Llantwit Major Surf Forecast

/ Wales – South East (14 surf breaks) /

UK (471 surf breaks) / Lat Long: (51.39° N 3.50° W)

Surf Forecasts:

Llantwit Major surfForecast / Wales – South East / UK

48hr Weather and Surf, issued 12 am Friday 19 Sep 2025 BST

Forecast update in hr min s Forecast update imminent

Llantwit Major surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Llantwit Major sea temperature is 17.4° C
(Which is 1.7°C warmer than normal for this time of year)

How big are the waves at Llantwit Major today?

The current surf forecast for Llantwit Major at 6AM is: 1.1m 10s primary swell from a West direction (forecast issued at 12:00am September 19). The wind direction is predicted to be cross-onshore.

Time (BST) & Date	Wave Height	Wave Period
Morning (19 Sep)	3.5ft (1.1m)	10s
Afternoon (19 Sep)	3.5ft (1.0m)	10s
Evening (19 Sep)	3ft (0.9m)	10s

Table - waves today at Llantwit Major. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Friday 19								Saturday 20								Sunday 21
	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	4 PM	7 PM
Rating (10 max)	0	0	0	0	0	0	0	0	1	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 (?)	WSW	WSW	W	W	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	W	WNW	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	11	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	5	9	8	8	8	8	8
Wave Graph (?)
kJ (?)	286	250	226	226	240	205	201	157	154	123	88	86	84	84	59	104	42	30	26	24	23	22	22	21
Wind (km/h)	SSW	SSW	SSW	SSE	SSE	S	W	WNW	S	S	SSW	SSW	SSE	SW	W	WNW	W	NW	N	NNE	NE	NE	NE	NNE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross	cross- on	cross- on	cross- on	glass	cross- on	cross- on	cross- on	cross	on	cross- on	cross	cross- on	cross	cross- off	off	off	off	off	off
High Tide / height (m)				5:50AM 7.89				6:11PM 8.45				6:34AM 8.49				6:52PM 9.00					7:11AM 8.97
Low Tide / height (m)		12:01AM 2.07				12:18PM 1.95				12:43AM 1.51				12:55PM 1.42					1:16AM 1.06				1:26PM 1.01

		Friday 19								Saturday 20								Sunday 21
Sunrise	-	-	-	6:54	-	-	-	-	-	-	-	6:54	-	-	-	-	-	-	-	6:56	-	-	-	-
Sunset	-	-	-	-	-	-	-	7:20	-	-	-	-	-	-	-	7:17	-	-	-	-	-	-	-	7:15

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	2	6	4	-	-	-	-	-	-	-	-	-
Temp. °C	17	16	16	15	16	20	20	18	16	16	15	16	16	16	14	12	12	12	11	11	10	10	12	13
Feels °C (?)	15	14	15	14	15	18	18	18	17	16	14	16	16	15	8	6	8	9	9	9	4	3	7	8

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 - South East

Wind Update Continuing clean conditions at Llantwit Major (light winds from the SSE at St Athan 5 km from Llantwit Major). 0.8m 9s swell from the W with a 0.2m 2s local chop from the S. 2 swells combining to make bigger set waves.
43 minutes ago Llantwit Major

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Actual: 43 min ago

9 km/h

SSE

Clean

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