Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 12 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
17.7°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 14 Sep 2026:

  • Most powerful swell: Saturday 19 Sep, 1AM (local time) - 5.5ft (1.7m), 6s period, SW swell with 219 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 1.7m 6s and forecast to arrive on Saturday (Sep 19) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Wednesday (Sep 16) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Sat 19th Sep)5.5ft (1.7m) 6s

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 about this forecast period for Porth Ceriad. It’s a bit of a rough stretch, plain and simple. We’re looking at a run of poor to non-existent surf for most of the next couple of weeks. The water’s sitting at a very warm 64°, which is a good 4° warmer than we’d normally see this time of year – that’s a notable bump, so keep the springy wetsuit in the car.

The first week, starting Monday the 14th, is all about onshore and cross-onshore winds. The swell is there on paper – around 3ft to 5ft plus – but it’s messy and chopped up. The wave energy is weak, sitting in the low to mid-range of the scale. We’re looking at short-period windswell, which is just mush. Monday’s a write-off. Tuesday the 15th offers a bit more size, up to 4ft, and that cross-offshore wind cleans it up slightly, but it’s still poor quality. Nothing surfable here for us.

We hit a bit of a lull around the 20th, with some small stuff, but it’s glassy and clean on Sunday morning the 21st – just ankle-biters though, 1ft at most. The rest of the first week is pretty bleak, with the biggest swell on the 19th being 6ft but with a fresh cross-onshore wind making it a complete mess. There are gaps of a day or two where it’s just flat, like the 22nd and 23rd. The only real standout in that window is Thursday the 24th, when it turns glassy. But the swell is tiny, 0.6ft. It’s not worth getting wet for.

Going deeper into the second week, things just die. From the 25th to the 29th, we see mostly tiny, weak swells under 2ft. There is a promising pulse on the 29th of September, with a 3ft ESE swell and light, glassy winds in the afternoon. But it’s a short period, just 4 seconds, so it’s weak and lacking any push. The wave energy is minimal. That’s about the best we get, and it’s not saying much. Porth Ceriad is exposed to that SW swell, but none of this is doing it any favors. This is one of those stretches where you’re better off leaving the board in the van. Forecasts can change, but right now, this is a poor run of luck for the area.

Rusty.

Short Range Forecast

Moderate rain (total 13mm), heaviest on Mon night. Very mild (max 18°C on Mon night, min 13°C on Tue night). Mainly strong winds.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 18°C on Sat night, min 13°C on Thu night). Mainly fresh winds.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
SW
5
1.1
SW
5
1.7
SW
6
1.3
WSW
5
1.2
WSW
5
0.7
SW
6
0.6
WSW
6
0.9
WNW
5
1.1
SW
5
1.5
WSW
6
1.2
W
5
0.1
W
11
1
W
5
1.1
SW
5
1.7
SW
6
1.7
SW
6
1.6
SW
6
1.2
SW
6
0.9
SW
5
0.7
SW
5
0.6
SW
5
Wave Graph
Metric surfscale
Energy kJ
32
51
212
94
84
34
22
0
49
155
75
3
44
54
219
212
178
109
47
27
14
Wind (km/h)
20
SSW
30
SSW
40
SW
30
W
30
WNW
35
NW
35
NW
20
W
35
SW
35
W
30
W
25
WNW
20
WSW
35
SW
35
SW
30
SW
30
SW
20
SW
15
SW
15
SSW
15
S
Wind State
cross-on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross
cross
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
High Tide
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
4:04PM2.70m
Low Tide
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
10:10AM1.77m
11:24PM1.64m
part cloud
part cloud
rain showers
part cloud
rain showers
rain showers
rain showers
cloud
rain showers
cloud
part cloud
part cloud
part cloud
light rain
cloud
light rain
part cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:50
6:52
6:54
6:56
6:56
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:34
7:31
7:29
7:27
7:24
7:22
 mm
8
1
2
1
1
1
1
Temp °C
17
17
18
14
16
16
13
15
15
14
15
15
14
15
16
16
16
18
18
18
18
Feels °C
15
12
13
8
11
11
6
10
9
7
9
8
10
8
11
12
12
16
17
17
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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