Surf Forecasts:
Porth Ceriad surf forecast from 19 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 10PM (local time) - 4.5ft (1.3m), 7s period, WSW swell with 158 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 1.3m 7s and forecast to arrive on Saturday (Sep 19) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Sunday (Sep 20) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sat 19th Sep) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Porth Ceriad over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat afternoon, min 12°C on Sun afternoon). Winds decreasing (fresh winds from the W on Sat night, light winds from the W by Sun afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed morning. Very mild (max 19°C on Thu afternoon, min 12°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | ||||||||||||||
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 7 | WSW 5 | SW 6 | NW 5 | SW 6 | SW 4 | SW 4 | SW 4 | WSW 3 | W 12 | W 17 | SW 14 | SW 13 | W 12 | SE 3 | S 4 | S 4 | SW 5 | SW 5 | SW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 217 | 93 | 37 | 19 | 13 | 17 | 14 | 9 | 1 | 3 | 6 | 8 | 7 | 3 | 3 | 7 | 16 | 27 | 28 | 25 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | on | on | on | on | on | cross-on | cross-on | cross-off | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 3:05AM2.60m | 4:04PM2.70m | 5:14AM2.61m | 5:48PM2.90m | 6:23AM2.86m | 6:40PM3.23m | 7:03AM3.17m | 7:16PM3.59m | 7:36AM3.50m | 7:48PM3.95m | 8:07AM3.84m | 8:20PM4.28m | ||||||||
Low Tide | 9:31PM1.65m | 10:10AM1.77m | 11:24PM1.64m | 11:57AM1.65m | 00:48AM1.40m | 1:03PM1.37m | 1:38AM1.08m | 1:48PM1.06m | 2:17AM0.76m | 2:25PM0.77m | 2:52AM0.47m | 3:01PM0.53m | 3:26AM0.25m | |||||||
 |  |  |  | | | |  | | | |  | | | | | | | | | |
 | — | — | 6:58 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — |
 | 7:24 | — | — | 7:22 | — | — | 7:20 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 13 | 13 | 13 | 15 | 16 | 16 | 16 | 16 | 16 | 13 | 13 | 13 | 14 | 19 | 18 | 18 | 21 | 18 |
Feels °C | 12 | 11 | 8 | 11 | 10 | 14 | 16 | 15 | 16 | 17 | 17 | 6 | 6 | 10 | 10 | 17 | 14 | 14 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | — | W 14 | SW 6 | NW 5 | SW 6 | SW 7 | W 13 | SW 4 | WSW 3 | WSW 3 | W 17 | SW 14 | SW 8 | NNW 5 | N 4 | — | SW 4 | SW 5 | W 17 | SW 8 |
| kJ | — | 4 | 37 | 19 | 13 | 2 | 3 | 9 | 1 | 1 | 6 | 8 | 2 | 4 | 1 | — | 4 | 27 | 6 | 25 |
Swell 2 Height (m) Direction Period (s) | — | — | W 14 | SW 6 | NNW 4 | W 13 | WSW 6 | — | SW 6 | SW 6 | SW 6 | SW 9 | SW 13 | SW 7 | SW 6 | — | W 6 | — | W 12 | W 15 |
| kJ | — | — | 4 | 19 | 1 | 3 | 4 | — | 1 | 1 | 1 | 3 | 7 | 2 | 1 | — | 1 | — | 3 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 14 | W 14 | — | W 13 | W 13 | — | W 12 | W 12 | W 11 | — | W 12 | — | — | — | — | — | — |
| kJ | — | — | — | 4 | 4 | — | 3 | 3 | — | 3 | 3 | 2 | — | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 7 | WSW 5 | NW 5 | — | — | SW 4 | SW 4 | — | — | — | — | WSW 3 | NNW 4 | — | SE 3 | S 4 | S 4 | SE 3 | SW 5 | — |
| kJ | 217 | 93 | 50 | — | — | 17 | 14 | — | — | — | — | 3 | 10 | — | 3 | 7 | 16 | 3 | 28 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 448 | 236 | 135 | 3 | 125 | 133 | 267 | 248 | 133 | 138 | 120 | 126 | 138 | 125 | 181 | 229 | 298 | 298 | 132 | 107 |
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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