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Surf Forecasts:

Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 5 am Thursday 05 Feb 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Porth Dinllaen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Dinllaen sea temperature is
7.6° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Porth Dinllaen this week:

The surf forecast for Porth Dinllaen over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Feb 06) at 9PM. The primary swell is predicted to be 0.9m and 14s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Porth Dinllaen in the next 12 days are 1.5m 18s and forecast to arrive on Thursday (Feb 12) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Thursday (Feb 05) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Fri 6th Feb)3ft (0.9m) 14s
Best Surf 6PM (Wed 11th Feb)4.5ft (1.3m) 20s
Most Powerful12AM (Thu 12th Feb)5ft (1.5m) 18s

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

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

Short Range Forecast Moderate rain (total 10mm), heaviest on Thu night. Very mild (max 10°C on Sat morning, min 6°C on Thu morning). Winds decreasing (near gales from the E on Thu morning, calm by Sat night).

Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Tue night. Very mild (max 10°C on Mon afternoon, min 7°C on Mon night). Winds increasing (light winds from the SSE on Sun morning, fresh winds from the SE by Sun night).

Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
1
0
1
0
1
0
0
0
0
0
1
0
0
0
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.2
WSW
0.6
WSW
0.4
WSW
0.7
SW
0.4
WSW
1
SW
1.1
SW
1
SW
0.8
SW
1.1
SW
0.5
SW
0.5
SW
0.6
SW
0.6
SW
0.6
WSW
1
WSW
0.8
WSW
0.4
WSW
0.6
SW
0.7
SW
1.5
WSW
Period(s) (?)2214171115141312111010107920171614101418
Wave
Graph
(?)Metric surfscale
Energy kJ (?)46129119117893904242731372354845424727258030676842141564
Wind
(km/h)
50
E
50
E
30
E
25
E
20
E
15
ESE
15
E
15
ENE
5
N
10
SSE
25
SSE
35
SE
30
ESE
35
ESE
25
ESE
20
ESE
25
ESE
30
ESE
15
SE
15
SE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		offcross-
off		offoffoffoffoffoffoffoffoffoff
High Tide
/ height (m)
10:39AM
4.05
11:01PM
3.47
11:17AM
3.83
11:38PM
3.30
11:56AM
3.54
12:17AM
3.09
12:36PM
3.20
12:59AM
2.87
1:22PM
2.87
1:51AM
2.64
2:26PM
2.59
3:12AM
2.48
4:03PM
2.44
Low Tide
/ height (m)
5:47PM
0.06
5:51AM
0.35
6:21PM
0.33
6:24AM
0.59
6:54PM
0.64
6:58AM
0.85
7:28PM
0.95
7:37AM
1.12
8:08PM
1.24
8:28AM
1.36
9:07PM
1.47
9:55AM
1.53
10:53PM
1.55
Thursday
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Sunrise7:54--7:52--7:50--7:50--7:48--7:46--7:43--
Sunset-5:08--5:10--5:13--5:15--5:16--5:19--5:21-
cloud
light rain
mod rain
light rain
cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
cloud
light rain
light rain
part cloud
cloud
light rain
mod rain
light rain
cloud
cloud
Rain (mm)
-163--------11--162--
Temp. °C67788810989999109778898
Feels °C (?)-5-4-1344654432122111455
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porth Dinllaen surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Porth Dinllaen at:
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Information about the Porth Dinllaen Surf forecast

The above surf forecast table for Porth Dinllaen provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Porth Dinllaen can be found by selecting the local surf guide option on the grey menu. Our Porth Dinllaen 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 Dinllaen) 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 Dinllaen 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.

Are you planning a holiday in Lleyn Peninsula? If you are looking for accommodation near Porth Dinllaen, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 29 km (18 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Anglesey which is 35 km (22 miles) away, Holyhead, Bangor and Llandudno.

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