Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 12 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
17.6°C
2.1° 

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 13 Sep 2026:

  • Most powerful swell: Saturday 19 Sep, 10AM (local time) - 8ft (2.4m), 7s period, WSW swell with 595 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 2.4m 7s and forecast to arrive on Saturday (Sep 19) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Thursday (Sep 17) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10AM (Sat 19th Sep)8ft (2.4m) 7s

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


The Lowdown

Alright mate, Rusty here. Let’s have a look at what’s on the cards for Porth Ceriad.

Honestly, it’s a tough run ahead. For the next sixteen days, there’s no surf worth paddling out for. The swell that does show up is small, short-period stuff, and when it does get a bit of size, the wind is all wrong. You’d be better off keeping the board in the van for most of this stretch. The water temperature is sitting at 64°, which is a good 4° warmer than usual for this time of year, so it’s noticeably balmy if you do go for a swim.

The first proper pulse of energy arrives on Tuesday the 15th. On Tuesday morning, we’ve got a 5ft swell from the WSW, with a combined swell energy of 130 and a period of 6 seconds. The wind is cross-off from the WNW at 22 mph, so it’s clean-looking, but that short period means it’ll be a bit weak and crumbly. By Tuesday afternoon, the wind shifts onshore from the W at 12 mph, and it gets lumpy. Nothing to get excited about.

Thursday the 17th morning sees another bump: 5ft from the W, period of 6 seconds, energy of 121, and cross-off wind from the WNW at 22 mph. Again, clean but short-period. The afternoon gets messy with cross-shore wind.

Now, Saturday the 19th is the biggest swell of the whole period. We’re talking 8ft from the WSW on Saturday morning, period of 7 seconds, and a strong combined swell energy of 595. That’s a lot of water moving. But the wind is a strong cross-shore from the W at 25 mph, creating messy, lumpy conditions. At 8ft, it’s in the “experts only” territory for size alone, but with that wind, it’s honestly more interesting for kite surfing than a paddle session. Saturday afternoon is similar at 7ft and 22 mph cross-shore wind.

After that pulse, the swell drops right off. From Sunday the 20th onwards, it’s a long, drawn-out fade. The waves shrink to under 3ft, and by Wednesday the 23rd, we’re down to a tiny 0.3ft with offshore wind – clean, but there’s no wave to ride. The last twelve days of the forecast are almost completely flat, with lots of zeros and only tiny 0.3ft to 1ft swells. A couple of those days have glassy conditions, but you’d need a paddleboard, not a surfboard.

The worst part is that Porth Ceriad is rated as fairly consistent, so this blank run is not typical. It’s just one of those stretches where Mother Nature isn’t playing ball. Keep an eye on the charts, it tends not to stay poor for long.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Mon night. Very mild (max 18°C on Sun night, min 13°C on Tue night). Winds increasing (calm on Sun morning, strong winds from the SW by Mon night).

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Fri night. Very mild (max 17°C on Fri night, min 13°C on Wed morning). Winds increasing (light winds from the W on Wed afternoon, strong winds from the SW by Fri night).

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
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)
0.6
SW
6
0.6
SW
6
0.7
SW
6
0.8
SW
5
1.1
SW
5
1.7
SW
6
1.5
WSW
6
1.2
W
5
0.6
WSW
5
0.5
SW
6
0.3
WSW
6
0.8
WSW
4
1.4
W
6
1.2
W
5
1.5
W
5
1.3
W
5
1.2
SW
5
2
SW
7
2.4
WSW
7
2.2
SW
7
1.5
SW
7
Wave Graph
Metric surfscale
Energy kJ
33
32
38
30
65
210
130
82
19
19
8
19
121
74
0
90
73
337
595
515
204
Wind (km/h)
5
NW
10
SSW
20
SSW
20
S
30
SSW
35
SW
35
WNW
20
W
40
NW
30
NW
20
W
30
SW
35
WNW
30
W
35
WNW
20
WSW
40
SW
40
WSW
40
W
35
W
35
WNW
Wind State
glassy
cross-on
cross-on
on
cross-on
cross-on
cross-off
cross
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-off
cross-on
cross-on
cross-on
cross
cross
cross-off
High Tide
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
2:13PM2.85m
3:05AM2.60m
Low Tide
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
8:28AM1.66m
9:31PM1.65m
part cloud
part cloud
part cloud
cloud
part cloud
rain showers
part cloud
part cloud
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part cloud
part cloud
rain showers
part cloud
cloud
part cloud
part cloud
part cloud
light rain
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:48
6:50
6:52
6:54
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:38
7:37
7:34
7:31
7:29
7:27
7:24
 mm
6
1
5
Temp °C
17
17
18
17
17
17
15
16
16
13
15
15
14
16
15
15
15
17
15
17
15
Feels °C
19
17
18
15
12
12
9
12
11
7
10
9
7
10
7
9
8
11
8
10
7
  • 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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