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Surf Forecasts:

Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 11 am Tuesday 27 Jan 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
7.9° 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 Wednesday (Jan 28) at 3PM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.4m and 18s. 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 3.0m 12s and forecast to arrive on Tuesday (Jan 27) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 5s period and expected on Tuesday (Jan 27) at 3PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Wed 28th Jan)4.5ft (1.3m) 11s
Best Surf 9PM (Fri 30th Jan)4.5ft (1.3m) 17s
Most Powerful 9PM (Tue 27th Jan)10ft (3.0m) 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 Light rain (total 9mm), mostly falling on Tue morning. Mild temperatures (max 9°C on Tue morning, min 6°C on Wed night). Winds decreasing (gales from the SSE on Tue afternoon, moderate winds from the SE by Wed night).

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Sat night. Mild temperatures (max 9°C on Sat night, min 6°C on Sat morning). Winds increasing (light winds from the SE on Sat morning, strong winds from the SW by Sun morning).

Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
01
Monday
02
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
1
1
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
SW
1.6
SW
2.4
SW
1.3
SW
1.3
SW
1.3
SW
1.2
SW
0.9
SW
0.8
SW
0.7
WSW
1.4
SW
1.3
WSW
1.5
WSW
1.1
SW
0.9
WSW
1.5
SW
1.3
SW
1.3
SW
1.2
SW
1.1
SW
0.6
SW
Period(s) (?)910121211111091216181615161481110999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1234461711486384377279144167232127887591155136725038234121021749
Wind
(km/h)
40
SE
65
SSE
30
SSW
30
SE
25
SE
20
ESE
25
ESE
40
SE
45
SE
30
SSE
35
ESE
40
S
15
SE
15
S
40
SE
45
SSW
45
SW
45
SSE
50
SE
40
ESE
45
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off		offoffoffoffoffoffoffcross-
off		cross-
off		offcross-
off		offcross-
off		crossoffoffoffcross-
off
High Tide
/ height (m)
2:44PM
3.06
3:29AM
2.86
4:07PM
2.97
4:50AM
2.95
5:28PM
3.04
6:01AM
3.19
6:35PM
3.21
7:00AM
3.49
7:30PM
3.40
7:50AM
3.78
8:19PM
3.55
8:36AM
4.01
9:02PM
3.63
Low Tide
/ height (m)
9:15AM
1.11
10:07PM
1.03
10:47AM
1.12
11:35PM
1.02
12:15PM
0.92
12:50AM
0.83
1:23PM
0.59
1:48AM
0.57
2:19PM
0.25
2:37AM
0.33
3:07PM
-0.03
3:21AM
0.15
3:51PM
-0.19
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
01
Monday
02
Sunrise8:08--8:07--8:06--8:04--8:03--8:02--8:00--
Sunset-4:52--4:53--4:55--4:58--4:59--5:00--5:02-
rain showers
cloud
rain showers
part cloud
clear
clear
clear
cloud
rain showers
part cloud
cloud
rain showers
cloud
part cloud
rain showers
rain showers
part cloud
part cloud
cloud
cloud
cloud
Rain (mm)
5-1-----3--2--71-----
Temp. °C998897787887689998887
Feels °C (?)0-5-2131-1-1-3202242-2-10-2-1-2
  • 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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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.

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