Surf Forecasts:
Porth Ceriad surf forecast from 11 Jul 2026:
- Most powerful swell: Tuesday 14 Jul, 4PM (local time) - 0.5ft (0.1m), 18s period, SW swell with 12 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 0.1m 18s and forecast to arrive on Tuesday (Jul 14) at 4PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Jul 11) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 14th Jul) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Alright folks, Rusty here. Let me break down the outlook for Porth Ceriad.
Right from the start, we’re staring at a big, dry gap. There is absolutely nothing doing from now through Monday the 20th. It’s flat, or at best tiny little dribbles that aren't worth paddling out for. You’re waiting over a week for anything to show.
Things finally try to kick off around Tuesday the 21st. We get a small pulse of swell, about 3ft out of the WSW, with a period of just 6 seconds – short-period wind swell, not a proper groundswell. The combined energy is a measly 60. The morning has clean, gentle offshore wind from the N, making it rideable for beginners, but the conditions are described as very ordinary. It’s a soft start, not a standout.
We roll into Friday the 24th, and the afternoon brings a bit more hope. The swell picks up to 5ft from the SSW, with the combined energy hitting 100. It’s clean with light offshore wind, and again, it’s described as surfable but very ordinary. It’s the best looking wave of the run so far.
Then we get Saturday the 25th – the big one for size. Swell jumps to 7ft from the W, building to 8ft from the WNW later in the day. The combined energy is strong, hitting an impressive 366 then 524. That’s a lot of juice. But here’s the catch: the wind is howling cross-onshore from the WSW and SW, making it lumpy and choppy. For a beach-and-reef setup like Porth Ceriad, that's going to be a messy, blown-out mess. This one is strictly for experts, and honestly, with that onshore wind, it’s probably going to be more fun for the kite surfers than the paddle crew.
There’s no proper standout session here. The 25th has the muscle, but the wind ruins it. The afternoon of the 24th offers the best combo of size and clean conditions, but it’s still very average.
One thing to note on that first Tuesday the 21st: the water is sitting at 64°, which is 6° warmer than average for this time of year. That’s a weird and unusual warmth for this spot.
Rusty out.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 15°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Wed night. Warm (max 28°C on Tue afternoon, min 18°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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) | W 8 | W 8 | E 3 | NNW 5 | NW 4 | E 3 | E 3 | W 19 | W 15 | W 18 | SW 18 | E 3 | W 16 | SW 16 | W 13 | SW 14 | SW 14 | SW 12 | W 12 | SW 12 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 2 | 0 | 1 | 3 | 3 | 7 | 4 | 6 | 12 | 5 | 5 | 10 | 3 | 8 | 8 | 6 | 3 | 6 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-on | cross-off | cross-off | off | off | cross-off |
High Tide | 6:18PM3.68m | 6:47AM3.84m | 7:16PM3.99m | 7:44AM4.06m | 8:09PM4.31m | 8:36AM4.23m | 8:59PM4.59m | 9:25AM4.33m | 9:46PM4.77m | 10:12AM4.33m | 10:33PM4.82m | 10:58AM4.23m | 11:18PM4.74m | ||||||||
Low Tide | 1:00PM0.98m | 1:36AM0.93m | 2:09PM0.78m | 2:41AM0.60m | 3:06PM0.56m | 3:37AM0.29m | 3:56PM0.38m | 4:27AM0.05m | 4:42PM0.26m | 5:14AM-0.07m | 5:26PM0.24m | 6:00AM-0.05m | 6:08PM0.31m | ||||||||
 | |  | | | | | | | | |  |  |  |  |  |  |  |  | | | |
 | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — |
 | — | — | 9:38 | — | — | 9:37 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | 1 | 1 | 7 | — | — | — |
Temp °C | 23 | 25 | 25 | 24 | 28 | 24 | 21 | 25 | 24 | 23 | 28 | 25 | 23 | 26 | 24 | 20 | 22 | 19 | 19 | 21 | 18 |
Feels °C | 23 | 23 | 23 | 22 | 24 | 19 | 17 | 20 | 19 | 22 | 26 | 20 | 23 | 24 | 23 | 20 | 22 | 19 | 18 | 20 | 16 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 8 | NNW 5 | NNW 5 | NW 4 | N 5 | N 3 | — | N 5 | N 3 | N 5 | NNW 5 | — | SW 7 | NNW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | 1 | 1 | 15 | 2 | 1 | 2 | 1 | — | 8 | 1 | 2 | 2 | — | 2 | 4 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | — | — | — | SE 4 | N 6 | W 15 | — | SW 18 | W 14 | W 16 | SW 16 | SW 7 | NW 5 | — | — | — | SW 12 | SW 13 |
| kJ | 1 | 1 | 1 | — | — | — | 1 | 1 | 4 | — | 12 | 4 | 5 | 10 | 2 | 1 | — | — | — | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | W 8 | — | W 8 | — | — | — | — | W 19 | — | W 18 | — | S 6 | S 6 | W 13 | W 13 | SW 14 | SW 14 | SW 12 | W 12 | W 7 | — |
| kJ | 1 | — | 1 | — | — | — | — | 7 | — | 6 | — | 1 | 1 | 3 | 3 | 8 | 8 | 6 | 3 | 1 | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | E 3 | — | — | E 3 | E 3 | N 3 | ENE 3 | ENE 3 | ENE 2 | E 3 | E 3 | — | E 3 | ESE 2 | — | SSW 3 | — | — | — |
| kJ | 14 | 16 | 2 | — | — | 3 | 3 | 1 | 3 | 1 | 1 | 5 | 1 | — | 1 | 1 | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 213 | 261 | 213 | 254 | 189 | 345 | 401 | 379 | 254 | 133 | 113 | 254 | 189 | 189 | 308 | 308 | 410 | 277 | 339 | 643 | 277 |
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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