Porth Ceriad Surf Break

Lat Long: 52.79° N 4.51° W

Porth Ceriad Surf Forecast and Surf Report

Issued: 12 pm 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:

  • Best quality surf: Friday 11 Sep, 7PM (local time) - 2ft (0.6m), 8s period, SW swell with offshore winds.
  • Most powerful swell: Monday 7 Sep, 1PM (local time) - 4ft (1.2m), 13s period, WSW swell with 472 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 7PM (local time) - 2ft (0.6m), 8s 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 (Sep 11) at 7PM. The primary swell is predicted to be 0.6m and 8s 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 1.2m 13s and forecast to arrive on Monday (Sep 07) at 1PM. 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 5s period and expected on Friday (Sep 11) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Fri 11th Sep)2ft (0.6m) 8s
Best Surf 7PM (Fri 11th Sep)2ft (0.6m) 8s
Most Powerful 1PM (Mon 7th Sep)4ft (1.2m) 13s

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


The Lowdown

Alright, grab a coffee, because I’ve been staring at the charts for Porth Ceriad, and I’ve got to be straight with you: it’s going to be a tough stretch. We’re looking at a solid run of small, messy, junky surf. I’m not going to sugarcoat it.

The next week is looking pretty flat and blown out. We’ve got a weak, short-period swell in the water, but it’s getting chopped up by cross-shore and cross-onshore winds, mainly from the west and southwest. The water’s noticeably warm for this time of year, running about 2°F warmer than average, which is nice for the skin, but that’s about the only positive.

Saturday morning (the 5th) kicks things off with just 2ft of weak, 6-second windswell and a cross-shore breeze making it choppy. The energy is low (46). It’s a no-go. The wind swings onshore later, and we stay in that frustrating 2ft to 3ft range with poor conditions through Sunday.

Monday the 7th sees the swell nudge up, but the combined energy (123) is still weak and the period is a short 6 seconds. It’s lumpy and cross-shore, and even though the size hits 5ft Monday afternoon, the wind is a fresh cross-onshore, turning it into a complete mess. This isn’t surf; it’s a washing machine.

We get a slight lull midweek, with the swell dropping off to nothing by Wednesday. Then there’s a tiny bump of 4ft on Thursday, but with a 5-second period and a cross-onshore breeze, it’s barely a ripple. Honestly, it’s a write-off. There’s about a solid week-plus here where I wouldn’t even bother paddling out. It’s a long, flat, poor spell.

The second week doesn’t offer much hope either. There are a few days with cleaner conditions, like Friday the 12th with a north offshore breeze and glassy water, but the swell is down to 1ft to 2ft, with a weak 8-second period and minimal energy (25). It’s clean, but there’s nothing to ride.

By the 16th, we’re down to literally 0.3ft of swell. It’s flat. Then, late in the period, around the 18th and 19th, we see the period jump to 12 and 16 seconds, which is a long-period groundswell signal, but the height is negligible. It’s a tease. That long-period energy will be breaking too straight for a beach break anyway, and with no size behind it, it’s nothing to get excited about.

So, what’s the best on offer? Honestly, the pick of a very bad bunch is the clean windows around the 11th and 12th. The wind will be offshore, making the water look inviting, but the swell is so small and weak that it’s only any good for a longboard and a lot of patience. It’s not a standout by any means; it’s just the least bad.

If this setup looks more interesting for a kite, you’d be right. With cross-shore winds and some lumpy swell, that’s where the action is. But for paddle surfing, this is a long, flat, frustrating run. The forecast can always change, but don’t hold your breath.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Mon night. Very mild (max 19°C on Sun morning, min 13°C on Mon night). Mainly strong winds.

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Thu night. Very mild (max 16°C on Tue afternoon, min 13°C on Tue morning). Winds decreasing (fresh winds from the W on Tue morning, light winds from the SW by Wed afternoon).

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)
0.7
SW
6
0.6
WSW
6
0.6
SSW
4
0.8
SW
5
1.1
SW
6
1.3
SW
6
0.4
SW
14
1.6
SW
6
1.4
WSW
7
1.5
W
6
1.2
W
5
0.6
WSW
6
1.2
WNW
5
0.6
NW
5
0.5
SW
4
0.7
SW
4
1.1
SW
5
1.3
SW
5
0.8
SW
8
0.6
SW
8
0.4
SW
8
Wave Graph
Metric surfscale
Energy kJ
39
23
9
32
82
114
53
165
180
149
85
20
0
19
6
15
73
100
84
42
15
Wind (km/h)
15
W
15
SW
25
S
30
SSE
35
SSW
30
SW
25
WSW
35
SW
35
W
35
W
20
WNW
35
NW
15
NNW
10
W
15
S
20
S
15
SW
30
S
45
NW
30
NNW
30
NNW
Wind State
cross
cross-on
on
on
cross-on
cross-on
cross
cross-on
cross
cross
cross-off
cross-off
cross-off
cross
on
on
cross-on
on
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
part cloud
part cloud
part cloud
cloud
rain showers
clear
part cloud
rain showers
clear
clear
cloud
cloud
part cloud
mod rain
light rain
part cloud
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
2
1
3
1
6
1
Temp °C
14
15
15
19
19
17
15
16
14
14
16
15
14
14
15
14
15
16
15
15
15
Feels °C
11
12
12
14
13
13
11
10
9
8
11
9
12
12
12
11
12
14
7
9
10
  • 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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