Surf Forecasts:
Porth Ceriad surf forecast from 13 Jul 2026:
- Most powerful swell: Thursday 16 Jul, 1AM (local time) - 2.5ft (0.7m), 4s period, ESE swell with 15 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 0.7m 4s and forecast to arrive on Thursday (Jul 16) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 14) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 16th Jul) | 2.5ft (0.7m) 4s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s be straight with you – this 16-day outlook for Porth Ceriad is a tough one. We’ve got a long stretch of flat, small, or just plain poor conditions ahead. The first proper surf doesn’t even show up on the radar until the second week, and even then it’s nothing to get excited about.
Right now, we’re looking at a dry spell. From Monday the 13th right through to the end of the first week, there’s practically nothing. The swell is tiny – we’re talking 0.3ft to 0.7ft at best, with periods all over the shop. The combined wave energy is pitiful, barely reaching double digits (1 to 14). It’s clean, sure, with some offshore and glassy moments, but you can’t surf what isn’t there. The water temperature is a whopping 66°F, which is about 7°F warmer than average for this time of year – that’s seriously unusual and feels like a warm bath, but it won’t help the waves.
We’ve got a gap of about a week with no real surf on offer. It’s not until Tuesday the 21st that we see a tiny pulse, and even then it’s marginal. The morning of the 21st is glassy with a 0.3ft swell from the west, but it’s weak. The afternoon sees a slight bump to 1ft from the northwest, with a period of just 3 seconds – that’s short-period wind slop, not groundswell. The energy is still rock bottom (4). It’s clean, but it’s not going to give you a proper ride.
The only period that might get your attention is the very end of the outlook, around Sunday the 26th. The morning shows a 2ft swell from the west-southwest, with a 4-second period. The combined energy finally gets into the low double digits (32), which is still weak, but it’s the most we’ve seen. The problem? The wind is howling onshore from the south-southwest at 19 mph. That’s going to chop it up and make it messy. For a beginner spot like Porth Ceriad, that’s not going to be a pleasant session. The afternoon stays lumpy and cross-onshore.
Honestly, there’s no standout session here. The best of a bad bunch might be the morning of the 21st, with that glassy surface, but the swell is just too small. For experts, there’s nothing to work with. For beginners, there’s nothing to learn on. This setup, with the onshore wind and weak swell, looks more interesting for kite surfing than paddle surfing. It’s a blank run, and for this area, that’s not unusual when the forecasts are this quiet.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 16°C on Mon morning). Winds decreasing (fresh winds from the NNE on Mon afternoon, light winds from the N by Wed morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 15°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | SE 4 | W 19 | W 15 | W 18 | SW 18 | W 14 | W 16 | SW 16 | ESE 4 | SW 14 | SW 14 | W 12 | SSW 7 | SW 12 | SW 13 | SW 6 | SW 6 | SW 11 | W 11 | S 5 | N 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 7 | 4 | 6 | 12 | 4 | 5 | 10 | 15 | 8 | 8 | 3 | 5 | 6 | 6 | 1 | 1 | 5 | 2 | 1 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross | cross-off | off | cross-off | glassy | cross-off | off | off | cross-off | off | off | off | off |
High Tide | 8:09PM4.31m | 8:36AM4.23m | 8:59PM4.59m | 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 | ||||||||
Low Tide | 3:06PM0.56m | 3:37AM0.29m | 3:56PM0.38m | 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 | ||||||||
 | |  | | | | | | | | | | | | | | | | |  | | |
 | 5:07 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — |
 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 24 | 23 | 23 | 25 | 25 | 23 | 27 | 26 | 23 | 25 | 22 | 22 | 24 | 22 | 16 | 18 | 18 | 16 | 19 | 18 |
Feels °C | 17 | 19 | 18 | 21 | 21 | 21 | 22 | 23 | 21 | 22 | 21 | 18 | 20 | 21 | 18 | 13 | 15 | 14 | 13 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | ESE 3 | W 19 | NNW 4 | — | SW 18 | NNW 4 | ESE 3 | SW 16 | N 5 | SW 6 | SW 6 | NNW 4 | SSW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 | N 5 | S 5 | — |
| kJ | 1 | 7 | 3 | — | 12 | 6 | 1 | 10 | 2 | 1 | 1 | 5 | 5 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | — |
Swell 2 Height (m) Direction Period (s) | — | W 15 | W 15 | W 18 | — | W 14 | — | S 7 | SW 6 | SW 14 | SW 14 | SW 7 | NNW 4 | SW 12 | SW 13 | — | — | SW 11 | S 5 | — | — |
| kJ | — | 4 | 4 | 6 | — | 4 | — | 1 | 2 | 8 | 8 | 2 | 1 | 6 | 6 | — | — | 5 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 4 | — | — | — | W 11 | — | W 16 | W 13 | W 13 | — | W 8 | W 12 | — | — | W 13 | — | — | — | W 11 | — | — |
| kJ | 1 | — | — | — | 2 | — | 5 | 3 | 3 | — | 1 | 3 | — | — | 3 | — | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | ENE 3 | NE 3 | N 5 | E 3 | — | — | ESE 4 | E 3 | NNW 2 | ENE 3 | ENE 3 | NNW 2 | N 3 | N 3 | NNW 4 | N 3 | — | NNW 4 | N 4 |
| kJ | — | — | 2 | 1 | 7 | 5 | — | — | 15 | 1 | 1 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | — | 4 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 410 | 189 | 254 | 133 | 189 | 248 | 254 | 191 | 335 | 308 | 298 | 213 | 254 | 629 | 350 | 350 | 319 | 303 | 316 | 376 | 303 |
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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