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Surf Forecasts:

Porth Colmon surfForecast / Wales – Lleyn / UK

information circle48hr Weather and Surf, issued 6 pm Saturday 30 Aug 2025 BST
Forecast update in hr  min  s Forecast update imminent
Porth Colmon surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Colmon sea temperature is
17.2° C
 (Which is 1.4°C warmer than normal for this time of year)

How big are the waves at Porth Colmon today?

The current surf forecast for Porth Colmon at 7PM is: 2.5m 8s primary swell from a Southwest direction (forecast issued at 06:00pm August 30). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (30 Aug)--
Afternoon (30 Aug)7ft (2.1m)6s
Evening (30 Aug)8ft (2.5m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Saturday
30
Sunday
31
Monday
01
Tuesday
02
4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM
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 (?)
2.4
SSW
2.5
SW
2.5
SW
2.5
SW
3
SW
3
SW
3
SW
3
SW
3.5
SW
3.5
SW
3
SW
2.5
SW
2.4
SW
2.2
SW
1.8
SW
1.8
SW
1.8
SW
1.9
SW
1.8
SW
1.5
SW
1.2
SW
1
SW
0.8
SW
0.8
SW
Period(s) (?)788888889998888887777778
Wave
Graph
(?)Metric surfscale
Energy (?)5007608388169791164110912871546176114159627105313934484063523392461601047982
Wind
(km/h)
55
S
50
SW
50
SW
50
SW
50
SW
45
SSW
50
SSW
55
SSW
55
SSW
55
S
50
S
45
SSW
40
SSW
30
SW
40
WSW
40
SW
40
SW
35
WSW
30
WSW
25
SW
15
SSW
15
S
15
S
10
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
1:07PM
3.08
1:30AM
2.98
1:52PM
2.82
2:23AM
2.68
3:02PM
2.60
3:58AM
2.51
Low Tide
/ height (m)
7:43PM
1.19
8:10AM
1.35
8:39PM
1.43
9:16AM
1.56
10:09PM
1.59
10:59AM
1.61
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Sunrise-----6:26-------6:26-------6:28--
Sunset-8:13-------8:09-------8:07------
light rain
clear
clear
clear
clear
part cloud
clear
clear
clear
thunderstorm
light rain
thunderstorm
thunderstorm
light rain
light rain
clear
rain showers
light rain
rain showers
rain showers
clear
part cloud
rain showers
rain showers
Rain (mm)
4--------122211-1211--11
Temp. °C181716161515151616161616151515151616151515151516
Feels °C (?)109776666677881088910101112121214
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Lleyn

  1. weather stationWind Update The wind is still cross-off at Porth Colmon (strong winds from the S at Caernarfon Airport 33 km from Porth Colmon). A 2.2m windswell from the SSW

    2 hours 3 minutes ago Porth Colmon
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33 km away, 2 h 3 min ago

39 km/h
S
0.0
17.2
Air / Water (°C)
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View detailed surf forecast for Porth Colmon at:
surf-forecast.com

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