Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 11 pm Friday 13 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
7.7° 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 Sunday (Feb 15) at 9AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.3m and 12s. Another secondary swell of 0.4m and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Porth Dinllaen in the next 12 days are 4.5m 12s and forecast to arrive on Saturday (Feb 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Wednesday (Feb 18) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 15th Feb)4ft (1.2m) 8s
Best Surf 9AM (Sun 15th Feb)4ft (1.2m) 8s
Most Powerful12AM (Sat 21st Feb)15ft (4.5m) 12s

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 14mm), heaviest on Sat night. Mild temperatures (max 9°C on Sun morning, min 3°C on Sat night). Winds increasing (light winds from the NNW on Sat morning, near gales from the SSE by Sat night).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Mon night. Mild temperatures (max 8°C on Mon night, min 2°C on Tue night). Winds increasing (light winds from the ENE on Tue afternoon, near gales from the E by Wed night).

Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Fri
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
WSW
0.4
SW
0.4
SW
1.9
SSW
1.2
SW
1.5
SW
2.1
WSW
2
W
1.9
WSW
1.3
WSW
0.9
NW
0.5
SW
0.4
SW
0.4
SW
0.3
WSW
0.9
WSW
0.7
SW
0.9
WSW
1.3
SW
2.5
SSW
3
SW
Period(s) (?)1213136856669698101512101111810
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5544422841829735234529027654372324442431042194298981594
Wind
(km/h)
25
NNE
5
NNW
20
SSW
50
SSE
10
SSW
45
WSW
45
W
40
W
40
W
35
NNW
25
NNE
15
ENE
35
ESE
45
ESE
50
E
55
E
30
E
20
ESE
40
SSE
30
S
40
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
off		cross-
off		cross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off
High Tide
/ height (m)
6:55AM
2.94
7:16PM
2.89
7:32AM
3.21
7:50PM
3.09
8:04AM
3.49
8:20PM
3.29
8:34AM
3.74
8:51PM
3.46
9:04AM
3.94
9:23PM
3.60
9:37AM
4.08
9:56PM
3.69
10:11AM
4.12
Low Tide
/ height (m)
1:19AM
1.13
1:48PM
0.93
1:58AM
0.84
2:25PM
0.63
2:34AM
0.57
3:00PM
0.35
3:08AM
0.35
3:35PM
0.12
3:42AM
0.19
4:09PM
-0.03
4:16AM
0.12
4:45PM
-0.08
4:52AM
0.13
5:20PM
-0.02
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Fri
20
Sunrise-7:37--7:35--7:33--7:31--7:30--7:28--7:26-
Sunset--5:27--5:28--5:30--5:31--5:34--5:36--5:37
clear
part cloud
cloud
light rain
rain showers
rain showers
rain showers
cloud
light rain
rain showers
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
cloud
Rain (mm)
---5143-13--------1--
Temp. °C455699778855444456599
Feels °C (?)-52-1-23-1-3-2-12-20-2-8-9-9-20-321
  • 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

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for Porth Dinllaen:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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:
surf-forecast.com

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest