Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 6 am 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
19.1°C
3.2° 

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 22 Aug 2026:

  • Best quality surf: Friday 28 Aug, 1PM (local time) - 2.5ft (0.8m), 7s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 10PM (local time) - 6ft (1.8m), 8s period, SW swell with 433 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 1PM (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 Friday (Aug 28) at 1PM. The primary swell is predicted to be 0.8m and 7s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Porth Ceriad in the next 16 days are 1.8m 8s and forecast to arrive on Thursday (Aug 27) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Saturday (Aug 29) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Fri 28th Aug)2.5ft (0.8m) 7s
Best Surf 1PM (Fri 28th Aug)2.5ft (0.8m) 7s
Most Powerful10PM (Thu 27th Aug)6ft (1.8m) 8s

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


The Lowdown

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

Looking at the whole 16-day window, I gotta be straight with you – it’s a tough one. There’s a big ol’ gap right at the start with nothing worth paddling out for. From Saturday the 22nd of August, right through to the end of the month, we’re looking at tiny, weak swells and mostly poor conditions. It’s a real dry spell, with the waves just not showing up. That run of quiet days stretches all the way to the end of August.

The first sign of anything that might be rideable is on Thursday the 27th of August in the afternoon. Wind is light and cross-shore, and the swell bumps up to 7ft from the WSW. The combined wave energy is moderate at 295, but it’s a short period swell, only 6 seconds, and the forecast isn't great. It’s a marginal call and not really a standout for a proper session.

Friday the 28th of August, the morning has some clean waves with a 2ft SW swell and a cross-offshore breeze, but it’s a poor wave comment. The combined energy is weak at 41. It’s surfable, but it’s very ordinary.

The most interesting thing in the whole outlook is early September. On Wednesday the 2nd of September, we get a real pulse of energy. The afternoon sees a 6ft swell from the SW with a period of 9 seconds and a massive combined energy of 731. That’s a strong, powerful swell. But the wind is onshore from the SSW, which is a shame. The wave comment is poor. It’s too big for beginners, and with the onshore wind, it’ll be a messy, blown-out affair. This is really only for the experts who don’t mind a battle.

By Thursday morning the 3rd of September, the swell hits 7ft from the SW with a period of 10 seconds, and the combined energy is a very strong 1368. That’s a lot of water moving. But the wind is a near gale from the SSE, creating a cross-onshore bluster. The forecast says “blown out.” This is not a day for a standard surfboard; the setup looks more interesting for kite surfing than paddle surfing.

The last chance of the run comes on Friday the 4th of September. The morning brings a clean 3ft SW swell with a light cross-offshore breeze from the ENE. The combined energy is moderate at 145. The wave comment is "surfable waves but very ordinary conditions". It’s clean, but the swell is short-period at 8 seconds and a bit weak. It’s the best of a bad bunch, but it’s not a day that’ll get the heart racing.

So, if you’re desperate for a paddle, the standouts are the 2nd and 3rd of September for size, but the wind is a killer. The cleanest option is the morning of the 4th of September. Other than that, it’s a long wait for very little reward.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 36mm), heaviest during Thu morning. Warm (max 20°C on Wed afternoon, min 16°C on Tue morning). Mainly strong winds.

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
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)
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
14
0.1
SW
14
0.2
WSW
11
0.2
WSW
10
0.1
SW
13
0.1
SW
13
0.5
E
3
0.1
SW
13
0.6
ESE
4
0.2
SSW
8
0.2
SSW
8
0.2
SSW
7
0.4
SW
7
1.2
SSW
8
1.6
SW
8
0.9
SW
7
0.7
SW
7
0.7
SW
5
Wave Graph
Metric surfscale
Energy kJ
9
9
8
8
7
11
9
7
7
7
7
10
6
6
5
12
150
335
89
51
29
Wind (km/h)
10
N
20
NNW
15
NNE
10
NNE
10
NNW
15
ENE
15
ESE
15
E
25
E
25
ESE
20
ENE
20
ESE
20
SE
5
S
15
E
25
NE
50
SSE
40
SE
20
NE
25
NW
35
NW
Wind State
off
off
off
off
off
cross-off
cross-on
cross
cross
cross
cross-off
cross-on
cross-on
glassy
cross
cross-off
on
cross-on
cross-off
cross-off
cross-off
High Tide
4:55PM2.79m
5:42AM2.76m
6:14PM2.97m
6:45AM2.97m
7:07PM3.26m
7:28AM3.22m
7:46PM3.59m
8:04AM3.49m
8:20PM3.91m
8:37AM3.75m
8:52PM4.21m
9:08AM3.98m
9:23PM4.45m
Low Tide
10:53AM1.71m
00:05AM1.62m
12:43PM1.59m
1:27AM1.39m
1:44PM1.32m
2:15AM1.10m
2:25PM1.03m
2:53AM0.81m
3:01PM0.77m
3:27AM0.54m
3:34PM0.55m
4:01AM0.34m
4:07PM0.40m
cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
light rain
rain showers
rain showers
part cloud
cloud
rain showers
heavy rain
mod rain
light rain
rain showers
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:13
6:15
6:16
6:18
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:28
8:25
8:22
8:21
8:19
8:16
 mm
3
1
1
2
16
8
5
1
2
Temp °C
14
15
14
15
16
17
19
22
20
16
19
19
19
20
19
17
16
17
19
17
16
Feels °C
11
10
9
14
14
15
16
17
15
12
17
15
17
20
18
14
8
11
16
13
13
  • 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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