Surf Forecasts:
Porth Ceriad surf forecast from 22 Aug 2026:
- Best quality surf: Friday 28 Aug, 4PM (local time) - 3.5ft (1.0m), 9s period, SW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 1AM (local time) - 3.5ft (1.1m), 11s period, SW swell with 298 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 4PM (local time) - 3.5ft (1.0m), 9s period with SW 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 Friday (Aug 28) at 4PM. The primary swell is predicted to be 1.0m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Porth Ceriad in the next 16 days are 1.1m 11s and forecast to arrive on Friday (Aug 28) at 1AM. 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 3s period and expected on Sunday (Aug 23) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 28th Aug) | 3.5ft (1.0m) 9s |
| Best Surf | 4PM (Fri 28th Aug) | 3.5ft (1.0m) 9s |
| Most Powerful | 1AM (Fri 28th Aug) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at the next 16 days for Porth Ceriad.
Truth be told, mate, it’s a pretty grim run. There’s a massive gap at the start with no real surf to speak of. From now until the end of August, it’s all tiny, weak dribble – nothing breaking over 0.7ft, and the energy is barely registering (16 for the combined energy). The winds are messy, mostly cross or onshore, and the water is a whopping 66°F right now, which is much warmer than normal for this time of year. It feels like a bath out there, but there’s nothing to ride.
The first faint glimmer of hope comes on Friday, August 28. The morning’s a write-off with a strong 30 km/h cross-onshore wind, but the afternoon glass off is a little beauty. The swell jumps to 3ft from the SW with a period of 9 seconds, and the combined energy hits 149 – that’s moderate, a real sign of life. The wind goes glassy, so the surface will be clean. It’s just a surfable wave, but nothing special.
If you’ve got a bit of patience, the highlight of the whole outlook is Friday, September 4. The afternoon session is the best we’re going to see. Swell builds to 6ft from the SW, with a period of 6 seconds – that’s short period, so it’s a bit choppy in the water, but the combined energy is a solid 282, which is strong. The wind is a clean 15 km/h cross-offshore from the NW, so the face will be smooth. The water temp is back to normal by then, and the break is exposed to the SW swell, which is right on the money. At 6ft, it’s getting into the fun zone, but it’s a bit too much for beginners. The crowd here is often, so expect some company.
The morning of the 4th is also clean, with 5ft, but the wind is a bit stronger. The afternoon is the pick.
Before that, there’s a pulse on Saturday, August 30, with 6ft from the W, but the wind is a messy cross-on or cross-shore, so it’s a lumpy, bumpy mess. Not worth it.
After the 4th, it all drops off again into tiny, wind-blown junk. September 6 is a total write-off with near gale winds.
So, the standout is Friday afternoon, September 4 at Porth Ceriad. It’s clean, it’s got some punch, and the direction is perfect. Get on it early.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Mon afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the N on Sat afternoon, light winds from the NNW by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 44mm), heaviest during Wed night. Warm (max 22°C on Tue afternoon, min 15°C on Thu night). Winds increasing (calm on Wed afternoon, strong winds from the SSE by Thu afternoon). | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 15 | SW 15 | SW 14 | SW 14 | WSW 11 | WSW 10 | SW 13 | ESE 4 | E 3 | SW 13 | E 3 | SSW 8 | SSW 8 | SSW 7 | SE 3 | SW 7 | SW 11 | SW 9 | SW 9 | SW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 9 | 8 | 8 | 7 | 11 | 9 | 7 | 13 | 7 | 7 | 8 | 6 | 6 | 5 | 5 | 15 | 298 | 217 | 149 | 36 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | cross-off | cross-on | off | cross | cross | cross-off | cross | cross | glassy | cross | cross | cross-on | on | cross-on | glassy | cross-off |
High Tide | 4:55PM2.79m | 5:42AM2.76m | 6:14PM2.97m | 6:45AM2.97m | 7:07PM3.26m | 7:28AM3.22m | 7:46PM3.59m | 8:04AM3.49m | 8:20PM3.91m | 8:37AM3.75m | 8:52PM4.21m | 9:08AM3.98m | 9:23PM4.45m | |||||||
Low Tide | 00:05AM1.62m | 12:43PM1.59m | 1:27AM1.39m | 1:44PM1.32m | 2:15AM1.10m | 2:25PM1.03m | 2:53AM0.81m | 3:01PM0.77m | 3:27AM0.54m | 3:34PM0.55m | 4:01AM0.34m | 4:07PM0.40m | ||||||||
 |  | | | |  |  |  | | | | | |  |  |  |  | | |  | |
 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — |
 | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 10 | 3 | 14 | 6 | — | 2 |
Temp °C | 14 | 13 | 15 | 16 | 17 | 19 | 20 | 20 | 18 | 22 | 21 | 20 | 21 | 20 | 17 | 17 | 17 | 16 | 17 | 16 |
Feels °C | 8 | 8 | 14 | 14 | 15 | 18 | 16 | 15 | 16 | 20 | 15 | 19 | 21 | 19 | 16 | 16 | 11 | 11 | 17 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | NNW 4 | SW 14 | NNW 3 | WSW 10 | SW 9 | SW 13 | SW 13 | — | SW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SW 7 | SW 11 | SW 9 | SW 9 | SW 8 |
| kJ | 9 | 8 | 2 | 7 | 2 | 9 | 3 | 7 | 7 | — | 3 | 6 | 6 | 5 | 4 | 15 | 298 | 217 | 149 | 36 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 14 | W 9 | WSW 11 | SW 14 | — | SW 9 | SW 8 | SW 8 | — | SW 12 | — | — | W 12 | SSE 3 | SW 4 | — | — | — |
| kJ | 6 | 6 | 8 | 2 | 11 | 8 | — | 3 | 3 | 3 | — | 6 | — | — | 3 | 1 | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 5 | W 12 | W 9 | — | SW 14 | — | SW 13 | — | SE 4 | SW 13 | SW 13 | — | W 12 | W 12 | — | WSW 8 | — | — | — | — |
| kJ | 1 | 3 | 2 | — | 7 | — | 7 | — | 1 | 7 | 7 | — | 3 | 3 | — | 7 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 3 | — | NNW 2 | — | SE 3 | — | ESE 4 | E 3 | — | E 3 | SE 3 | — | — | SE 3 | S 3 | — | — | — | W 4 |
| kJ | 13 | 4 | — | 1 | — | 1 | — | 13 | 5 | — | 8 | 2 | — | — | 5 | 1 | — | — | — | 21 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 308 | 189 | 213 | 248 | 113 | 298 | 301 | 273 | 254 | 213 | 255 | 280 | 133 | 113 | 114 | 262 | 201 | 27 | 0 | 314 |
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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