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Surf Forecasts:

Porth Nefyn surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 11 am Sunday 18 Jan 2026 GMT
Forecast update in hr  min  s Forecast update imminent
Porth Nefyn surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Nefyn sea temperature is
8.0° C
 (Which is slightly cooler than normal)

How big are the waves at Porth Nefyn today?

The current surf forecast for Porth Nefyn at 4PM is: 0.5m 6s primary swell from a Southwest direction (forecast issued at 11:00am January 18). The wind direction is predicted to be offshore.

Time (GMT) & DateWave HeightWave Period
Morning (18 Jan)2ft (0.6m)6s
Afternoon (18 Jan)1.5ft (0.5m)7s
Evening (18 Jan)1.5ft (0.4m)7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
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
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SSW
0.5
SW
0.5
SW
0.5
SW
0.4
SW
0.5
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.6
SW
0.6
SW
0.7
SW
0.8
SW
1.3
SSW
1
SW
1
SW
1
SW
1.6
SW
1.7
SSW
1.2
SSW
0.4
SW
1.9
SSW
2.2
SSW
Period(s) (?)6776744445555566679881278
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2421211616964581823293512866689140233517654345715
Wind
(km/h)
15
SE
15
SSE
15
S
15
SSE
15
S
15
S
15
SSE
10
SSE
10
SE
15
SSE
15
SSE
20
SSE
30
SE
40
SE
25
SSE
40
SE
50
SE
55
SE
60
SE
50
SSE
30
SSE
40
SSE
45
SSE
40
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffoffoffcross-
off		offoffoffoffoffoffoffoffoffoffoffoffoffoffoff
High Tide
/ height (m)
8:22AM
3.45
8:39PM
3.25
8:55AM
3.62
9:11PM
3.33
9:27AM
3.75
9:44PM
3.38
Low Tide
/ height (m)
3:23PM
0.47
3:31AM
0.47
3:59PM
0.32
4:06AM
0.37
4:35PM
0.23
4:41AM
0.33
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Sunrise8:19-------8:18-------8:18-------
Sunset--4:36-------4:37-------4:38-----
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
cloud
rain showers
clear
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
Rain (mm)
--------------1--2124111
Temp. °C777787777888887788886778
Feels °C (?)3333433434431-10-2-4-4-5-2-2-2-3-1
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porth Nefyn 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 Porth Nefyn at:
surf-forecast.com

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