Surf Forecasts:
Porth Ceriad surf forecast from 21 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 4AM (local time) - 3.5ft (1.0m), 6s period, WSW swell with 88 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-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Monday (Jul 27) at 4AM.
| 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 be straight with you – this outlook is a tough one. We’re looking at Porth Ceriad, and honestly, there’s a proper dry spell coming up. The first surf recommendation doesn’t pop up until the very end of the period, and before that, there’s a long stretch of nothing worth paddling out for.
For the first two weeks, from Tuesday the 21st right through to the end of July, it’s all flat or tiny, wind-battered slop. The combined energy of all swells is sitting at zero most days, barely tickling a few points in the single digits. Even when a little 1ft to 3ft bump tries to show up, the wind is swinging cross-on or cross-off, keeping it messy and weak. A few mornings early on have clean offshore winds, but with no swell to ride, it’s just a session of sitting on your board. You’d be better off checking the kite forecast around here, because the wind is the only thing with any real energy.
Then we hit August. The first week of August is more of the same: flat or tiny, with the breeze making it a write-off. The combined energy never gets past 8, and the swell is barely a ripple. It’s a proper blank run for the area – not unusual, but frustrating.
Finally, we get a tiny glimmer. On the 5th of August, Wednesday morning, there’s a faint pulse. It’s 0.3ft of swell from the southwest, with a period of 7 seconds, and a light cross-onshore breeze from the west-southwest. The combined energy is a measly 2, so it’s not exactly a classic. But the wind is light, so it might be clean enough for a beginner to get a few ankle-biters on a foamie. It’s the only green light in the whole 16-day window, so if you’re desperate, that’s your moment.
Stay patient. Forecasts can change, and it tends not to stay this poor for long.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 11°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sat afternoon. Very mild (max 19°C on Thu night, min 14°C on Sat morning). Winds increasing (calm on Thu night, fresh winds from the SW by Sat afternoon). | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | NNW 5 | NNW 4 | W 16 | NW 6 | NNW 5 | N 4 | NNW 6 | NNW 4 | NNW 4 | W 13 | W 13 | — | WSW 4 | WSW 4 | WSW 6 | SW 6 | WSW 6 | SW 6 | WSW 5 | NW 5 | W 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 4 | 13 | 39 | 39 | 32 | 8 | 18 | 21 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | off | off | off | off | cross-off | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off |
High Tide | 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 | 7:44AM3.33m | 8:04PM3.61m | ||||||||
Low Tide | 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 | 2:51PM1.04m | 3:18AM0.86m | |||||||
 | |  |  | | | | |  | | |  |  | |  |  | | | | | | |
 | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:20 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 1 | — | — | — | — | — | — |
Temp °C | 14 | 16 | 14 | 15 | 19 | 17 | 17 | 19 | 19 | 17 | 18 | 18 | 15 | 16 | 16 | 16 | 17 | 17 | 15 | 17 | 17 |
Feels °C | 11 | 12 | 10 | 11 | 15 | 14 | 15 | 16 | 17 | 16 | 16 | 16 | 9 | 10 | 12 | 12 | 14 | 13 | 12 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | N 5 | — | W 16 | NW 6 | — | NW 4 | — | — | NNW 4 | — | — | — | W 12 | — | — | SW 6 | WSW 6 | SW 6 | WSW 5 | NW 5 | NNW 4 |
| kJ | 1 | — | 5 | 2 | — | 4 | — | — | 2 | — | — | — | 3 | — | — | 39 | 32 | 8 | 18 | 21 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 13 | W 13 | — | — | — | — | — | — | — | — | NNW 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 4 | N 4 | NNW 5 | NNW 5 | N 4 | NNW 6 | NNW 4 | — | — | — | — | WSW 4 | WSW 4 | WSW 6 | NW 4 | NW 5 | NW 5 | NW 5 | WSW 5 | W 3 |
| kJ | 8 | 22 | 18 | 49 | 56 | 13 | 17 | 10 | — | — | — | — | 4 | 13 | 39 | 31 | 21 | 49 | 83 | 10 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 253 | 983 | 77 | 303 | 339 | 307 | 248 | 312 | 298 | 411 | 651 | 385 | 303 | 643 | 914 | 141 | 494 | 139 | 306 | 290 | 373 |
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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