Porth Dinllaen surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 12 am Friday 22 May 2026 BST
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
12.0° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at Porth Dinllaen today?

The current surf forecast for Porth Dinllaen at 6AM is: 0.4m 8s primary swell from a West-southwest direction and 0.1m 14s secondary swell from a West direction (forecast issued at 12:00am May 22). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (22 May)1.5ft (0.4m)9s
Afternoon (22 May)2.5ft (0.8m)7s
Evening (22 May)1.5ft (0.4m)10s

Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.

Friday
22
Saturday
23
Sunday
24
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
7
0.5
SW
8
0.4
WSW
9
0.4
SW
9
0.9
SW
7
0.8
SW
7
0.8
SW
11
0.4
WSW
10
0.5
SW
10
0.5
SW
10
0.5
SW
10
0.7
SW
10
0.6
SW
10
0.6
SW
10
0.4
SW
9
0.4
SW
9
0.4
SW
9
0.3
SW
9
0.3
SW
8
0.3
SW
8
0.4
SW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
Wave Graph
Metric surfscale
Energy kJ
65
28
32
21
77
64
159
42
50
48
48
98
76
57
21
20
19
12
11
11
17
10
10
10
Wind (km/h)
20
SSE
20
SSE
20
S
20
S
20
SSW
20
SSW
20
SSW
20
S
15
SSW
15
SSW
15
S
20
SSW
15
SSW
15
SSW
15
S
15
SSE
15
SSE
10
SSE
10
SSE
10
S
10
SSW
10
SW
5
S
10
S
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
High Tide
1:03AM3.55m
1:44PM2.95m
2:08AM3.33m
2:59PM2.73m
3:23AM3.17m
4:24PM2.68m
Low Tide
8:35AM0.43m
8:51PM0.88m
9:39AM0.58m
9:55PM1.01m
10:47AM0.67m
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:09
5:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:19
9:21
9:22
Temp °C
17
16
14
14
15
16
15
14
14
13
12
12
12
14
14
14
13
13
13
14
16
17
19
19
13
12
11
11
12
13
12
11
12
11
10
9
10
11
11
11
10
10
11
12
14
14
17
16
Swell 1
Height (m)
Direction
Period (s)
0.8
SW
7
0.5
SW
8
0.4
WSW
9
0.4
SW
9
0.4
SW
10
0.4
SW
11
0.4
WSW
10
0.5
SW
10
0.5
SW
10
0.5
SW
10
0.7
SW
10
0.6
SW
10
0.6
SW
10
0.4
SW
9
0.4
SW
9
0.4
SW
9
0.4
SW
4
0.3
SW
4
0.3
SW
8
0.4
SW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
Energy kJ
65
28
32
19
28
29
42
50
48
48
98
76
57
21
20
19
5
2
11
17
10
10
10
Swell 2
Height (m)
Direction
Period (s)
0.1
W
15
0.1
W
14
0.3
WSW
10
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.3
SW
9
0.3
SW
8
0.3
SW
4
0.1
W
14
0.1
W
14
0.1
W
13
0.1
W
13
Energy kJ
4
4
21
7
7
7
12
11
2
4
4
3
3
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
14
0.1
SW
14
0.1
W
14
Energy kJ
8
8
4
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.6
SSW
4
0.8
SSW
5
0.9
SSW
6
0.9
SW
7
0.8
SW
7
0.8
SW
11
0.8
SW
5
0.6
SW
5
0.6
SW
4
0.4
SW
4
0.4
SW
4
0.4
SW
4
0.4
SW
4
Energy kJ
2
15
33
59
77
64
159
28
17
12
6
3
6
6
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
87
47
31
149
13
13
87
87
13
13
87
142
13
13
142
120
120
120
120
127
127
141
127
127
Best forecast wave conditions in Lleyn Peninsula
Rating
(10 max)
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
3
3
3
3
3
3
2
3
2
2
2
2
2
1
3
2
2
2
1
2
1
1
2
Header Global
Rating
(10 max)
4
5
7
7
7
6
5
7
5
5
6
7
8
7
6
5
5
5
5
5
6
5
5
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

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