Trefor surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 5 pm Friday 20 Mar 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Trefor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trefor sea temperature is
8.8° C
(Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Trefor today?

The current surf forecast for Trefor at 9PM is: 0.1m 8s primary swell from a Southwest direction (forecast issued at 05:00pm March 20). The wind direction is predicted to be glassy.

Time (GMT) & DateWave HeightWave Period
Morning (20 Mar)--
Afternoon (20 Mar)0.5ft (0.1m)8s
Evening (20 Mar)0.5ft (0.1m)8s

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


Updates in  hr  min  s Forecast update imminent
Friday
20
Saturday
21
Sunday
22
Monday
23
3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM
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
Wave Height (m) & direction (?)
0.1
SW
0.1
W
0.1
SW
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
W
0.1
SW
0.1
SW
0.1
SW
0.1
SW
0.2
WSW
0.1
SW
0.2
WSW
0.3
SW
0.3
SW
Period(s) (?)815811111414131313131313131313121211111010109
Wave
Graph
(?)Metric surfscale
Energy kJ (?)3422244433333337665124101514
Wind
(km/h)
5
WNW
5
NNW
5
NNE
0
E
5
SSW
5
ESE
0
SSE
5
W
5
WNW
0
SSW
5
SSE
10
SSE
10
SSE
10
SSE
5
SE
5
NNW
10
NNW
10
N
20
NE
15
NE
10
NE
10
NE
5
SE
15
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glassglassglassglassglassglasscross-
on
cross-
on
glassoffoffoffoffglassglassononcross-
on
cross-
on
cross-
on
crosscross-
off
cross-
off
High Tide
/ height (m)
9:32PM
3.90
9:49AM
4.20
10:09PM
3.91
10:29AM
4.09
10:49PM
3.81
11:11AM
3.83
Low Tide
/ height (m)
4:18PM
-0.20
4:30AM
-0.01
4:56PM
-0.09
5:10AM
0.08
5:36PM
0.14
5:53AM
0.26
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise------6:18-------6:16-------6:13-
Sunset-6:30-------6:30-------6:32------
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
Rain (mm)
------------------------
Temp. °C1110101099101111109988910109866567
Feels °C (?)988877889976457877312133
  • 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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