Silver Bay (Holy Island) Surf Forecast

/ Wales – Anglesy (10 surf breaks) /

UK (471 surf breaks) / Lat Long: (53.26° N 4.62° W)

Surf Forecasts:

Silver Bay (Holy Island) surfForecast / Wales – Anglesy / UK

12 Day Weather and Surf, issued 12 am Sunday 07 Sep 2025 BST

Forecast update in hr min s Forecast update imminent

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

Today's Silver Bay (Holy Island) sea temperature is 16.6° C
(Which is 1.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Silver Bay (Holy Island) this week:

The surf forecast for Silver Bay (Holy Island) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 13) at 7PM. The primary swell is predicted to be 3.5m and 8s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Silver Bay (Holy Island) in the next 12 days are 3.5m 8s and forecast to arrive on Saturday (Sep 13) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 5s period and expected on Sunday (Sep 07) at 4AM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	7PM (Sat 13th Sep)	11ft (3.5m) 8s
Best Surf	7PM (Sat 13th Sep)	11ft (3.5m) 8s
Most Powerful	7PM (Sat 13th Sep)	11ft (3.5m) 8s

Table - best surf conditions forecast for Silver Bay (Holy Island) over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Light rain (total 8mm), mostly falling on Sun afternoon. Warm (max 20°C on Sat night, min 13°C on Sun night). Winds decreasing (strong winds from the S on Sun morning, light winds from the WSW by Sun night).										Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Wed morning. Very mild (max 16°C on Tue night, min 13°C on Wed night). Winds increasing (light winds from the WSW on Wed night, strong winds from the WSW by Thu morning).
		Sunday 07			Monday 08			Tuesday 09			Wednesday 10			Thursday 11			Friday 12			Sat 13
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	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
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	SSW	SSW	SW	SW	SSW	SW	SSW	SSW	SSW	SSW	SSW	SW	SW	SW	SW	SW	SW	SW	SW	SSW
Period(s) (?)	7	8	8	9	9	6	6	5	6	6	7	6	6	6	6	7	6	7	6	5	6
Wave Graph (?)
Energy (?)	196	677	500	288	189	145	137	84	142	155	383	230	173	231	255	381	129	124	127	63	374
Wind (km/h)	SSE	SSE	SSW	W	SW	SSW	SSW	SSE	SSE	SSE	SW	SSW	WSW	WSW	W	WSW	WSW	SW	SW	WSW	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	on	cross- on	cross- on	cross	cross- on	cross- on	on	cross- on	cross- on	on	cross- on	on	on	on	on	on	cross- on
High Tide / height (m)	10:30PM 5.54	10:56AM 5.36		11:05PM 5.80	11:30AM 5.56		11:42PM 5.99	12:06PM 5.67		12:20AM 6.07	12:44PM 5.69		1:00AM 6.03		1:24PM 5.61	1:43AM 5.85		2:07PM 5.42	2:31AM 5.54		2:55PM 5.15
Low Tide / height (m)		4:40AM 0.84	4:53PM 0.95		5:16AM 0.55	5:30PM 0.71		5:53AM 0.37	6:07PM 0.57		6:32AM 0.34	6:47PM 0.57		7:12AM 0.46		7:30PM 0.70	7:56AM 0.75		8:16PM 0.97	8:44AM 1.16

		Sunday 07			Monday 08			Tuesday 09			Wednesday 10			Thursday 11			Friday 12			Sat 13
Sunrise	-	6:37	-	-	6:39	-	-	6:39	-	-	6:41	-	-	6:43	-	-	6:45	-	-	6:47	-
Sunset	-	-	7:53	-	-	7:52	-	-	7:50	-	-	7:46	-	-	7:45	-	-	7:42	-	-	7:39

Rain (mm)	-	1	2	3	-	1	1	-	-	3	3	2	4	-	1	3	2	-	6	2	-
Temp. °C	20	19	16	16	14	15	15	16	16	16	14	15	15	13	14	14	14	15	15	15	16
Feels °C (?)	14	14	10	11	10	10	11	9	9	9	9	12	12	5	5	6	7	8	8	11	13

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 - Anglesy

Wind Update Still cross-shore at Silver Bay (Holy Island) (moderate winds from the SE at Mona 16 km from Silver Bay (Holy Island)). A 1.5m swell from the S
2 hours 7 minutes ago Silver Bay (Holy Island)

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16 km away, 2 h 7 min ago

28 km/h

0.0

16.6

Air / Water (°C)

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Information about the Silver Bay (Holy Island) Surf forecast

The above surf forecast table for Silver Bay (Holy Island) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Silver Bay (Holy Island) can be found by selecting the local surf guide option on the grey menu. Our Silver Bay (Holy Island) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Silver Bay (Holy Island)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Silver Bay (Holy Island) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Anglesy? If you are looking for accommodation near Silver Bay (Holy Island), camping, hotels and holiday cottages in Anglesy, consider staying in Anglesey which is 6 km (4 miles) away. Other places in and around Anglesy where you can find information about places to rent, and car hire include Holyhead which is 6 km (4 miles) away, Bangor, Porthmadog and Llandudno.