Surf Forecasts:
Porth Ceriad surf forecast from 13 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 4s period and expected on Monday (Jul 13) at 7PM.
| 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, Rusty here.
Let’s be real: the next 16 days are looking pretty dead for a surf. Porth Ceriad is a nice beginner break, but we’re in a flat spell. The water is way warmer than usual for this time of year, sitting at 66°F – that’s a big anomaly, over 7°F warmer than average, so it feels like a bath. But that’s about the only thing happening.
We start off Monday the 13th with tiny 0.3ft swell from the SE, period of 4 seconds, and the combined energy is a measly 1 (weak). It’s clean, but there’s nothing to ride. Tuesday and Wednesday are the same story – 0.3ft, periods around 16-18 seconds, but the energy is still super low. Thursday morning the 16th goes glassy, but it’s still just 0.3ft of 14-second swell. Friday the 17th, we get a tiny 0.7ft pulse from the SSW, period drops to 7 seconds, energy at 5 – still flat. Saturday and Sunday, same thing, 0.3ft. The whole first week is a write-off.
Then we hit a real dead zone. From Monday the 20th through to Wednesday the 23rd, the combined energy sits at 0 for most of it. Onshore winds start to pick up, and the swell is totally gone. Thursday the 23rd afternoon finally shows a bit of life: 3ft from the SW, period of 4 seconds, but energy is only 31 and the wind is a messy cross-shore. Not worth paddling.
Friday the 24th is the closest we get to something. Morning shows 5ft from the SW, period of 6 seconds, and the combined energy hits 133 (moderate). That’s the biggest swell of the whole period. But the wind is cross-shore, making it lumpy. This is a beginner-friendly break, and 5ft is pushing the upper limit for learners, but with a short period and onshore wind, the quality is gonna be poor. It’s not great for paddle surfing, but that size and wind might actually be more interesting for a kite session.
After that, it fades fast. Saturday the 25th is small and clean with offshore wind, but only 1ft-2ft. Sunday the 26th is back to tiny, lumpy cross-shore junk. The last few days of the month are onshore and choppy, with nothing to offer.
So, for the whole 16 days, there’s no real standout. The only time we see any moderate energy is on the 24th, but it’s short-period and cross-shore, so it’s not a true surf highlight. If you’re desperate, you could try the 24th morning for a messier, bigger wave, but don’t expect much. Most of this window is flat, and the area is known for this kind of blank run, so it’s not a surprise.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed night, min 16°C on Mon morning). Winds decreasing (fresh winds from the NNE on Mon afternoon, light winds from the NNE by Wed morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 17°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | SE 4 | W 19 | W 15 | W 18 | SW 18 | E 3 | W 16 | SW 16 | ESE 4 | SW 14 | SW 14 | E 3 | SSW 7 | SSW 7 | SW 13 | SW 6 | SW 6 | SW 11 | W 11 | S 5 | NNW 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 7 | 4 | 6 | 12 | 5 | 5 | 10 | 10 | 8 | 8 | 6 | 5 | 6 | 6 | 1 | 1 | 5 | 2 | 1 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross | glassy | off | cross-off | glassy | cross-off | off | off | cross-off | cross-off | off | off | off |
High Tide | 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 | 11:43AM4.06m | 00:03AM4.51m | 12:29PM3.83m | 00:49AM4.19m | ||||||||
Low Tide | 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 | 6:44AM0.09m | 6:50PM0.46m | 7:26AM0.32m | 7:30PM0.68m | ||||||||
 | |  | | | | | | | | | |  | | | | | | | | | |
 | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — |
 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 24 | 23 | 23 | 25 | 25 | 24 | 26 | 27 | 23 | 24 | 22 | 22 | 24 | 22 | 18 | 21 | 20 | 19 | 20 | 20 |
Feels °C | 17 | 18 | 19 | 20 | 20 | 20 | 23 | 22 | 22 | 22 | 19 | 18 | 20 | 20 | 17 | 16 | 18 | 17 | 16 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 4 | W 19 | NNW 4 | W 18 | N 5 | NNW 5 | — | — | N 5 | ESE 3 | SW 6 | NNW 4 | ESE 3 | SSW 7 | SW 6 | NNW 4 | SW 6 | S 6 | NNW 4 | S 5 | NNW 3 |
| kJ | 1 | 7 | 5 | 6 | 2 | 7 | — | — | 2 | 1 | 1 | 3 | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | W 15 | W 15 | — | SW 18 | W 14 | W 16 | SW 16 | SW 7 | SW 6 | SW 14 | SSW 7 | SSW 7 | SW 12 | SW 13 | SW 6 | — | SW 11 | S 6 | — | — |
| kJ | — | 4 | 4 | — | 12 | 4 | 5 | 10 | 2 | 1 | 8 | 5 | 5 | 6 | 6 | 1 | — | 5 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 14 | — | — | W 13 | S 6 | W 13 | SW 14 | — | SW 12 | — | — | W 13 | — | — | — | W 11 | — | — |
| kJ | — | — | — | 4 | — | — | 3 | 1 | 3 | 8 | — | 6 | — | — | 3 | — | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | ENE 3 | NNE 2 | ENE 3 | NNE 3 | NNE 3 | E 3 | E 3 | — | ESE 4 | — | — | E 3 | — | NNW 3 | N 3 | — | NNW 4 | NNW 4 | — | NNW 3 | — |
| kJ | 2 | 2 | 2 | 2 | 1 | 5 | 4 | — | 10 | — | — | 5 | — | 5 | 4 | — | 7 | 4 | — | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 410 | 189 | 248 | 133 | 189 | 248 | 133 | 189 | 305 | 312 | 189 | 213 | 308 | 335 | 327 | 319 | 319 | 303 | 303 | 380 | 303 |
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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