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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 Friday 21 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
12.2° 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 1.1m 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 3.5m 8s and forecast to arrive on Sunday (Nov 23) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Monday (Nov 24) at 6AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+)12PM (Sat 22nd Nov)3.5ft (1.1m) 7s
Best Surf 3AM (Fri 28th Nov)5ft (1.6m) 6s
Most Powerful 6PM (Sun 23rd Nov)11ft (3.5m) 8s

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 Heavy rain (total 35mm), heaviest during Fri night. Very mild (max 11°C on Sat night, min 8°C on Fri night). Winds increasing (light winds from the SW on Sat afternoon, near gales from the W by Sun afternoon).

Days 3-6 Weather Summary Some drizzle, heaviest during Wed night. Very mild (max 12°C on Wed night, min 8°C on Mon night). Winds increasing (light winds from the ENE on Tue night, fresh winds from the SW by Thu afternoon).

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
SW
1.5
SW
0.8
SW
1.1
SW
2.2
W
3
WSW
1.9
NW
0.9
WSW
0.6
WSW
0.4
SW
0.4
SW
0.4
SW
0.3
SW
0.2
WSW
1.1
SW
1.4
SW
1
SSW
0.9
SW
1.4
SW
1.5
SW
0.9
SW
Period(s) (?)67747878881198105664667
Wave
Graph
(?)Metric surfscale
Energy kJ (?)176229734942712313719839163122111056139803112417273
Wind
(km/h)
50
SSW
20
NW
10
SW
35
SSW
40
W
55
WSW
50
NW
30
NNE
35
N
25
N
20
N
20
N
5
SE
25
SW
35
SSW
30
SSW
25
SW
35
SW
30
WSW
5
WSW
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
off		cross-
on		cross-
on		crosscrosscross-
off		offoffoffoffoffcross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		crosson
High Tide
/ height (m)
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
12:53AM
3.05
1:22PM
3.39
Low Tide
/ height (m)
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
8:00PM
1.23
8:06AM
1.43
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
Sunrise-7:52--7:52--7:54--7:56--7:58--8:00--8:02-
Sunset--4:15--4:14--4:13--4:12--4:10--4:09--4:08
heavy rain
rain showers
cloud
rain showers
rain showers
light rain
thunderstorm
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
rain showers
cloud
cloud
light rain
cloud
part cloud
Rain (mm)
131-11118--------1--2--
Temp. °C10101011910991098991010121212121112
Feels °C (?)2573-1-2-312334443775698
  • 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

Latest Updates

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Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

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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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