Surf Forecasts:
Porth Ceriad surf forecast from 9 Jul 2026:
- Most powerful swell: Tuesday 14 Jul, 4PM (local time) - 0.5ft (0.1m), 18s period, SW swell with 12 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 0.1m 18s and forecast to arrive on Tuesday (Jul 14) at 4PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Jul 11) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 14th Jul) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Alright, surfers, Rusty here. Let’s be straight with you – this 16-day window for Porth Ceriad is a tough one. We’re looking at a long stretch of tiny, weak surf that’s just not worth paddling out for. The first real chance of anything rideable doesn’t show up until the very end of the period, and even that is small.
For the first week, from Thursday the 9th through to Sunday the 19th of July, we’ve got a flat spell with barely a ripple. Swell heights are mostly around 0.3 ft to 1 ft, and the combined wave energy is next to nothing – we’re talking values like 2 (weak) or even 0. The wind is often offshore or glassy, so the water’s surface would be clean, but there’s simply no push to the waves. It’s a real bummer.
Now, Sunday morning the 19th and Monday the 20th are still tiny. By Tuesday the 21st, we’re still stuck with 0.7 ft junk. Things don’t start to lift until the last couple of days. Friday morning the 24th shows a couple of windows with a small 2 ft SSW swell, but the combined energy is still weak (25). That’s the best we’ve got, and it’s not saying much. It’s a beginner-friendly size, but the quality? Poor. Glassy conditions on Friday morning the 24th would be beautiful to look at, but the surf just isn’t there.
Honestly, for this whole 16-day run, there isn’t a standout session. The swell is tiny, the periods are short, and the energy is pathetic. If you’re desperate, keep an eye on the 24th of July, but don’t hold your breath. The water is sitting at 63°F – which is over 5°F warmer than usual for this time of year, so the water is feeling much warmer than normal. If you’re determined to get wet, it looks more like a paddle-around day than a surf day.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Sat afternoon, min 14°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 4 | WSW 4 | W 12 | W 10 | W 10 | W 9 | W 8 | W 8 | ESE 3 | NNW 5 | NW 4 | E 3 | E 3 | W 19 | W 15 | W 18 | SW 18 | W 14 | W 16 | SW 16 | W 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 1 | 2 | 0 | 1 | 3 | 1 | 7 | 4 | 6 | 12 | 4 | 5 | 10 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | off | cross-off | off | glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off |
High Tide | 4:02PM3.32m | 4:32AM3.54m | 5:13PM3.44m | 5:43AM3.64m | 6:18PM3.68m | 6:47AM3.84m | 7:16PM3.99m | 7:44AM4.06m | 8:09PM4.31m | 8:36AM4.23m | 8:59PM4.59m | 9:25AM4.33m | 9:46PM4.77m | ||||||||
Low Tide | 10:24AM1.08m | 10:44PM1.28m | 11:38AM1.08m | 00:14AM1.18m | 1:00PM0.98m | 1:36AM0.93m | 2:09PM0.78m | 2:41AM0.60m | 3:06PM0.56m | 3:37AM0.29m | 3:56PM0.38m | 4:27AM0.05m | 4:42PM0.26m | ||||||||
 | |  | | | | | |  | | | | | | |  | |  | | | | |
 | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — |
 | — | — | 9:40 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 17 | 18 | 19 | 24 | 24 | 24 | 24 | 25 | 25 | 22 | 26 | 23 | 20 | 25 | 24 | 24 | 26 | 24 | 26 | 28 | 20 |
Feels °C | 16 | 17 | 18 | 23 | 23 | 22 | 24 | 23 | 23 | 20 | 23 | 18 | 16 | 21 | 19 | 22 | 22 | 19 | 24 | 26 | 20 |
Swell 1 Height (m) Direction Period (s) | WSW 4 | WSW 4 | SW 4 | — | W 9 | W 9 | NNW 6 | W 8 | NNW 5 | NNW 5 | NW 4 | N 5 | — | — | NNW 5 | ESE 3 | SW 18 | N 5 | N 3 | SW 8 | SW 7 |
| kJ | 2 | 2 | 1 | — | 2 | 2 | 29 | 1 | 17 | 4 | 1 | 2 | — | — | 5 | 1 | 12 | 2 | 1 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 10 | W 10 | W 9 | W 8 | — | W 8 | ESE 3 | — | — | — | W 19 | W 15 | — | — | W 14 | W 16 | SW 16 | N 5 |
| kJ | — | — | — | 2 | 2 | 2 | 1 | — | 1 | 1 | — | — | — | 7 | 4 | — | — | 4 | 5 | 10 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | W 12 | — | — | — | W 7 | — | W 6 | — | — | — | — | W 15 | — | W 18 | — | — | W 13 | W 13 | W 13 |
| kJ | — | — | 3 | — | — | — | 1 | — | 1 | — | — | — | — | 4 | — | 6 | — | — | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | NW 3 | N 3 | — | NW 4 | NNW 4 | — | NNW 5 | ESE 3 | — | — | E 3 | E 3 | — | ESE 3 | ENE 2 | — | ESE 3 | E 2 | ENE 3 | E 3 |
| kJ | — | 2 | 1 | — | 3 | 16 | — | 25 | 2 | — | — | 3 | 1 | — | 3 | 1 | — | 2 | 1 | 3 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 186 | 289 | 186 | 125 | 125 | 133 | 223 | 245 | 223 | 336 | 189 | 345 | 401 | 133 | 254 | 113 | 133 | 254 | 133 | 191 | 107 |
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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