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Surf Forecasts:

Trefor surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 11 am Tuesday 20 Jan 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
7.5° C
 (Which is slightly cooler than normal)

How big are the waves at Trefor today?

The current surf forecast for Trefor at 2PM is: 1.3m 8s primary swell from a Southwest direction and 0.1m 16s secondary swell from a Southwest direction (forecast issued at 11:00am January 20). An open ocean swell of 1.7m 5s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (GMT) & DateWave HeightWave Period
Morning (20 Jan)3ft (0.9m)6s
Afternoon (20 Jan)4.5ft (1.4m)9s
Evening (20 Jan)2.5ft (0.7m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
2
2
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
SW
1
SW
1.4
SW
1.8
SSW
0.7
SW
1.6
SW
1.6
SW
1.4
SW
1.2
SW
0.9
SW
0.7
SW
0.8
SW
1
SW
0.9
SW
1
SW
0.7
WSW
0.8
WSW
1.3
SW
0.9
WSW
1.1
SW
0.9
SW
0.8
SW
0.8
SW
0.7
SW
Period(s) (?)679888999999999161616151510997
Wave
Graph
(?)Metric surfscale
Energy kJ (?)479630042463311370318225129741091521231522293397934094921671229952
Wind
(km/h)
50
SE
60
SE
50
SE
30
SSW
35
SSE
30
SSE
30
SSE
25
SE
30
ESE
45
ESE
30
SE
35
SE
30
SSE
25
SE
25
SE
30
SE
20
SE
20
SE
15
SSE
15
WSW
20
SSE
20
ESE
35
ESE
45
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off		offoffoffcross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffoffcross-
off		offoffcrossoffcross-
off		cross-
off		cross-
off
High Tide
/ height (m)
9:29AM
3.74
9:45PM
3.37
10:01AM
3.83
10:19PM
3.39
10:35AM
3.86
10:56PM
3.37
Low Tide
/ height (m)
4:36PM
0.21
4:42AM
0.32
5:13PM
0.18
5:17AM
0.34
5:49PM
0.21
5:54AM
0.44
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise8:18-------8:17-------8:15-------
Sunset--4:37-------4:39-------4:42-----
cloud
light rain
light rain
light rain
light rain
part cloud
part cloud
cloud
cloud
light rain
cloud
light rain
rain showers
part cloud
cloud
cloud
rain showers
cloud
rain showers
rain showers
cloud
cloud
part cloud
cloud
Rain (mm)
-1231----1-44---1-11----
Temp. °C889876666711101099998877677
Feels °C (?)-3-4-21-2-2-10-2-3534433434320-1-3
  • 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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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 Trefor 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 Trefor at:
surf-forecast.com

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