Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Lat Long: 53.28° N 4.62° W

Issued: 12 am 20 Jul 2026 (local time)

Forecast update in hr min

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

16.7° 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 Wed afternoon, min 11°C on Tue night). Wind will be generally light.
	Monday 20								Tuesday 21								Wednesday 22
	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 3	N 4	N 5	N 5	NNW 5	NNW 5	NNW 5	N 5	N 6	N 6	NNW 6	NNW 5	NNW 5	N 5	N 6	N 6	N 7	N 7	NNW 6	NNW 6	NNW 6	NNW 5	NNW 6	N 6
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	NNW	NNW	NNW	N	N	N	N	NNW	NNW	NNW	N	N	N	NNW	NNW	NNW	N	NNW	NNW	N
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	cross-off
High Tide		3:07AM5.33m				3:38PM4.82m				3:53AM5.01m					4:26PM4.58m				4:45AM4.69m				5:23PM4.40m
Low Tide				9:27AM1.09m				9:37PM1.52m					10:16AM1.45m				10:29PM1.82m				11:11AM1.78m


	—	5:15	—	—	—	—	—	—	—	5:16	—	—	—	—	—	—	—	5:18	—	—	—	—	—	—
	—	—	—	—	—	—	9:32	—	—	—	—	—	—	—	9:30	—	—	—	—	—	—	—	9:30	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	15	14	13	14	14	15	15	15	14	13	13	13	14	15	14	13	12	11	11	13	15	18	17	17
Feels °C	12	11	11	11	11	11	12	11	11	10	11	10	11	13	11	11	9	7	6	9	11	15	14	14
Swell 1 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	N 3	N 4	N 5	N 5	NNW 5	NNW 5	NNW 5	N 5	N 6	N 6	NNW 6	NNW 5	NNW 5	N 5	N 6	N 6	N 7	N 7	NNW 6	NNW 6	NNW 6	NNW 5	NNW 6	N 6
kJ	3	13	25	25	27	27	35	47	80	66	40	26	23	23	52	109	148	171	165	150	86	51	50	80
Nearest Offshore or Glassy	Hartlepool North East England	Hartlepool North East England	Hartlepool North East England	Black Middens North East England	Black Middens North East England	Lahinch Strand Clare	Fanore Clare	Marsden Bay North East England	Tynemouth Longsands North East England	Duckpool Bay Cornwall (North)	Duckpool Bay Cornwall (North)	Duckpool Bay Cornwall (North)	Los Locos Cantabria	Praa Sands Cornwall (South)	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	Playa de San Juan Asturias	Saltburn-by-Sea North East England
Rating (10 max)	2	2	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	2	1
Distance (km)	273	273	273	284	284	318	311	284	285	267	267	267	1095	358	59	59	59	59	59	273	284	292	1081	280
Best forecast wave conditions in Anglesy
Rating (10 max)
Best forecast wave conditions in United Kingdom	Chapel Point Scot - East Coast	Berwick-Upon-Tweed North East England	Cayton Bay Point North East England	Sennen Cove Cornwall (North)	Sennen Cove Cornwall (North)			Bamburgh North East England	Cayton Bay Point North East England	Polzeath Cornwall (North)	Polzeath Cornwall (North)	Penhale Cornwall (North)		Praa Sands Cornwall (South)	Rhos-On-Sea Wales - North	Staithes North East England	Bamburgh North East England	Berwick-Upon-Tweed North East England	Berwick-Upon-Tweed North East England	Berwick-Upon-Tweed North East England	Sango Bay Scot - North Coast			The Cove North East England
Rating (10 max)	2	2	2	1	1			1	1	1	1	1		1	1	1	1	1	1	1	2			1
Header Global	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand	Purakaunui Bay New Zealand	Purakaunui Bay New Zealand	Aganoa Beach Samoa	Aganoa Beach Samoa	Jongensfontein South Africa	Bruces Beauties South Africa	Sea Vista South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cow Bombie Australia	Hanga Poukura Chile	Hanga Poukura Chile	Cathedral Rock Australia
Rating (10 max)	5	5	7	6	5	5	5	5	5	5	4	4	5	5	5	5	6	5	6	6	5	6	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)

Latest Updates

Ben Mondy

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trearddur Bay (Holy Island) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Short Range Forecast

Latest Updates

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

FREE! Surf-Forecast.com widget for your website