Surf Forecasts:
Porth Ceriad surf forecast from 4 Jul 2026:
- Most powerful swell: Saturday 4 Jul, 4PM (local time) - 4ft (1.2m), 5s period, WSW swell with 69 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 1.2m 5s and forecast to arrive on Saturday (Jul 04) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Saturday (Jul 11) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 4th Jul) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let’s cut through it. I’m looking at Porth Ceriad and, honestly, the surf is a struggle. The whole 16-day run looks pretty grim. Let’s not kid ourselves.
We start in a rough patch. Right out of the gate, from Friday the 3rd we’ve got a tiny 2ft SW windswell, but that 15 mph cross-on wind is just mangling it. It’s choppy and messy. The water temp is sitting at 64° – which is over 6° warmer than usual for this time of year, so the water feels really warm, but it doesn't make the waves any better.
Saturday the 4th is not much to look at either. We get a tiny bump to 3ft from the WSW on the morning, pushing 4ft in the afternoon, but those winds are fresh and strong at 18 to 22 mph – cross-on all day. It’s lumpy, ugly, and just not worth paddling out for.
The whole first week into the second week is pretty much a write-off. There’s a window late on Tuesday the 8th and Wednesday the 9th where things go glassy and clean with that 0.7ft to 0.3ft swell, but that’s barely a ripple. You could probably paddle around, but you’re not catching anything worth mentioning. It is dead.
From the 10th out to the 18th of July, the swell energy is pathetic, mostly registering only single-digit or very low two-digit energy numbers (like 1 or 8, weak stuff). There’s a few windows of clean, glassy water, like Tuesday the 14th afternoon and Wednesday the 15th morning, but the swell is 0.3ft to 1ft max. That’s not surfing, that’s floating.
Honestly, Porth Ceriad is an exposed spot, and it likes a good SW swell to get going. But there’s no energy in the water for the entire period. The combined swell energy never even hits moderate (the highest is 53 on Saturday afternoon the 4th), and that was with bad wind. The set-up looks way more interesting for a kite surfer than a paddle surfer when there’s that much wind and little to no wave. Nobody’s getting barreled here.
Don’t let a blank run like this get you down. This area can spit out a swell pretty quick, and forecasts change. Today, though, leave the board at home.
Rusty
Short Range ForecastMostly dry. Warm (max 20°C on Sat afternoon, min 15°C on Fri night). Winds decreasing (fresh winds from the SW on Sat morning, light winds from the SW by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 17°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
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) | WSW 6 | WSW 5 | WSW 5 | WSW 6 | SW 5 | SW 4 | SW 5 | SW 5 | WSW 4 | SW 4 | SW 4 | WSW 4 | WSW 4 | SW 4 | — | W 11 | — | — | — | — | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 47 | 69 | 36 | 25 | 6 | 15 | 13 | 6 | 13 | 5 | 3 | 6 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | on | cross-on | cross-on | on | cross-off | on | on | cross-on | glassy | glassy | cross | glassy | off | cross-off | cross | cross-off | cross |
High Tide | 11:38AM3.67m | 11:57PM4.06m | 12:18PM3.60m | 00:38AM3.97m | 1:02PM3.51m | 1:23AM3.85m | 1:52PM3.41m | 2:16AM3.70m | 2:52PM3.32m | 3:19AM3.57m | 4:02PM3.32m | 4:32AM3.54m | 5:13PM3.44m | ||||||||
Low Tide | 6:42AM0.70m | 6:43PM0.85m | 7:20AM0.77m | 7:19PM0.97m | 7:58AM0.85m | 7:56PM1.09m | 8:39AM0.94m | 8:39PM1.19m | 9:26AM1.02m | 9:32PM1.27m | 10:24AM1.08m | 10:44PM1.28m | 11:38AM1.08m | 00:14AM1.18m | |||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — |
 | — | — | 9:44 | — | — | 9:44 | — | — | 9:43 | — | — | 9:42 | — | — | 9:42 | — | — | 9:40 | — | — | 9:39 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 19 | 17 | 19 | 19 | 17 | 18 | 20 | 17 | 18 | 18 | 18 | 20 | 21 | 23 | 25 | 26 | 26 | 30 | 26 |
Feels °C | 13 | 15 | 16 | 16 | 18 | 17 | 15 | 16 | 19 | 16 | 17 | 17 | 20 | 21 | 22 | 23 | 24 | 24 | 25 | 28 | 20 |
Swell 1 Height (m) Direction Period (s) | NW 4 | — | W 10 | — | NW 4 | SW 4 | SW 5 | — | WSW 4 | SW 4 | SW 4 | WSW 4 | WSW 4 | — | — | W 11 | — | — | — | — | W 8 |
| kJ | 3 | — | 2 | — | 1 | 15 | 13 | — | 13 | 5 | 3 | 6 | 1 | — | — | 3 | — | — | — | — | 1 |
Swell 2 Height (m) Direction Period (s) | W 10 | — | NW 4 | WNW 4 | — | — | NW 4 | — | — | NW 4 | NW 4 | — | — | SW 4 | — | — | — | — | — | — | W 8 |
| kJ | 2 | — | 3 | 1 | — | — | 2 | — | — | 2 | 3 | — | — | 1 | — | — | — | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 9 | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 5 | WSW 5 | WSW 6 | SW 5 | — | — | SW 5 | — | — | — | — | — | — | — | — | — | — | — | — | N 4 |
| kJ | 47 | 69 | 36 | 25 | 6 | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 277 | 494 | 494 | 138 | 252 | 252 | 296 | 296 | 296 | 296 | 385 | 303 | 213 | 248 | 306 | 199 | 199 | 303 | 213 | 199 | 199 |
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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