Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Lat Long: 53.28° N 4.62° W

Issued: 12 am 22 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.
	Wednesday 22								Thursday 23								Friday 24
	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 6	NNW 6	NNW 6	NNW 6	NNW 6	NNW 5	NNW 5	NNW 6	N 6	N 6	N 6	N 6	N 5	N 5	N 5	N 4	N 4	N 4	N 4	S 13	S 13	S 13	S 13	S 13
Wave Graph
kJ	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3	3	3	3
Wind (km/h)	N	NNW	NNW	N	N	NNW	NNW	N	N	NNW	N	N	NNW	N	N	NNE	N	N	N	WNW	WNW	SW	SW	SW
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	off	cross-off	cross-off	cross-off	cross-on	cross-on	on	on	on
High Tide			4:45AM4.69m				5:23PM4.40m				5:49AM4.42m				6:33PM4.31m					7:10AM4.28m				7:50PM4.38m
Low Tide	10:29PM1.82m				11:11AM1.78m				11:31PM2.09m				12:17PM2.03m				00:48AM2.22m					1:29PM2.12m


	—	5:18	—	—	—	—	—	—	—	5:20	—	—	—	—	—	—	—	5:20	—	—	—	—	—	—
	—	—	—	—	—	—	9:30	—	—	—	—	—	—	—	9:28	—	—	—	—	—	—	—	9:27	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	12	11	12	13	15	17	17	15	14	13	13	14	15	17	18	17	16	15	14	14	14	16	17	17
Feels °C	9	8	8	9	11	13	14	12	11	10	10	11	12	14	16	15	14	14	13	12	12	14	14	15
Swell 1 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	N 5	N 5	N 4	—	N 4	N 4	N 4	NNW 4	NNW 4	N 3	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	25	11	6	—	6	6	3	3	1	1	—
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	S 13	S 13	S 13	S 13	S 13
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3	3	3	3	3
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	N 6	NNW 6	NNW 6	NNW 6	NNW 6	NNW 5	NNW 5	NNW 6	N 6	N 6	N 6	N 6	N 5	—	—	—	N 4	—	—	—	—	—	—	WSW 2
kJ	91	134	130	86	65	62	49	50	82	82	62	62	47	—	—	—	6	—	—	—	—	—	—	1
Nearest Offshore or Glassy	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Rhos-On-Sea Wales - North	Hartlepool North East England	Black Middens North East England	El Mongol Asturias	Drumnacraig Beach Donegal	Saltburn-by-Sea North East England	Saltburn-by-Sea North East England	Duckpool Bay Cornwall (North)	Duckpool Bay Cornwall (North)	Saltburn-by-Sea North East England	Slivebawn Right Donegal	Admirals North East England	Huntcliff North East England	Culdaff Donegal	White Rocks Antrim	White Park Bay Antrim	Portrush-East Strand Antrim	Coumeenole Kerry	Pedra do Sal Galicia	Seines Lofoten and Arctic	Playa de Luanco Asturias	Tjornuvik Bay (Streymoy) Faroe Islands
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	2	1	2
Distance (km)	59	59	59	273	284	1085	292	280	280	267	267	280	292	297	281	278	250	246	251	415	1148	1853	1078	1015
Best forecast wave conditions in Anglesy
Rating (10 max)
Best forecast wave conditions in United Kingdom	Rhos-On-Sea Wales - North	Robin Hoods Bay North East England	Berwick-Upon-Tweed North East England	Balephuil (Tiree) Scot - Inner Hebrides	Robin Hoods Bay North East England			Balephuil (Tiree) Scot - Inner Hebrides	Cayton Bay Point North East England	Polzeath Cornwall (North)	Polzeath Cornwall (North)	Polzeath Cornwall (North)	Feall Bay (Coll) Scot - Inner Hebrides	Sennen Cove Cornwall (North)	Sennen Cove Cornwall (North)	Cayton Bay Bunkers North East England	Cayton Bay Bunkers North East England	Skerrys North East England	Skerrys North East England
Rating (10 max)	1	1	1	1	2			1	1	1	1	1	1	1	1	1	1	1	1
Header Global	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Papa Tangaroa Chile	Cathedral Rock Australia	Viri Inga O Tuki Chile	Cobblestones Australia	Cobblestones Australia	Point Roadnight Australia	Daly Heads Australia	Blackfellows Australia	Point Roadnight Australia	Point Roadnight Australia	Dolphin Point South Africa	Dolphin Point South Africa	Boneyards South Africa	Boneyards South Africa	Sea Vista South Africa	Cathedral Rock Australia	Fish Boma South Africa	Fish Boma South Africa
Rating (10 max)	5	6	6	5	5	5	7	9	6	4	4	5	6	4	9	9	9	8	8	8	7	9	5	5

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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