Surf Forecasts:
Porth Ceriad surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 1.5ft (0.4m), 8s period, WSW swell with 27 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 0.4m 8s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Thursday (Aug 06) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Thu 13th Aug) | 1.5ft (0.4m) 8s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright, grab ya board, but maybe just leave it in the car for now. The next couple of weeks are looking pretty flat and messy for us here. We’ve got a long stretch of small, weak surf, and it’s going to take a while for anything with real push to show up.
Right now, and for the next week and a half, we’re looking at swell heights mostly under 3ft. The energy is just pathetic, with combined energy readings mostly in single digits and low double digits (like 3 to 49). It’s just not doing anything. We’ve got a few windows of clean conditions, like Friday morning the 7th with glassy conditions and that light SW wind, and Monday the 10th is looking glassy in the morning too. But even with clean surfaces, there’s just no wave to ride. The swell direction is mostly from the SW, which is okay for Porth Ceriad, but the size and period aren’t working with it. The water is sitting at 64° which is much warmer than normal for this time of year, a proper summer treat if we had any surf to enjoy it in.
We’ll see a little bump in energy around the 13th and 14th, and the swell tries to push a bit higher towards the 16th, but it’s still small and junky with onshores and lumpy conditions. The 19th finally shows a bigger pulse, with a 6ft swell on Wednesday morning and the combined energy jumping up to 339. That’s a sign of life, for sure. But the wind is gonna be a mess, with onshore and cross-onshore breezes making it lumpy and probably pretty blown out. It’s a real shame because that’s the first bit of proper swell we’ll have seen. The 20th also has some moderate energy (113 and 106) but the winds are still not favorable.
Basically, we’ve got a solid 12-day drought of no-surf before that bigger swell shows up on the 19th. If you’re desperate, maybe a bodyboard. Keep an eye on that 19th, though. It might be the one, but we’ll have to see if the wind cleans up. It’s a promise, not a guarantee.
Rusty
Short Range ForecastMostly dry. Very mild (max 17°C on Thu night, min 13°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue afternoon, min 16°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 13 | SW 6 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | WSW 7 | SW 4 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | W 12 | WSW 10 | WSW 10 | SW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 16 | 19 | 6 | 5 | 9 | 7 | 3 | 5 | 8 | 6 | 6 | 9 | 8 | 5 | 1 | 1 | 3 | 10 | 9 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | glassy | cross-on | on | on | cross-on | on | on | on | cross-on | glassy | cross-off | cross-off | cross-on | cross | cross-on | on | cross-on | on |
High Tide | 2:15PM3.45m | 2:46AM3.52m | 3:25PM3.28m | 4:04AM3.34m | 4:47PM3.30m | 5:27AM3.38m | 6:03PM3.53m | 6:38AM3.60m | 7:06PM3.90m | 7:36AM3.87m | 7:59PM4.30m | 8:26AM4.13m | 8:47PM4.64m | ||||||||
Low Tide | 8:50PM1.25m | 9:48AM1.25m | 10:25PM1.35m | 11:26AM1.31m | 00:15AM1.24m | 12:58PM1.15m | 1:37AM0.91m | 2:04PM0.85m | 2:37AM0.52m | 2:57PM0.55m | 3:28AM0.17m | 3:43PM0.31m | |||||||||
 |  |  | | |  | | | | | | | | | |  | | | | | | |
 | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 17 | 16 | 15 | 16 | 15 | 16 | 16 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 19 | 19 | 20 | 19 |
Feels °C | 10 | 11 | 15 | 15 | 12 | 14 | 13 | 14 | 15 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 18 | 18 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | W 13 | NW 5 | NNW 4 | SW 4 | SW 4 | SW 4 | SW 11 | SW 4 | WSW 7 | SW 7 | SW 4 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 10 | WSW 10 | SW 9 |
| kJ | 3 | 11 | 2 | 4 | 3 | 9 | 5 | 2 | 5 | 7 | 3 | 6 | 9 | 8 | 5 | 1 | 1 | 1 | 10 | 9 | 21 |
Swell 2 Height (m) Direction Period (s) | — | SW 6 | SW 12 | — | — | SW 12 | W 11 | SW 8 | — | — | SW 6 | W 12 | — | — | — | — | — | W 12 | SW 6 | WSW 5 | WSW 4 |
| kJ | — | 16 | 6 | — | — | 5 | 2 | 3 | — | — | 6 | 3 | — | — | — | — | — | 3 | 1 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | W 12 | — | SW 12 | W 12 | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | 6 | 3 | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | — | SW 4 | — | SW 4 | — | SW 4 | — | SW 3 | SW 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 62 | — | 19 | — | 5 | — | 7 | — | 3 | 8 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 303 | 307 | 303 | 303 | 303 | 298 | 298 | 298 | 298 | 303 | 298 | 303 | 296 | 298 | 305 | 306 | 337 | 113 | 107 | 296 | 125 |
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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