Porth Nefyn Surf Forecast

/ Wales – Lleyn (14 surf breaks) /

UK (471 surf breaks) / Lat Long: (52.94° N 4.53° W)

Surf Forecasts:

Porth Nefyn surfForecast / Wales – Lleyn / UK

48hr Weather and Surf, issued 12 pm Saturday 30 Aug 2025 BST

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 18.1° C
(Which is 2.3°C warmer than normal for this time of year)

How big are the waves at Porth Nefyn today?

The current surf forecast for Porth Nefyn at 6PM is: 2.2m 7s primary swell from a Southwest direction (forecast issued at 12:00pm August 30). The wind direction is predicted to be cross-offshore.

Time (BST) & Date	Wave Height	Wave Period
Morning (30 Aug)	1ft (0.3m)	4s
Afternoon (30 Aug)	0.5ft (0.2m)	8s
Evening (30 Aug)	7ft (2.2m)	8s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Saturday 30					Sunday 31								Monday 01								Tuesday 02
	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	4 PM	7 PM	10 PM	1 AM	4 AM	7 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 (?)	NW	WSW	SSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW	SW	SW
Period(s) (?)	4	8	6	7	8	8	8	8	8	8	8	9	9	8	8	7	8	8	6	6	6	7	7	7
Wave Graph (?)
Energy (?)	4	7	271	516	598	564	582	710	707	816	1023	1182	1017	746	499	351	276	289	0	0	170	172	109	75
Wind (km/h)	S	SSE	S	SSW	SW	SSW	SSW	SSW	SSW	SSW	SSW	S	S	SSW	SSW	SW	SW	SW	SW	WSW	WSW	WSW	SW	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	off	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross	cross- off	cross- off	off
High Tide / height (m)			1:26PM 2.87				1:49AM 2.78				2:12PM 2.63				2:46AM 2.51				3:31PM 2.44					4:35AM 2.36
Low Tide / height (m)	7:59AM 1.07				8:15PM 1.16				8:42AM 1.32				9:11PM 1.40				9:48AM 1.51					10:40PM 1.53

	Saturday 30					Sunday 31								Monday 01								Tuesday 02
Sunrise	-	-	-	-	-	-	-	6:24	-	-	-	-	-	-	-	6:26	-	-	-	-	-	-	-	6:28
Sunset	-	-	-	8:12	-	-	-	-	-	-	-	8:09	-	-	-	-	-	-	-	8:07	-	-	-	-

Rain (mm)	-	1	4	1	-	-	-	-	-	-	-	1	2	3	4	3	-	-	1	1	2	1	-	-
Temp. °C	16	17	18	17	16	15	15	15	15	16	16	16	15	15	15	15	15	16	16	16	15	15	15	14
Feels °C (?)	10	10	11	10	8	7	7	7	6	6	6	7	6	6	8	10	10	10	9	10	9	10	12	12

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 offshore at Porth Nefyn (strong winds from the S at Caernarfon Airport 22 km from Porth Nefyn). A 2.0m windswell from the SSW
1 hour 31 minutes ago Porth Nefyn

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22 km away, 1 h 31 min ago

44 km/h

0.0

18.1

Air / Water (°C)

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