Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 6 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Porth Ceriad sea temperature is
19.3° C
3.4° 

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 20 Aug 2026:

  • Most powerful swell: Wednesday 26 Aug, 10PM (local time) - 2.5ft (0.8m), 6s period, SW swell with 42 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 0.8m 6s and forecast to arrive on Wednesday (Aug 26) 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 0.9m 5s period and expected on Friday (Aug 21) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10PM (Wed 26th Aug)2.5ft (0.8m) 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 – this forecast is a bit of a tough one. The next 16 days are looking pretty grim for a proper surf. We’ve got a long stretch of tiny, weak swell. The first real surfable day isn’t until the 30th, and even then, it’s nothing to write home about. You’ll be waiting over a week for anything worth paddling out for.

Let’s start with the only spot on the menu, Porth Ceriad. This is a beginner-friendly, exposed spot that works best with a south-west swell. The water temp is sitting at 67°, which is a massive 6° above normal for the time of year – that’s very unusual, feels like a warm bath, but unfortunately, it’s not helping the waves.

The first few days are a washout. From Thursday the 20th through to Wednesday the 27th, we’re looking at tiny 0.3ft to 2ft swell with weak energy (mostly under 30 on the scale). Winds are mostly offshore, so it’s clean, but there’s just no power. On Monday the 24th afternoon, it’s glassy but still flat. You’re just bobbing around.

Things get a bit more interesting around Friday the 28th afternoon. The swell bumps up to 5ft from the south-west, with moderate energy (113), but the wind shifts to a cross-onshore, making it choppy. Not great.

Saturday the 29th morning sees a 7ft west-south-west swell with a solid 394 energy reading – that’s strong energy. But the period is a short 7 seconds, and the wind is a fresh cross-shore, so it’ll be lumpy and messy. This is too big for beginners and only really for experts if you’re brave, but the wind is ruining any chance of quality. Honestly, with that wind and chop, this setup looks more interesting for kite surfing than paddle surfing.

The best on offer, and the only thing I’d call a standout, is Sunday the 30th morning. We get a glassy session with a 3ft west-south-west swell. The energy is weak (68), but the wind is glassy – completely calm. The waves are surfable, but the conditions are ordinary. It’s the cleanest we’ll see, but don’t expect bombs. The break is consistent, but crowds are likely here.

After that, it’s back to small, weak surf right through to the 4th of September. The 3rd of September afternoon brings a 6ft south-west swell with strong energy (313), and a gentle offshore wind, so it’s clean. But the period is a short 7 seconds, so it’ll be a bit of a close-out mess. It’s marginal.

So, there you have it. A long, flat spell with one redeeming glassy morning on the 30th. The forecasts can change, but for now, keep your expectations low.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Fri morning. Very mild (max 17°C on Fri afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the N on Thu afternoon, light winds from the NNE by Fri afternoon).

Days 5-7 Weather Summary

Moderate rain (total 17mm), heaviest on Tue night. Warm (max 23°C on Mon afternoon, min 16°C on Sun afternoon). Winds increasing (calm on Mon afternoon, fresh winds from the E by Mon night).

Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
6
0.4
SW
6
0.1
W
14
0.1
W
16
0.1
W
16
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
9
0.1
SW
13
0.7
ESE
4
0.8
ESE
4
0.5
E
3
0.1
SW
13
0.9
SSW
5
0.7
SW
5
0.6
SW
6
Wave Graph
Metric surfscale
Energy kJ
19
9
7
7
7
9
9
8
8
7
13
8
7
11
21
7
7
37
24
33
Wind (km/h)
35
N
30
N
20
NNW
5
NNE
15
N
15
N
25
NNW
15
NNE
10
NNE
15
NNW
15
ENE
15
ESE
5
NNE
30
ESE
35
E
25
E
35
SE
20
SSW
25
S
10
E
Wind State
off
off
off
cross-off
off
off
off
off
cross-off
off
cross-off
cross
glassy
cross
cross
cross
cross-on
on
on
cross
High Tide
2:38AM2.96m
3:15PM2.85m
4:06AM2.73m
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
Low Tide
8:46PM1.43m
9:17AM1.59m
10:04PM1.63m
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
clear
rain showers
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
heavy rain
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:11
6:13
6:15
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:34
8:31
8:30
8:28
8:25
8:22
8:21
 mm
1
3
1
15
2
1
1
Temp °C
15
15
15
17
15
14
15
14
16
17
17
20
23
21
19
22
18
18
17
17
Feels °C
8
10
12
12
11
10
10
10
15
15
14
18
19
14
16
18
16
17
13
16
  • Map Icons:
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  • 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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