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Surf Forecasts:

Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 5 pm 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 1.8m 18s and forecast to arrive on Thursday (Feb 12) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Feb 10) at 9PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Fri 6th Feb)3ft (0.9m) 14s
Best Surf 9PM (Fri 6th Feb)3ft (0.9m) 14s
Most Powerful 3AM (Thu 12th Feb)6ft (1.8m) 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. Mild temperatures (max 9°C on Sun morning, min 6°C on Thu afternoon). Winds decreasing (strong winds from the E on Thu afternoon, light winds from the NW by Sat afternoon).

Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Tue night. Very mild (max 10°C on Tue night, min 8°C on Sun night). Winds increasing (light winds from the SE on Sun afternoon, fresh winds from the SE by Tue morning).

Thu
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
1
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 (?)
0.6
WSW
0.4
WSW
0.6
SW
0.4
WSW
1.1
SW
1
SW
0.9
SW
0.8
SW
0.6
SW
0.6
SW
0.5
SW
0.7
SW
0.7
SW
0.3
WSW
0.7
WSW
0.8
WSW
0.5
SW
0.5
SW
0.4
SW
1.5
SW
1.5
WSW
Period(s) (?)14171115141212111010109821171699211817
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1291199489447306236140848246756986255310423811614141320
Wind
(km/h)
50
E
30
E
25
E
20
E
25
SSE
20
E
15
NNE
20
WSW
25
SSE
25
SSE
30
SE
25
ESE
25
SE
30
ESE
40
SE
35
ESE
35
SW
30
WSW
25
SSW
40
SSE
35
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		crosscross-
on		offcross-
off		offoffoffoffoffoffcrosscross-
on		cross-
off		offcross-
off
High Tide
/ height (m)
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
4:52AM
2.50
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
11:53AM
1.47
Thu
05
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Sunrise--7:52--7:50--7:50--7:48--7:46--7:43--7:41
Sunset5:08--5:10--5:13--5:15--5:16--5:19--5:21--
light rain
mod rain
light rain
cloud
rain showers
part cloud
part cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
cloud
mod rain
mod rain
light rain
rain showers
light rain
light rain
Rain (mm)
261-1--------2-8101151
Temp. °C7788888899999889109999
Feels °C (?)-202343443423330342431
  • 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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