Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Lat Long: 53.28° N 4.62° W

Issued: 12 am 21 Jul 2026 (local time)

Forecast update in hr min

Today's Trearddur Bay (Holy Island) sea temperature is

16.5° C

Trearddur Bay (Holy Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

	Short Range Forecast Mostly dry. Very mild (max 18°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.
	Tuesday 21								Wednesday 22								Thursday 23
	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	10 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 Period (s)	N 5	N 5	N 5	N 5	N 5	N 5	N 6	N 6	N 7	NNW 7	NNW 6	NNW 6	NNW 6	NNW 6	NNW 5	NNW 5	NNW 6	N 6	N 6	N 5	N 5	N 5	NNW 4	NNW 4
Wave Graph
kJ	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Wind (km/h)	N	N	N	NNW	N	NNW	N	NNE	N	NNW	NNW	NNW	N	NNW	NNW	N	N	N	N	N	NNW	NNW	N	NNE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	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-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	off
High Tide		3:53AM5.01m					4:26PM4.58m				4:45AM4.69m				5:23PM4.40m				5:49AM4.42m				6:33PM4.31m
Low Tide					10:16AM1.45m				10:29PM1.82m				11:11AM1.78m				11:31PM2.09m				12:17PM2.03m


	—	5:16	—	—	—	—	—	—	—	5:18	—	—	—	—	—	—	—	5:20	—	—	—	—	—	—
	—	—	—	—	—	—	9:30	—	—	—	—	—	—	—	9:30	—	—	—	—	—	—	—	9:28	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	13	13	12	13	13	14	14	13	12	11	12	13	15	17	17	16	15	13	13	14	15	17	18	18
Feels °C	10	11	9	10	9	11	11	11	9	7	8	9	11	12	13	13	12	11	10	11	12	15	16	17
Swell 1 Height (m) Direction Period (s)	—	—	—	—	—	—	N 6	—	—	—	—	—	—	—	—	—	—	—	—	—	—	N 5	NNW 4	NNW 4
kJ	—	—	—	—	—	—	39	—	—	—	—	—	—	—	—	—	—	—	—	—	—	17	7	4
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	N 5	N 5	N 5	N 5	N 5	N 5	—	N 6	N 7	NNW 7	NNW 6	NNW 6	NNW 6	NNW 6	NNW 5	NNW 5	NNW 6	N 6	N 6	N 5	N 5	—	—	NNW 3
kJ	34	27	25	23	15	23	—	92	176	180	160	135	89	53	37	36	50	64	49	47	25	—	—	1
Nearest Offshore or Glassy	Hartley Reef North East England	Duckpool Bay Cornwall (North)	Constantine Bay Cornwall (North)	Boobys Cornwall (North)	Los Locos Cantabria	Playa Bahinas Asturias	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Hartlepool North East England	Black Middens North East England	Drumnacraig Beach Donegal	Drumnacraig Beach Donegal	Saltburn-by-Sea North East England	Saltburn-by-Sea North East England	Duckpool Bay Cornwall (North)	Rhos-On-Sea Wales - North	Saltburn-by-Sea North East England	Penhale Cornwall (North)	Admirals North East England	Huntcliff North East England	Saltburn-by-Sea North East England
Rating (10 max)	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	286	267	306	306	1095	1083	59	59	59	59	59	273	284	292	292	280	280	267	59	280	323	297	281	280
Best forecast wave conditions in Anglesy
Rating (10 max)
Best forecast wave conditions in United Kingdom	Polzeath Cornwall (North)	Scarborough North Bay North East England	Penhale Cornwall (North)	Boobys Cornwall (North)			Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Beadnell Bay North East England	Berwick-Upon-Tweed North East England	Balephuil (Tiree) Scot - Inner Hebrides	Black Middens North East England		Bridlington North East England	Cayton Bay Point North East England	Cayton Bay Point North East England	Polzeath Cornwall (North)	Polzeath Cornwall (North)	Godrevy Cornwall (North)	Sennen Cove Cornwall (North)	Sennen Cove Cornwall (North)	Sennen Cove Cornwall (North)	Cayton Bay Bunkers North East England
Rating (10 max)	1	1	1	1			1	1	1	1	1	1	1		1	1	1	1	1	1	1	1	1	1
Header Global	Purakaunui Bay New Zealand	Purakaunui Bay New Zealand	Asu Indonesia	Asu Indonesia	Aganoa Beach Samoa	Chameau Mauritius	Sea Vista South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Gas Bay Australia	Injidup Carpark Australia	Gas Bay Australia	Viri Inga O Tuki Chile	Cathedral Rock Australia	Viri Inga O Tuki Chile	Point Roadnight Australia	Boulders Samoa	Cobblestones Australia	Brak River South Africa	Benkunqut Indonesia	Barbel Point South Africa	Dolphin Point South Africa	Dolphin Point South Africa
Rating (10 max)	5	5	4	4	4	4	5	5	5	6	6	5	5	8	9	6	6	4	4	4	4	4	5	9

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

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