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Surf Forecasts:

Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle12 Day Weather and Surf, issued 5 am Tuesday 10 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 Tuesday (Feb 10) at 9AM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.8m and 10s. 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 2.3m 14s and forecast to arrive on Wednesday (Feb 11) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Feb 15) at 12AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 10th Feb)2.5ft (0.8m) 10s
Best Surf 9PM (Thu 12th Feb)5ft (1.5m) 15s
Most Powerful 6PM (Wed 11th Feb)7.5ft (2.3m) 14s

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 12mm), heaviest on Tue afternoon. Mild temperatures (max 9°C on Tue morning, min 7°C on Thu night). Mainly fresh winds.

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Sun night. Very mild (max 10°C on Sun night, min 3°C on Sat night). Winds increasing (calm on Sat afternoon, near gales from the SSE by Sun morning).

Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
SW
0.9
SW
0.7
SW
1.3
SW
2.3
SW
1.6
SW
0.9
WSW
1.5
WSW
1.4
WSW
1.1
SW
0.8
WSW
0.4
WSW
0.3
SW
0.2
WSW
0.4
SW
2.2
SSW
1.4
SW
1.4
WSW
1.1
SW
1.6
WSW
1.6
WSW
Period(s) (?)10109131413171614131210141314895566
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1341778758118928804591141774394180422918466502819155203186
Wind
(km/h)
20
ESE
15
SE
10
SSE
25
SW
35
SSW
10
W
25
WNW
15
WNW
15
SE
25
ENE
40
NE
25
NNE
20
NNE
10
NE
35
SSE
55
SSE
45
S
35
SE
30
W
30
WSW
40
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcrosscross-
off		cross-
on		cross-
on		cross-
on		offcross-
off		crosscross-
on		cross-
on		crosscross-
off		cross-
off		cross-
off		offcross-
on		crosscross
High Tide
/ height (m)
2:26PM
2.59
3:12AM
2.48
4:03PM
2.44
4:52AM
2.50
5:34PM
2.51
6:06AM
2.69
6:34PM
2.68
6:55AM
2.94
7:16PM
2.89
7:32AM
3.21
7:50PM
3.09
8:04AM
3.49
8:20PM
3.29
Low Tide
/ height (m)
9:07PM
1.47
9:55AM
1.53
10:53PM
1.55
11:53AM
1.47
12:25AM
1.39
1:03PM
1.22
1:19AM
1.13
1:48PM
0.93
1:58AM
0.84
2:25PM
0.63
2:34AM
0.57
3:00PM
0.35
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Sunrise7:46--7:43--7:41--7:39--7:37--7:35--7:33--
Sunset-5:19--5:21--5:22--5:24--5:27--5:28--5:30-
part cloud
light rain
light rain
light rain
light rain
rain showers
cloud
part cloud
part cloud
cloud
cloud
clear
clear
cloud
light rain
light rain
cloud
mod rain
part cloud
light rain
part cloud
Rain (mm)
-51141--------22-8-1-
Temp. °C99999988855455548101098
Feels °C (?)577425244-2-4-4-11-1-82542-1
  • 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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