Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 6 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
18.0°C
2.3° 

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 5 Sep 2026:

  • Most powerful swell: Monday 7 Sep, 10AM (local time) - 3.5ft (1.1m), 14s period, WSW swell with 494 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 1.1m 14s and forecast to arrive on Monday (Sep 07) at 10AM. 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 5s period and expected on Friday (Sep 11) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10AM (Mon 7th Sep)3.5ft (1.1m) 14s

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


The Lowdown

Alright, let’s get into it. This is a tough stretch for us around here.

Look, I’ve gotta be straight with you – for Porth Ceriad, the next sixteen days is a proper write-off. There is simply no surf worth getting wet for. We’re looking at a long, barren run from now all the way through to the 20th of September. That’s over two weeks with absolutely no recommendations. Every single session in the data comes back as "poor surf conditions." It’s one of those blank runs that’s more normal for this area when the swell just doesn’t line up.

We start off on Saturday the 5th with tiny 3ft swell from the WSW, but a cross-shore wind messes it up. The water temp is a notable 64°, which is 4° warmer than usual for this time of year – that’s a significant warm anomaly. But honestly, with combined wave energy barely hitting 73, it’s just weak and choppy. Sunday the 6th is even worse with rain and onshore winds. The only time we see any real size is Monday the 7th morning, with a 4ft WSW swell and a very long period of 14 seconds from a groundswell (energy hits 494), but it’s ruined by strong cross-onshore winds at 25 km/h. A long-period groundswell like that would usually be better on a point or reef, but with the wind howling, it’s just a mess.

Tuesday the 8th has 6ft swell with 254 energy, but again, the wind is a fresh cross-shore, making it lumpy and ugly. That size is too much for beginners anyway, but the quality is shot. By Wednesday the 9th it drops back to tiny 2ft, and although the wind goes cross-offshore making it clean, the energy is only 32 – not enough to ride. From Thursday the 10th onwards it’s a mix of onshore chop or flat spells. There’s a glassy morning on the 14th with 0.3ft, but that’s barely a ripple. Even the offshore winds we get around the 17th and 18th are on flat or near-flat waves with energy at 1 or 0. The long-period 16-second swell on the 19th is a tease – clean and offshore, but with only 0.3ft and 7 energy, you’d be sitting on a still ocean.

There’s nothing to highlight here, folks. No standouts, no silver linings. The only thing worth saying is that for breaks this exposed, when the swell and wind refuse to cooperate, it’s a proper dust-off. The setup here might look more interesting for kite surfing than paddle surfing on the few days we get that cross-shore breeze and a bit of swell, but for us surfers? Forget it.

Hang in there. Forecasts can change, but right now, this is as grim as it gets.

Rusty

Short Range Forecast

Light rain (total 8mm), mostly falling on Sat night. Warm (max 20°C on Sun afternoon, min 13°C on Sat night). Winds increasing (light winds from the W on Sat morning, strong winds from the SW by Mon afternoon).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Wed night. Very mild (max 18°C on Thu afternoon, min 13°C on Tue night). Mainly strong winds.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
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)
0.8
WSW
6
0.6
WSW
6
0.6
SSW
4
0.7
SW
5
1.1
SW
6
1.3
SW
6
1.1
WSW
14
1.9
SW
6
1.8
WSW
7
1.9
WSW
6
1.4
WSW
6
0.1
SW
9
0.7
WSW
6
0.6
WSW
6
0.9
WSW
5
1.8
SW
6
1.1
SW
7
1.3
WSW
4
1.6
W
5
1.4
W
6
0.4
SW
8
Wave Graph
Metric surfscale
Energy kJ
47
22
9
27
67
111
494
269
273
254
126
3
30
22
39
236
118
67
0
0
16
Wind (km/h)
15
W
15
SW
25
S
25
SSE
25
SSW
30
SW
25
WSW
40
SW
35
W
35
W
30
WSW
30
WNW
20
NW
20
SW
35
SSW
40
WSW
35
WSW
45
W
35
NW
25
WNW
25
NW
Wind State
cross
cross-on
on
cross-on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-on
cross-on
cross
cross-on
cross
cross-off
cross-off
cross-off
High Tide
3:01PM3.24m
3:49AM3.13m
4:32PM3.23m
5:21AM3.19m
5:54PM3.50m
6:32AM3.46m
6:56PM3.92m
7:27AM3.80m
7:46PM4.33m
8:12AM4.10m
8:30PM4.65m
8:54AM4.33m
9:11PM4.83m
Low Tide
10:41PM1.35m
11:30AM1.41m
00:19AM1.15m
12:52PM1.16m
1:31AM0.77m
1:53PM0.82m
2:25AM0.38m
2:41PM0.50m
3:11AM0.08m
3:23PM0.27m
3:51AM-0.09m
4:02PM0.14m
clear
part cloud
light rain
rain showers
cloud
part cloud
cloud
light rain
rain showers
clear
part cloud
clear
clear
part cloud
mod rain
part cloud
clear
part cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:37
6:39
6:39
6:41
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:55
7:52
7:51
7:49
7:45
7:44
 mm
4
2
1
1
8
Temp °C
14
15
15
19
20
17
15
16
15
14
16
15
14
15
17
16
18
16
15
16
16
Feels °C
12
12
11
13
15
13
11
9
9
7
9
8
10
10
11
9
12
8
7
11
11
  • 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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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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