Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 6 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
17.7°C
2.2° 

Porth Ceriad surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Porth Ceriad surf forecast from 12 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 7AM (local time) - 2.5ft (0.8m), 7s period, SW swell with cross-offshore winds.
  • Most powerful swell: Saturday 12 Sep, 1PM (local time) - 7.5ft (2.3m), 7s period, SW swell with 529 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 7AM (local time) - 2.5ft (0.8m), 7s 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 Sunday (Sep 13) at 7AM. The primary swell is predicted to be 0.8m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Porth Ceriad in the next 16 days are 2.3m 7s and forecast to arrive on Saturday (Sep 12) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Wednesday (Sep 16) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 13th Sep)2.5ft (0.8m) 7s
Best Surf 7AM (Sun 13th Sep)2.5ft (0.8m) 7s
Most Powerful 1PM (Sat 12th Sep)7.5ft (2.3m) 7s

Table - best surf conditions forecast for Porth Ceriad over the next 16 days.


The Lowdown

Right then, let’s have a look at what’s on offer for Porth Ceriad over the next couple of weeks. I’ll be honest with you, it’s a bit of a grim picture for us here. We’ve got a proper nothingburger of a forecast on our hands.

The first solid bit of swell we see isn’t until the 20th of September, but that’s a write-off. We’re looking at a strong 7ft to 8ft SW swell with a period of 6 to 8 seconds, but it comes with a near gale-force cross-onshore wind of 22 to 31 mph. That’s completely blown out, absolute whitecaps and washing machine conditions. Not even worth getting the wetsuit on for.

Before that, we’ve got a full week of almost nothing. From the 12th right through to the 19th, the combined swell energy barely gets into double digits most days, sitting around 20 to 119 (weak to low-end moderate). The swell is tiny, mostly below 4ft and short period, and when there is any size it’s hammered by cross-onshore winds. Even the cleaner days on the 15th and 16th with offshore and cross-off winds only offer knee-high dribble of 1ft to 2ft. It’s just not happening.

The only glimmer in this whole outlook is the morning of the 21st of September. It’s a day late, after the storm, but we get a little 2ft SW groundswell with a 7-second period and a light offshore breeze from the NE at 3 mph. The combined energy is still weak at 54, but the winds are clean, the water is glassy, and the break will be clean. For a beginner spot that’s normally pretty forgiving, this is the one moment you could actually catch a little wave without fighting a gale. It’s not a standout by any stretch, but in this run, it’s the best we’ve got.

After that, it’s a slow slide back into nothing. The 22nd onward shows tiny, weak swells with poor winds again. Really, the entire 16-day window is a dud. For an exposed spot like this, that’s a long, dry spell.

Stay patient, lads. Blank runs like this are part of the deal sometimes. Forecasts can change, but for now, if you’re desperate, pencil in the early morning of the 21st.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 18°C on Sun morning, min 16°C on Sat morning). Winds decreasing (strong winds from the SW on Sat morning, light winds from the WNW by Sat night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Tue afternoon, min 13°C on Tue night). Winds increasing (light winds from the W on Tue afternoon, strong winds from the WSW by Wed night).

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SW
7
2.1
SW
7
1.2
WSW
7
0.6
SW
6
0.5
SW
6
0.4
SW
6
1.1
SW
5
1.3
SW
5
1.5
SW
6
1.1
SW
6
0.7
SW
6
0.4
SW
6
0.4
SW
6
0.3
WSW
7
0.9
WSW
4
1.4
W
6
1.1
W
5
1.1
W
5
0.9
WSW
4
1.1
SW
5
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
374
440
153
34
20
10
69
93
146
85
38
10
8
10
34
119
60
50
36
51
129
Wind (km/h)
45
SW
40
SW
20
SW
10
N
10
WSW
20
S
20
SW
35
SSW
30
SW
25
NW
15
WNW
40
NW
30
NW
20
WNW
30
SW
30
W
25
W
30
W
25
W
25
SW
35
SW
Wind State
cross-on
cross-on
cross-on
off
cross
on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-off
cross
cross-off
cross
cross-on
cross-on
High Tide
9:50PM4.85m
10:10AM4.47m
10:28PM4.72m
10:46AM4.37m
11:05PM4.46m
11:22AM4.16m
11:41PM4.11m
11:57AM3.87m
00:18AM3.70m
12:34PM3.53m
00:57AM3.28m
1:15PM3.17m
1:45AM2.89m
Low Tide
4:37PM0.12m
5:03AM0.00m
5:10PM0.20m
5:34AM0.22m
5:41PM0.37m
6:02AM0.51m
6:10PM0.60m
6:28AM0.82m
6:38PM0.87m
6:53AM1.13m
7:13PM1.16m
7:27AM1.41m
8:05PM1.45m
mod rain
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
rain showers
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:47
6:48
6:50
6:52
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:40
7:38
7:37
7:34
7:31
7:29
7:27
 mm
9
1
6
1
Temp °C
16
17
17
18
17
17
17
18
17
15
16
15
13
15
16
14
16
15
14
15
16
Feels °C
8
12
15
18
16
16
15
14
12
11
13
8
7
10
11
7
11
8
9
10
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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How to use the Wavefinder 

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porth Ceriad surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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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