Surf Break

Lat Long: 52.94° N 4.56° W

Porth Dinllaen Surf Forecast and Surf Report

Issued: 5 pm 26 Oct 2026 (local time)

Forecast update in  hr  min

Today's Porth Dinllaen sea temperature is
14.3°C
1.1° 

Porth Dinllaen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Porth Dinllaen surf forecast from 26 Oct 2026:

  • Most powerful swell: Tuesday 27 Oct, 12AM (local time) - 11ft (3.5m), 10s period, SW swell with 2,455 kJ wave energy.

Best Forecast Surf Conditions for Porth Dinllaen this week:

The most powerful waves expected at Porth Dinllaen in the next 16 days are 3.5m 10s and forecast to arrive on Tuesday (Oct 27) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Thursday (Oct 29) at 6AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful12AM (Tue 27th Oct)11ft (3.5m) 10s

Table - best surf conditions forecast for Porth Dinllaen over the next 16 days.


Short Range Forecast

Light rain (total 9mm), mostly falling on Mon night. Very mild (max 16°C on Mon night, min 11°C on Tue morning). Winds decreasing (gales from the SSW on Mon night, moderate winds from the SW by Wed morning).

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Fri night. Very mild (max 14°C on Fri night, min 10°C on Sat night). Winds decreasing (strong winds from the SSE on Thu night, light winds from the NNW by Fri night).

Mon
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
1
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
8
3.5
SW
10
3
WSW
9
2.4
WSW
12
2.1
WSW
6
2
WSW
7
1.4
SW
8
0.3
WSW
10
1.3
SSW
6
1.5
SSW
7
1.8
SSW
7
1.8
SW
8
1
SW
9
0.6
SW
10
0.5
SW
10
0.4
SW
9
0.4
SW
9
0.3
SW
8
0.3
SW
8
0.2
WSW
8
Wave Graph
Metric surfscale
Energy kJ
1023
2455
1618
1541
330
418
229
20
128
186
325
418
142
85
45
29
27
10
10
6
Wind (km/h)
50
SSW
65
SSW
50
WSW
45
WSW
40
WSW
35
WSW
25
SW
30
S
35
S
35
S
40
SSE
40
SSE
30
SSE
10
S
15
N
25
NNW
20
NNW
20
N
20
N
15
NE
Wind State
cross-off
cross-off
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-on
cross
High Tide
8:22PM4.04m
8:43AM3.97m
9:02PM4.07m
9:21AM4.01m
9:44PM3.97m
10:03AM3.93m
10:29PM3.75m
10:48AM3.76m
11:18PM3.43m
11:40AM3.52m
00:16AM3.06m
12:41PM3.25m
1:29AM2.75m
Low Tide
3:03PM0.13m
3:26AM0.01m
3:45PM0.07m
4:07AM0.10m
4:29PM0.10m
4:52AM0.27m
5:17PM0.21m
5:40AM0.50m
6:11PM0.39m
6:34AM0.76m
7:13PM0.59m
7:36AM0.98m
8:23PM0.73m
cloud
rain showers
part cloud
rain showers
part cloud
cloud
part cloud
light rain
part cloud
cloud
cloud
light rain
light rain
heavy rain
rain showers
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
7:05
—
—
7:07
—
—
7:09
—
—
7:09
—
—
7:11
—
—
7:13
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:00
—
—
4:58
—
—
4:55
—
—
4:53
—
—
4:52
—
—
4:50
—
—
4:47
—
 mm
—
6
—
2
—
—
—
1
—
—
—
1
2
12
1
—
—
—
—
—
Temp °C
15
16
11
12
13
14
14
13
12
13
12
13
13
14
12
11
11
10
10
9
Feels °C
7
5
0
2
4
8
9
8
5
6
5
7
9
12
9
6
6
6
6
5
  • 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
How to use the Wavefinder 

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Lleyn

  1. West Coast Surf: ‘Porth Neigwl: It is messy, onshore and a moderate size at high tide this morning..’

    Hells Mouth (Porth Neigwl), 14 km away
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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.


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 16 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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