Porth Colmon Surf Forecast

/ Wales – Lleyn (14 surf breaks) /

UK (473 surf breaks)

Surf Forecasts:

Porth Colmon surfForecast / Wales – Lleyn / UK

48hr Weather and Surf, issued 6 pm Friday 17 Oct 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 14.9° C
(Which is 1.1°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 11PM is: 0.1m 8s primary swell from a Southwest direction (forecast issued at 06:00pm October 17). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (BST) & Date	Wave Height	Wave Period
Morning (17 Oct)	-	-
Afternoon (17 Oct)	0.5ft (0.1m)	9s
Evening (17 Oct)	0.5ft (0.1m)	9s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 17			Saturday 18								Sunday 19								Monday 20
	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	W	W	SW	SW	SW	WSW	WSW	W	W	WSW	S	S	S	S	S	SSW	SW	SW	SW	SSW	SSW	SW	SW	SW
Period(s) (?)	9	9	8	8	8	8	8	12	15	10	6	7	8	8	8	9	9	9	8	8	8	8	9	10
Wave Graph (?)
kJ (?)	2	2	3	3	3	6	6	3	4	10	243	366	451	619	809	631	439	320	288	294	302	244	359	509
Wind (km/h)	ESE	E	SE	SE	SE	SE	SE	SSE	SE	SSE	SSE	SE	SE	SE	SE	SW	SSW	S	S	SSE	SSE	ESE	E	N
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	off	off	off	off	off	off	off	off	off	off	off	off	off	cross	cross- off	cross- off	cross- off	cross- off	off	off	cross- off	cross- on
High Tide / height (m)		6:39PM 3.45					7:12AM 3.27				7:22PM 3.67				7:47AM 3.51				7:58PM 3.85				8:20AM 3.71
Low Tide / height (m)	1:10PM 0.95				1:43AM 0.54				1:56PM 0.73				2:23AM 0.39				2:34PM 0.56				2:57AM 0.31

	Friday 17			Saturday 18								Sunday 19								Monday 20
Sunrise	-	-	-	-	-	-	7:48	-	-	-	-	-	-	-	7:50	-	-	-	-	-	-	-	7:52	-
Sunset	6:20	-	-	-	-	-	-	-	6:16	-	-	-	-	-	-	-	6:15	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	1	3	3	4	10	3	-	-	2	1	1	2	-	-
Temp. °C	13	14	15	14	14	13	12	13	14	13	12	12	13	13	14	15	14	14	14	13	13	13	13	13
Feels °C (?)	11	11	11	8	9	6	5	5	6	5	3	2	3	3	5	11	10	10	9	7	7	7	9	10

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Wales - Lleyn

Wind Update The wind is still cross-off at Porth Colmon (light winds from the E at Aberdaron 12 km from Porth Colmon). 0.3m 2s local chop from the SSE with a 0.1m 9s swell from the SW. 2 swells combining to make bigger set waves.
1 hour 32 minutes ago Porth Colmon

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1 h 32 min ago

15 km/h

Cross-Off

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