Surf Forecasts:
Porth Ceriad surf forecast from 3 Aug 2026:
- Best quality surf: Sunday 9 Aug, 1AM (local time) - 3ft (0.9m), 6s period, WSW swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 1PM (local time) - 6ft (1.9m), 6s period, WSW swell with 255 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 1AM (local time) - 3ft (0.9m), 6s 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 Sunday (Aug 09) at 1AM. The primary swell is predicted to be 0.9m and 6s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Porth Ceriad in the next 16 days are 1.9m 6s and forecast to arrive on Wednesday (Aug 05) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Aug 06) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 9th Aug) | 3ft (0.9m) 6s |
| Best Surf | 1AM (Sun 9th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 1PM (Wed 5th Aug) | 6ft (1.9m) 6s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it.
We’re looking at a pretty quiet stretch ahead for Porth Ceriad. The water is sitting at 64°F which is a solid 4°F warmer than usual for this time of year—that’s notably warm, you’ll feel it.
The first real chance of anything surfable won’t show up until the afternoon of Sunday the 16th of August, and even then it’s barely a whisper. The swell is tiny at 2ft from the SW, with a short period of 7 seconds, and the combined energy is a measly 51 (weak). Winds are light and cross-off, so the surface will be clean, but there’s just not enough push to get excited about. It’s a “surfable but very ordinary” kind of day—one for the longboard if you’re desperate.
Before that, we’ve got a long gap of nothing but flat or poor conditions. Monday 3rd through to Saturday 16th morning is a write-off. There’s a brief spike on Wednesday 5th and Saturday 8th where the swell bumps up to 6ft and 6ft, but the wind is howling cross-shore or cross-onshore, making it a total mess. The combined energy on those days hits 214 and 216 (moderate), but the quality is poor—more of a kite session than a paddle session.
The standout, if you can call it that, is the afternoon of Sunday 16th. The swell is small, but it’s the first time the wind and waves line up for anything clean. That’s your best bet, and it’s not saying much.
Keep an eye on the morning of Monday 17th—there’s a 6ft pulse from the NW with 289 combined energy (moderate), but the wind is light cross-on and the conditions are marginal. If the wind swings more favourable, that could be a sneaky session, but as it stands, it’s a gamble.
Overall, the next two weeks are lean. Porth Ceriad is an exposed, beginner-friendly spot, and when there’s no swell, it’s just a pretty beach. We’ll see if the forecasts change.
Stay patient, Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 23°C on Mon morning, min 14°C on Wed morning). Winds increasing (light winds from the E on Mon night, strong winds from the W by Wed morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sat night, min 13°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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 9 | SW 8 | SW 8 | SW 7 | SW 7 | SW 6 | WSW 6 | WSW 6 | W 6 | SW 6 | WSW 6 | SW 5 | SW 5 | SW 5 | SW 5 | SW 5 | SW 6 | WSW 6 | SW 6 | SW 7 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 30 | 35 | 32 | 73 | 73 | 124 | 214 | 164 | 157 | 38 | 21 | 19 | 8 | 6 | 53 | 98 | 216 | 62 | 15 | 14 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | on | cross-on | cross-on | cross | cross | cross | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | off | cross-off | cross-off | cross-off |
High Tide | 11:53AM3.96m | 00:11AM4.27m | 12:34PM3.84m | 00:54AM4.07m | 1:20PM3.66m | 1:44AM3.80m | 2:15PM3.45m | 2:46AM3.52m | 3:25PM3.28m | 4:04AM3.34m | 4:47PM3.30m | 5:27AM3.38m | 6:03PM3.53m | ||||||||
Low Tide | 6:45PM0.75m | 7:20AM0.69m | 7:17PM0.91m | 7:56AM0.87m | 7:54PM1.08m | 8:41AM1.07m | 8:50PM1.25m | 9:48AM1.25m | 10:25PM1.35m | 11:26AM1.31m | 00:15AM1.24m | 12:58PM1.15m | 1:37AM0.91m | ||||||||
 |  |  | | |  |  | | | | |  | | | | |  | | | | | |
 | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — |
 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — |
mm | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 19 | 18 | 18 | 19 | 17 | 16 | 17 | 16 | 14 | 15 | 16 | 15 | 16 | 16 | 15 | 17 | 18 | 16 | 18 | 18 |
Feels °C | 21 | 15 | 17 | 16 | 14 | 13 | 8 | 10 | 9 | 10 | 13 | 13 | 15 | 13 | 13 | 10 | 14 | 17 | 14 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | SW 8 | SW 8 | SW 7 | — | — | — | NW 5 | — | SW 6 | WSW 6 | SW 5 | SW 5 | — | — | — | — | WSW 6 | SW 6 | SW 7 | SW 4 |
| kJ | 30 | 35 | 32 | 73 | — | — | — | 35 | — | 38 | 21 | 19 | 8 | — | — | — | — | 62 | 15 | 14 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 13 | NNW 5 | NNW 4 | NNW 3 | W 12 | — | — | — | — | NW 4 | NW 4 | SW 7 |
| kJ | — | — | — | — | — | — | — | — | — | 3 | 17 | 2 | 1 | 3 | — | — | — | — | 3 | 2 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 12 | SW 12 | SW 12 | — | — | — | — | — | SW 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 6 | — | — | — | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | — | — | S 3 | SW 7 | SW 6 | WSW 6 | WSW 6 | W 6 | NW 5 | — | — | — | SW 5 | SW 5 | SW 5 | SW 6 | — | — | — | — |
| kJ | 4 | — | — | 5 | 73 | 124 | 214 | 164 | 157 | 41 | — | — | — | 6 | 53 | 98 | 216 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 107 | 107 | 107 | 252 | 310 | 307 | 298 | 1030 | 126 | 318 | 303 | 303 | 298 | 303 | 200 | 306 | 373 | 0 | 113 | 298 | 289 |
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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