Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 12 am 21 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 21 Aug 2026:

  • Most powerful swell: Thursday 27 Aug, 1AM (local time) - 4.5ft (1.3m), 6s period, SSW swell with 93 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 1.3m 6s and forecast to arrive on Thursday (Aug 27) at 1AM. Winds are predicted to be 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 Powerful 1AM (Thu 27th Aug)4.5ft (1.3m) 6s

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


The Lowdown

Alright, folks, Rusty here. Let's break down what's cookin' for the next couple weeks.

It's a dry spell, plain and simple. We've got a long stretch of nada before anything even gets close to rideable. The first hint of a wave shows up on Friday the 28th of August, but before that, from right now all the way through Thursday the 27th, it’s all tiny, blown-out junk. Leave the sticks at home.

Porth Ceriad is the only spot in the picture. It's a beginner-friendly, exposed break that likes swell from the southwest. Water temp is about what you'd expect for this time of year, nothing out of the ordinary.

On Friday morning the 28th of August, we've got a tiny 0.9m (that's about 3ft) swell from the southwest. The wind is light offshore from the NNW, keeping it clean. The period is about 7 seconds, and the combined energy is moderate at 74. The rating is just a 1 out of 10, so it's surfable but barely. This is the only real highlight of the whole period, and that's not saying much. The light wind means it’ll be clean, so if you're jonesing for a few small, weak ones, that's your one shot.

After that, from the 29th of August, the swell jumps up—hitting over 2.1m (around 7ft) on the afternoon of the 29th—but the wind swings onshore and messy. That day has some serious energy at 437, but it's lumpy and cross-onshore. Not worth it for a paddle surfer; maybe a kite surfer would have fun. Then it all fades back to tiny, weak conditions with strong winds into early September.

So, the call is simple: one clean, tiny session on Friday the 28th, then a whole lot of waiting. When it’s this quiet, you just gotta be patient.

Keep your head up.
Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Fri morning. Very mild (max 17°C on Fri afternoon, min 13°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 20mm), heaviest during Wed morning. Warm (max 24°C on Tue afternoon, min 15°C on Sun night). Mainly fresh winds.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
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
W
14
0.6
NW
5
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
10
0.2
WSW
9
0.7
SE
4
0.9
ESE
4
0.9
ESE
4
0.5
SSE
3
0.9
SSW
4
0.9
SSW
4
1.3
SSW
6
0.8
SW
7
0.7
SSW
8
0.4
SW
8
Wave Graph
Metric surfscale
Energy kJ
7
17
7
9
9
8
8
7
12
9
8
13
25
28
7
23
31
93
57
56
20
Wind (km/h)
25
NNW
10
NNE
15
NNE
20
N
25
NNW
15
N
5
NNE
15
NNW
15
E
10
E
10
NNE
35
ESE
35
ESE
25
E
25
ESE
25
E
30
S
35
SSE
25
SE
15
SSE
15
SE
Wind State
off
off
off
off
off
off
cross-off
cross-off
cross
cross
off
cross
cross
cross
cross
cross
on
on
cross-on
on
cross-on
High Tide
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
8:37AM3.75m
8:52PM4.21m
Low Tide
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
3:34PM0.55m
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
light rain
heavy rain
thunderstorm
thunderstorm
cloud
rain showers
clear
<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
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:31
8:30
8:28
8:25
8:22
8:21
8:19
 mm
3
1
2
15
3
3
1
Temp °C
15
17
15
14
14
14
15
16
16
20
23
22
21
24
18
17
19
17
18
18
17
Feels °C
11
15
11
10
9
11
13
13
14
19
19
16
16
19
20
12
15
11
15
16
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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