Surf Forecasts:
Porth Ceriad surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 1AM (local time) - 6.5ft (2.0m), 6s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 6.5ft (2.0m), 7s period, WSW swell with 372 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 7PM (local time) - 1.5ft (0.4m), 11s period with WSW swell.
Best Forecast Surf Conditions for Porth Ceriad this week:
The surf forecast for Porth Ceriad over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 7PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 1.0m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Porth Ceriad in the next 16 days are 2.0m 7s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Sep 05) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Mon 7th Sep) | 1.5ft (0.4m) 11s |
| Best Surf | 1AM (Tue 8th Sep) | 6.5ft (2.0m) 6s |
| Most Powerful | 4AM (Tue 8th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright folks, Rusty here. Grab a coffee, because we’ve got a look at Porth Ceriad for the next 16 days. I’ll be straight with you – the Finder has thrown up a bit of a blank here. The whole 16-day window shows zero recommendations, meaning there’s not a single session that ticks all the boxes for a good wave. The guidance file tells me this spot is a beginner-friendly, exposed SW swell magnet, but the forecast is a frustrating run of messy conditions.
The water temperature is sitting at 65°, which is a notable 4° warmer than usual for this time of year. You’ll be in boardies or a very thin spring suit, which is a bonus, but the waves won't be your friend.
The pattern starts with a rough first week. From Tuesday the 1st right through to the end of the first week, it’s a story of strong cross-onshore winds, lumpy, choppy surfaces, and weak, short-period swell around 4 to 6 seconds. The combined energy is weak, staying between 15 and 233 (moderate), but the wind just ruins it. A couple of days in the middle of the first week, like Wednesday the 2nd afternoon, bump up to 6ft (216 energy) but it’s a fresh cross-onshore mess. The water is messy and lumpy, not surfable.
There’s a brief window of clean conditions on Monday the 7th afternoon with a cross-offshore breeze and a very long-period, 11-second groundswell from the WSW. But the swell height is only 2ft (84 energy) – it’s clean but tiny. Wouldn’t bother paddling out for that.
The second week offers a glimmer. We see very clean conditions pop up on Friday the 11th, with a moderate cross-offshore breeze. The swell is tiny, 1ft, with a period of 4-5 seconds (4-6 energy). Clean, but absolutely flat. Sunday the 13th morning sees a strong cross-offshore breeze and clean surf, but again, only 3ft (40 energy) from the SW. On Wednesday the 16th afternoon, we get a glassy, clean spell with a 10-second swell from the west, but it's a pathetic 0.3ft (2 energy). Not even a ripple.
Given the persistent poor surf quality, strong winds, and the fact that this is a beach break, the setup looks more interesting for kite surfing than paddle surfing for the vast majority of the period. The combination of the onshore winds and the lumpy water will be a challenge for a surfer, but a kiteboarder might find some play.
The seventh day (Monday the 7th) and the 13th are the cleanest, but the swell is too small to be worth a mention as a standout. There’s no true highlight here. We’re looking at a long, blank run. It’s one of those stretches where the forecasts can change, so keep an eye on it, but right now, I’d find another hobby for a couple of weeks.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Wed morning. Very mild (max 18°C on Wed afternoon, min 14°C on Thu night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | SW 4 | SW 5 | WSW 5 | SSW 5 | SW 6 | SW 7 | SW 6 | SW 6 | SW 7 | WSW 7 | WSW 5 | SW 5 | SW 6 | SW 6 | SW 13 | SW 4 | SSW 5 | SW 6 | WSW 12 | WSW 11 | SW 6 |
Wave Graph | |||||||||||||||||||||
23 | 51 | 44 | 64 | 216 | 314 | 143 | 167 | 230 | 172 | 61 | 23 | 16 | 8 | 7 | 7 | 61 | 52 | 56 | 79 | 292 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross-on | on | on | on | on | cross | cross-off | glassy |
High Tide | 11:27AM4.26m | 11:46PM4.43m | 12:07PM4.09m | 00:30AM4.13m | 12:53PM3.82m | 1:20AM3.76m | 1:48PM3.50m | 2:24AM3.37m | 3:01PM3.24m | 3:49AM3.13m | 4:32PM3.23m | 5:21AM3.19m | 5:54PM3.50m | ||||||||
Low Tide | 6:15PM0.60m | 6:44AM0.65m | 6:48PM0.80m | 7:21AM0.92m | 7:31PM1.04m | 8:15AM1.21m | 8:50PM1.27m | 9:45AM1.42m | 10:41PM1.35m | 11:30AM1.41m | 00:19AM1.15m | 12:52PM1.16m | 1:31AM0.77m | ||||||||
6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | |
— | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:58 | — | — | 7:55 | — | — | 7:52 | — | |
mm | — | 1 | 4 | 10 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 16 | 18 | 17 | 17 | 17 | 18 | 15 | 17 | 16 | 14 | 15 | 15 | 16 | 19 | 17 | 16 | 16 | 16 |
Feels °C | 12 | 13 | 12 | 11 | 14 | 12 | 13 | 12 | 11 | 10 | 11 | 10 | 11 | 12 | 13 | 13 | 14 | 12 | 13 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | — | — | W 16 | W 16 | — | — | — | — | SW 15 | SW 14 | NW 5 | SW 5 | NW 5 | SW 6 | WSW 6 | SW 4 | SW 13 | SW 6 | WSW 6 | WSW 11 | — |
— | — | 5 | 5 | — | — | — | — | 8 | 8 | 8 | 23 | 11 | 8 | 3 | 7 | 6 | 52 | 24 | 79 | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 7 | SW 6 | NNW 4 | SW 13 | SW 13 | — | SW 12 | WSW 12 | — | — |
— | — | — | — | — | — | — | — | — | — | — | 12 | 16 | 2 | 7 | 7 | — | 6 | 56 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 14 | SW 13 | — | W 9 | — | — | NW 3 | — | — |
— | — | — | — | — | — | — | — | — | — | — | 8 | 7 | 7 | — | 2 | — | — | 2 | — | — | |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | WSW 5 | SSW 5 | SW 6 | SW 7 | SW 6 | SW 6 | SW 7 | WSW 7 | WSW 5 | NW 4 | — | — | — | SSE 3 | SSW 5 | WSW 4 | — | SW 3 | SW 6 |
23 | 51 | 44 | 64 | 216 | 314 | 143 | 167 | 230 | 172 | 61 | 27 | — | — | — | 3 | 61 | 10 | — | 5 | 292 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 296 | 246 | 298 | 298 | 267 | 252 | 373 | 191 | 135 | 126 | 126 | 138 | 138 | 125 | 186 | 280 | 225 | 3 | 120 | 0 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











