Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Trefor surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 11 pm 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 6AM is: 1.3m 9s primary swell from a Southwest direction (forecast issued at 11:00pm January 20). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (21 Jan)3.5ft (1.1m)9s
Afternoon (21 Jan)2.5ft (0.7m)9s
Evening (21 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
Wednesday
21
Thursday
22
Friday
23
9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
0
0
0
0
0
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SSW
1.3
SW
1.3
SW
1.3
SW
1.1
SW
0.8
SW
0.7
SW
0.7
SW
0.7
SW
0.7
SW
1
SW
0.7
WSW
0.7
WSW
0.7
WSW
0.7
WSW
0.9
SW
0.8
SW
0.6
SW
0.5
SW
0.5
SW
0.6
SW
0.6
WSW
1.2
WSW
1.7
WSW
Period(s) (?)8999999988101617161515109997181717
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2232542352751729376747171188234252223204365136623940312237441626
Wind
(km/h)
25
SSE
25
SSE
30
SSE
20
SE
40
ESE
50
ESE
30
SE
35
SE
35
SE
30
SE
25
SE
15
ESE
20
ESE
20
SE
20
ESE
15
ESE
10
S
30
SSE
30
ESE
45
ESE
45
ESE
30
ESE
20
SSE
20
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offoffcross-
off		cross-
off		cross-
off		cross-
off		offcross-
off
High Tide
/ height (m)
9:45PM
3.37
10:01AM
3.83
10:19PM
3.39
10:35AM
3.86
10:56PM
3.37
11:12AM
3.81
Low Tide
/ height (m)
4:42AM
0.32
5:13PM
0.18
5:17AM
0.34
5:49PM
0.21
5:54AM
0.44
Wednesday
21
Thursday
22
Friday
23
Sunrise----8:17-------8:15-------8:14---
Sunset------4:39-------4:42-------4:44-
rain showers
clear
part cloud
cloud
cloud
light rain
cloud
light rain
light rain
rain showers
cloud
cloud
cloud
light rain
light rain
light rain
light rain
part cloud
cloud
cloud
light rain
light rain
light rain
part cloud
Rain (mm)
2----3-221---1111---134-
Temp. °C6777681110101099988887776656
Feels °C (?)-1102-3-35333454335500-3-4-101
  • 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

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

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

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest