Surf Forecasts:
Porth Ceriad surf forecast from 14 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 4PM (local time) - 0.5ft (0.1m), 16s period, SW swell with 10 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 16s and forecast to arrive on Wednesday (Jul 15) 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 1.2m 5s period and expected on Saturday (Jul 18) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Wed 15th Jul) | 0.5ft (0.1m) 16s |
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 – the next 16 days are a real struggle for waves around here.
We’re looking at a long, dry spell until the very end of the period. From now through the 26th of July, there’s just nothing to get excited about. We’re talking about 12 days of near-flat to tiny, poor surf. The swell energy is basically non-existent, with readings often in the single digits or low teens. The only positive is that for most of that time, the wind is offshore or light, keeping the water clean, but there’s just no power behind it. The water temperature is a notable 66°, which is about 7° warmer than usual for this time of year – a real surprise.
Things finally start to look a little less bleak on the 27th of July. Monday morning sees a bit of life, with a 4ft swell from the southwest, but the wind is a messy cross-onshore, and the energy is only moderate (120). The surface is choppy, so it’s not a great call. The afternoon of the 27th is the best we’ll see. Porth Ceriad gets a glassy, clean window with 4ft of southwest swell. The energy is starting to drop off (88), but those light, variable winds will make it look its best. It’s surfable, but very ordinary.
After that quick pulse, it’s back to onshore wind and dropping swell on the 28th and 29th, which is a write-off. The setup is looking more interesting for kite surfing than paddle surfing for the rest of the month. Hard luck this time.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 18°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Sat night). | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 18 | W 14 | W 16 | SW 16 | SW 6 | SW 14 | SW 14 | W 15 | W 12 | SW 12 | SW 13 | SW 6 | S 6 | SW 11 | W 11 | NNW 3 | NW 4 | W 9 | W 8 | W 8 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 4 | 5 | 10 | 2 | 8 | 8 | 6 | 3 | 6 | 6 | 1 | 1 | 5 | 2 | 0 | 0 | 2 | 1 | 1 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross | cross-off | off | cross-off | off | cross-off | off | off | cross-off | cross-off | glassy | cross-off | off | cross-off | off | off | glassy |
High Tide | 8:59PM4.59m | 9:25AM4.33m | 9:46PM4.77m | 10:12AM4.33m | 10:33PM4.82m | 10:58AM4.23m | 11:18PM4.74m | 11:43AM4.06m | 00:03AM4.51m | 12:29PM3.83m | 00:49AM4.19m | 1:15PM3.57m | 1:38AM3.80m | ||||||||
Low Tide | 4:27AM0.05m | 4:42PM0.26m | 5:14AM-0.07m | 5:26PM0.24m | 6:00AM-0.05m | 6:08PM0.31m | 6:44AM0.09m | 6:50PM0.46m | 7:26AM0.32m | 7:30PM0.68m | 8:08AM0.62m | 8:12PM0.93m | 8:49AM0.93m | ||||||||
 |  | | | | | | |  |  |  | | | | | | | | | | | |
 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 |
 | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:30 | 9:28 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 22 | 26 | 25 | 23 | 25 | 22 | 20 | 21 | 20 | 15 | 18 | 18 | 17 | 17 | 16 | 15 | 16 | 16 | 19 |
Feels °C | 21 | 21 | 22 | 22 | 21 | 22 | 21 | 18 | 17 | 17 | 16 | 10 | 14 | 16 | 16 | 14 | 11 | 11 | 12 | 13 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 18 | NNW 4 | — | — | N 4 | E 3 | SW 7 | SW 7 | NNW 4 | SW 6 | SW 6 | SW 6 | S 6 | N 6 | NNW 5 | — | NW 4 | W 9 | W 8 | W 8 | NNW 5 |
| kJ | 12 | 4 | — | — | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 23 | 5 | — | 3 | 2 | 1 | 1 | 15 |
Swell 2 Height (m) Direction Period (s) | — | W 14 | W 16 | SW 7 | N 3 | NW 4 | SW 14 | SW 12 | SW 6 | SW 12 | SW 13 | — | — | SW 11 | — | — | — | — | — | — | W 7 |
| kJ | — | 4 | 5 | 2 | 1 | 1 | 8 | 6 | 2 | 6 | 6 | — | — | 5 | — | — | — | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | W 14 | S 7 | — | SW 16 | SW 6 | SW 14 | W 8 | W 15 | W 12 | — | — | — | — | — | W 11 | — | — | — | — | — | — |
| kJ | 4 | 1 | — | 10 | 2 | 8 | 1 | 4 | 3 | — | — | — | — | — | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | E 3 | E 3 | — | E 3 | — | NNW 2 | N 4 | — | NW 4 | N 4 | NNW 4 | NNW 5 | — | E 3 | NNW 3 | NNE 3 | N 4 | NNW 4 | N 3 | — |
| kJ | — | 2 | 1 | — | 5 | — | 1 | 7 | — | 6 | 7 | 16 | 59 | — | 1 | 7 | 3 | 1 | 10 | 6 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 113 | 213 | 312 | 377 | 254 | 295 | 191 | 213 | 308 | 727 | 303 | 213 | 319 | 223 | 254 | 251 | 303 | 319 | 377 | 303 | 254 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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