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Surf Forecasts:

Porth Ceriad surf break

Porth Ceriad surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 11 pm Thursday 20 Nov 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Porth Ceriad surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Ceriad sea temperature is
12.3° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Porth Ceriad this week:

The surf forecast for Porth Ceriad over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Nov 22) at 12PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.1m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Porth Ceriad in the next 12 days are 4.0m 10s and forecast to arrive on Sunday (Nov 23) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 7s period and expected on Monday (Nov 24) at 12PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+)12PM (Sat 22nd Nov)2.5ft (0.8m) 7s
Best Surf12PM (Sat 22nd Nov)2.5ft (0.8m) 7s
Most Powerful12PM (Sun 23rd Nov)13ft (4.0m) 10s

Table - best surf conditions forecast for Porth Ceriad over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 19mm), heaviest on Fri night. Very mild (max 13°C on Sat night, min 6°C on Thu night). Winds increasing (calm on Fri morning, gales from the WSW by Sun afternoon).

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sun night. Very mild (max 10°C on Wed afternoon, min 7°C on Tue night). Winds decreasing (near gales from the N on Sun night, calm by Tue night).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thu
27
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
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
See all maps
Wave Height (m) & direction (?)
0.1
W
0.1
W
0.1
W
1.8
SW
1.1
SW
0.8
SW
1.8
SSW
3.5
WSW
3.5
W
1.3
WSW
0.7
SW
0.4
SW
0.2
WSW
0.1
W
0.1
SW
0.1
W
0.1
W
0.7
WSW
2
WSW
1.8
WSW
1.7
WSW
Period(s) (?)12151567768109988111212114677
Wave
Graph
(?)Metric surfscale
Energy kJ (?)345207116542221371243731277186353313325344305
Wind
(km/h)
20
NNE
5
ESE
25
SW
50
SSW
25
NW
20
SW
45
SSW
50
W
55
WSW
50
NW
50
N
50
N
35
N
30
N
30
N
10
NE
10
SSE
25
WSW
35
WSW
35
SW
40
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offglasscross-
on		oncross-
off		cross-
on		oncrosscross-
on		cross-
off		offoffoffoffoffcross-
off		oncross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
8:26AM
4.12
8:43PM
3.97
8:59AM
4.10
9:17PM
3.87
9:32AM
4.03
9:51PM
3.73
10:08AM
3.91
10:27PM
3.56
10:47AM
3.77
11:07PM
3.37
11:30AM
3.62
11:55PM
3.19
12:20PM
3.48
Low Tide
/ height (m)
3:03AM
0.67
3:25PM
0.61
3:35AM
0.74
4:01PM
0.68
4:10AM
0.84
4:40PM
0.80
4:47AM
0.97
5:23PM
0.95
5:28AM
1.11
6:11PM
1.10
6:13AM
1.25
7:03PM
1.20
7:06AM
1.37
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thu
27
Sunrise-7:50--7:52--7:52--7:54--7:56--7:58--8:00-
Sunset--4:15--4:15--4:14--4:13--4:12--4:10--4:09
clear
part cloud
cloud
rain showers
clear
cloud
rain showers
part cloud
part cloud
light rain
part cloud
part cloud
rain showers
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
Rain (mm)
---10--9--5--1--------
Temp. °C778101010139109999998910111211
Feels °C (?)0411455-2-3-2-2-2012453453
  • 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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Latest Updates

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View detailed surf forecast for Porth Ceriad at:
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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 12 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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