.61m | 8:23AM3.51m | 8:41PM3.85m | 8:59AM3.68m | 9:16PM4.07m | 9:32AM3.82m | 9:49PM4.25m | |||||||
Low Tide | 00:39AM1.48m | 1:12PM1.43m | 1:49AM1.31m | 2:08PM1.25m | 2:38AM1.09m | 2:51PM1.04m | 3:18AM0.86m | 3:28PM0.83m | 3:55AM0.66m | 4:02PM0.66m | 4:30AM0.51m | 4:35PM0.55m | ||||||||
 |  |  |  |  | | |  | | | |  | | | | | | | | | |
 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — |
 | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:20 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 |
mm | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 17 | 16 | 17 | 17 | 14 | 17 | 17 | 18 | 18 | 18 | 17 | 18 | 18 | 17 | 18 | 17 |
Feels °C | 15 | 14 | 12 | 12 | 16 | 11 | 12 | 13 | 11 | 15 | 17 | 17 | 17 | 18 | 17 | 17 | 18 | 15 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | W 13 | — | — | — | — | — | SW 6 | SW 6 | NW 5 | NW 4 | WSW 4 | WSW 5 | WSW 5 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | — | SW 4 | — |
| kJ | 3 | — | — | — | — | — | 38 | 16 | 17 | 5 | 13 | 15 | 8 | 7 | 3 | 1 | 1 | — | 1 | — |
Swell 2 Height (m) Direction Period (s) | W 13 | — | — | — | — | — | NW 5 | — | SW 6 | WSW 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | 21 | — | 5 | 3 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | — | WSW 4 | WSW 4 | WSW 5 | W 5 | W 5 | NW 5 | WSW 4 | WSW 4 | — | SW 5 | SW 5 | — | SW 4 | — | — | — | — | SW 3 |
| kJ | 2 | — | 4 | 32 | 33 | 46 | 25 | 25 | 8 | 7 | — | 24 | 10 | — | 3 | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1040 | 303 | 1032 | 373 | 303 | 643 | 494 | 126 | 252 | 303 | 195 | 255 | 303 | 298 | 304 | 494 | 304 | 317 | 510 | 327 |
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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