Surf Forecasts:
Porth Ceriad surf forecast from 15 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 4PM (local time) - 0.5ft (0.1m), 16s period, SW swell with 10 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 16s and forecast to arrive on Wednesday (Jul 15) 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 0.9m 4s period and expected on Saturday (Jul 18) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Wed 15th Jul) | 0.5ft (0.1m) 16s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright, I’m looking at the forecast for Porth Ceriad, and I gotta be straight with you—it’s about as flat as a millpond for the foreseeable future. We’re looking at a solid 16-day window, and honestly, there’s not a single session in there that’s worth paddling out for. The swell is basically non-existent, with heights barely scraping 0.3ft and the combined energy reading just tiny little numbers like 8 or 12 (weak energy). That’s not a wave, mate, that’s a ripple.
From Wednesday the 15th all the way through to the end of the month, it’s the same story: tiny junk, mostly coming from the W or SW, with periods that are all over the place but the swell just isn’t there. Even when the wind goes glassy or offshore—like on the morning of Thursday the 16th with a NNE breeze at 3 mph—there’s nothing to ride. The water temp is about average for the time of year, so no anomalies to spice things up.
There’s a stretch from the 19th to the 22nd where the swell completely vanishes, zeros across the board. Then we get a few spots on the 23rd and 24th where it tries to come back to life, but it’s still just 0.3ft at best. By the 25th, it’s getting messy with onshore winds, and by the 27th, we’re looking at rain showers and a fresh cross-onshore breeze pushing 19 mph, which is just a write-off. The last few days of July aren’t any better.
Look, Porth Ceriad is an exposed spot, and it’s fairly consistent usually, so this kind of dead run is a bit of a bummer, but it happens. Forecasts can change, so don’t lose hope, but for now, leave the board in the shed. There’s simply nothing good on offer here.
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri night, min 13°C on Fri night). Winds decreasing (fresh winds from the NNW on Sat morning, calm by Sun morning). | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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 16 | SW 16 | W 13 | SW 14 | SW 14 | W 15 | W 12 | SW 12 | SW 13 | SW 6 | S 5 | SW 11 | NNW 5 | NNW 3 | N 3 | NNW 5 | W 8 | NW 5 | NW 5 | NNW 3 | W 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 10 | 3 | 8 | 8 | 6 | 3 | 6 | 6 | 1 | 1 | 5 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | glassy | cross-off | off | off | cross-off | off | off | off | cross-off | glassy | cross-off | off | off | off | cross-off | glassy | cross-off | off |
High Tide | 9:25AM4.33m | 9:46PM4.77m | 10:12AM4.33m | 10:33PM4.82m | 10:58AM4.23m | 11:18PM4.74m | 11:43AM4.06m | 00:03AM4.51m | 12:29PM3.83m | 00:49AM4.19m | 1:15PM3.57m | 1:38AM3.80m | 2:07PM3.31m | 2:32AM3.43m | |||||||
Low Tide | 4:27AM0.05m | 4:42PM0.26m | 5:14AM-0.07m | 5:26PM0.24m | 6:00AM-0.05m | 6:08PM0.31m | 6:44AM0.09m | 6:50PM0.46m | 7:26AM0.32m | 7:30PM0.68m | 8:08AM0.62m | 8:12PM0.93m | 8:49AM0.93m | 8:56PM1.18m | |||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — |
 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:30 | — | — | 9:28 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 25 | 25 | 22 | 23 | 22 | 20 | 21 | 20 | 15 | 16 | 18 | 18 | 19 | 17 | 15 | 16 | 19 | 19 | 20 | 20 |
Feels °C | 21 | 22 | 21 | 21 | 19 | 18 | 19 | 16 | 16 | 9 | 11 | 15 | 15 | 16 | 14 | 10 | 11 | 17 | 18 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | W 16 | SW 7 | N 4 | ESE 3 | SW 7 | SW 7 | NNW 4 | SW 6 | SW 6 | SW 6 | S 5 | NNW 6 | NNW 5 | — | NNW 3 | — | W 8 | NNW 5 | NW 5 | — | W 16 |
| kJ | 5 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 32 | 4 | — | 1 | — | 1 | 22 | 7 | — | 5 |
Swell 2 Height (m) Direction Period (s) | — | SW 16 | SW 6 | NW 4 | SW 14 | SW 12 | SW 6 | SW 12 | SW 13 | — | — | SW 11 | — | — | — | — | — | NW 5 | — | — | W 16 |
| kJ | — | 10 | 2 | 1 | 8 | 6 | 2 | 6 | 6 | — | — | 5 | — | — | — | — | — | 1 | — | — | 5 |
Swell 3 Height (m) Direction Period (s) | S 6 | — | W 13 | SW 14 | W 8 | W 15 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | 3 | 8 | 1 | 4 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | NNW 2 | E 3 | E 3 | NNW 2 | N 4 | — | NNW 4 | N 3 | NNW 4 | NNW 4 | ENE 2 | ENE 3 | NNW 3 | N 3 | NNW 5 | NNW 4 | — | — | NNW 3 | NNE 3 |
| kJ | 2 | 1 | 5 | 1 | 1 | 6 | — | 13 | 3 | 10 | 18 | 1 | 1 | 7 | 3 | 7 | 16 | — | — | 3 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 312 | 213 | 308 | 189 | 189 | 213 | 308 | 1322 | 303 | 319 | 319 | 223 | 319 | 335 | 223 | 316 | 377 | 303 | 312 | 270 | 213 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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