Llangrannog surfForecast / Wales – Mid / UK

information circle48hr Weather and Surf, issued 12 am Thursday 21 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Llangrannog surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llangrannog sea temperature is
12.4° C
(Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Llangrannog today?

The current surf forecast for Llangrannog at 3AM is: 1.1m 8s primary swell from a Southwest direction and 0.5m 11s secondary swell from a West-southwest direction (forecast issued at 12:00am May 21). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (21 May)3.5ft (1.0m)8s
Afternoon (21 May)3ft (0.9m)8s
Evening (21 May)2.5ft (0.7m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Wed night. Very mild (max 18°C on Thu afternoon, min 12°C on Wed night). Wind will be generally light.

Thursday
21
Friday
22
Saturday
23
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
1
1
1
1
1
1
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)
0.9
WSW
11
1.1
SW
8
1.1
SW
7
1
SW
8
0.9
WSW
8
0.9
SW
8
0.8
WSW
8
0.7
WSW
9
0.7
WSW
9
0.8
WSW
10
0.9
SW
10
0.9
WSW
11
0.8
WSW
11
0.9
WSW
11
0.9
WSW
11
0.8
WSW
10
0.8
WSW
10
0.7
WSW
10
0.7
WSW
10
0.6
WSW
10
0.5
WSW
10
0.5
WSW
10
0.5
WSW
9
0.5
WSW
9
Wave Graph
Metric surfscale
Energy kJ
183
131
118
110
103
91
86
70
78
117
139
200
133
183
180
138
118
90
86
77
55
54
50
49
Wind (km/h)
25
S
30
S
25
SSW
25
SSW
20
SSW
20
SSW
15
S
25
SSE
25
SSE
20
SSE
15
S
20
S
20
SSW
15
SSW
10
SSW
10
S
10
SSE
5
SSW
5
SW
5
WSW
10
WNW
5
NW
5
NW
0
SE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
cross-on
on
glassy
glassy
High Tide
11:29PM4.07m
12:00PM3.54m
00:23AM3.80m
12:58PM3.19m
1:24AM3.53m
2:06PM2.92m
Low Tide
6:54AM0.47m
7:08PM0.87m
7:56AM0.64m
8:09PM1.04m
9:02AM0.78m
9:15PM1.15m
part cloud
light rain
part cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:15
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:14
9:15
9:16
1
Temp °C
12
13
13
15
17
18
17
15
15
14
14
15
18
18
17
15
14
14
13
15
17
16
15
15
7
8
8
11
14
15
15
11
11
10
12
12
16
16
16
14
13
13
13
15
16
15
14
15
Swell 1
Height (m)
Direction
Period (s)
0.9
WSW
11
0.4
WSW
11
0.3
WSW
11
0.7
SW
8
0.1
W
15
0.8
WSW
8
0.7
WSW
9
0.7
WSW
9
0.8
WSW
10
0.9
SW
10
0.9
WSW
11
0.8
WSW
11
0.9
WSW
11
0.9
WSW
11
0.8
WSW
10
0.8
WSW
10
0.7
WSW
10
0.7
WSW
10
0.6
WSW
10
0.5
WSW
10
0.5
WSW
10
0.5
WSW
9
0.5
WSW
9
Energy kJ
183
40
24
64
4
86
70
78
117
139
200
133
183
180
138
118
90
86
77
55
54
50
49
Swell 2
Height (m)
Direction
Period (s)
0.1
W
15
0.1
W
15
0.1
W
15
0.2
W
3
Energy kJ
4
4
4
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.5
S
3
1.1
SW
8
1.1
SW
7
1
SW
8
0.9
WSW
8
0.9
SW
8
0.6
S
3
0.4
SSE
3
0.3
SSW
3
0.2
WSW
3
Energy kJ
5
131
118
110
103
91
7
3
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
25
131
131
131
62
64
64
57
62
53
18
25
62
0
0
0
0
0
0
57
57
57
57
55
Best forecast wave conditions in Mid Wales
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
4
3
3
2
3
3
3
2
2
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
5
5
5
5
5
4
5
4
4
5
7
8
7
6
5
5
6
7
7
8
8
7
6
6
  • 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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