Porth Ceriad surf break

Porth Ceriad surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 6 pm Thursday 10 Jul 2025 BST
Forecast update in 43 min 34 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
62.1°F
(Which is 3.6°F warmer than normal for this time of year)


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 Tuesday (Jul 15) at 4AM. The primary swell is predicted to be 3ft and 6s period with a secondary swell of 0ft and 12s. 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 2ft 11s and forecast to arrive on Thursday (Jul 17) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2ft 4s period and expected on Tuesday (Jul 15) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 15th Jul)3ft (0.9m) 6s
Best Surf 4AM (Tue 15th Jul)3ft (0.9m) 6s
Most Powerful 7PM (Thu 17th Jul)2ft (0.6m) 11s

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

Updates in 43 min 34 s Forecast update imminent
Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (ft) & direction (?)
0.5
W
0.5
W
0.5
W
0.5
W
1.5
SW
2
SW
3
SW
2
WSW
1.5
SW
1.5
SW
2
SW
2.5
SW
3.5
SW
2.5
SW
1
WSW
1.5
SW
1.5
WSW
1.5
WSW
1.5
SW
1.5
SW
0.5
WSW
0.5
WSW
2
SW
2.5
SW
1.5
SW
0.5
WSW
0.5
WSW
3
SW
4.5
WSW
Period(s) (?)-------1214111135666444561110101099884445645
Wave
Graph
(?)Metric surfscale
Energy (?)000000038241140662824101524565939503737212071715217552490
Wind
(mph)
5
SSW
5
ESE
5
SE
5
NW
5
NE
5
SE
5
NW
10
SE
5
ESE
5
NW
10
SSW
10
SW
20
SW
15
W
10
W
10
SW
10
SSW
10
S
5
S
5
S
5
S
5
SW
0
SSW
10
NNW
5
WNW
5
NNE
5
E
5
NNW
10
E
5
SE
10
WSW
5
SW
15
S
15
SSW
15
WSW
10
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onglassglassglasscross-
off
cross-
on
cross-
off
cross-
on
cross-
on
cross-
off
oncross-
on
cross-
on
crosscrosscross-
on
onononononcross-
on
glassoffcross-
off
offcrosscross-
off
crosscross-
on
crosscross-
on
oncross-
on
crosscross-
on
High Tide
/ height (ft)
9:00PM
12.99
9:19AM
12.47
9:38PM
13.62
9:56AM
12.83
10:16PM
14.14
10:35AM
13.03
10:55PM
14.47
11:15AM
13.03
11:35PM
14.53
11:58AM
12.86
12:18AM
14.31
12:44PM
12.5
1:05AM
13.75
1:35PM
12.01
1:58AM
12.99
2:33PM
11.48
3:01AM
12.21
3:41PM
11.12
4:14AM
11.68
4:54PM
11.19
5:28AM
11.61
6:03PM
11.75
6:35AM
11.98
Low Tide
/ height (ft)
4:19AM
2.1
4:30PM
2.13
4:59AM
1.71
5:08PM
1.9
5:39AM
1.48
5:45PM
1.9
6:19AM
1.41
6:23PM
2.07
6:59AM
1.54
7:01PM
2.4
7:40AM
1.8
7:42PM
2.79
8:24AM
2.26
8:27PM
3.28
9:14AM
2.79
9:24PM
3.71
10:15AM
3.28
10:39PM
3.97
11:32AM
3.58
12:11AM
3.77
12:55PM
3.41
1:32AM
3.08
Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
Sunrise--5:05--5:07--5:07--5:09--5:11--5:11--5:13--5:15--5:16--5:16--5:18--5:20
Sunset9:39--9:38--9:37--9:37--9:37--9:36--9:34--9:32--9:31--9:30--9:30--9:28--
clearclearclearclearclearclearclearclearclearpart cloudpart cloudpart cloudclearclearclearclearpart cloudpart cloudclearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudrain showersrain showersrain showersmod rain
Rain (in)
--------------------------------0.10.10.00.3
Temp. °F646468737375757573757261596357595961616163636361636366687070646161616159
Feels °F (?)646466727075737373757057485452555559595961616359636164647068595955545554

Short Range Forecast: Mostly dry. Warm (max 75°F on Sat morning, min 63°F on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 75°F on Sun afternoon, min 55°F on Mon night). Winds increasing (light winds from the NW on Sun afternoon, strong winds from the WSW by Mon afternoon).

Days 6-9 Weather Summary Mostly dry. Very mild (max 66°F on Sat morning, min 59°F on Thu night). Wind will be generally light.

Long Range Forecast: Moderate rain (total 0.6in), heaviest on Tue morning. Warm (max 70°F on Sat night, min 57°F on Tue morning). Winds increasing (light winds from the NE on Sat night, fresh winds from the S by Mon morning).

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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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