Dinas Dinlle Surf Forecast

/ Wales – Lleyn (14 surf breaks) /

UK (471 surf breaks) / Lat Long: (53.09° N 4.34° W)

Surf Forecasts

Dinas Dinlle surfForecast / Wales – Lleyn / UK

12 Day Weather and Surf, issued 6 pm Monday 18 Aug 2025 BST

Forecast update in hr min s Forecast update imminent

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

Today's Dinas Dinlle sea temperature is 18.9° C
(Which is 3.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Dinas Dinlle this week:

The most powerful waves expected at Dinas Dinlle in the next 12 days are 0.1m 16s and forecast to arrive on Sunday (Aug 24) at 7PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 26) at 1AM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	7PM (Sun 24th Aug)	0.5ft (0.1m) 16s

Table - best surf conditions forecast for Dinas Dinlle over the next 12 days.

Hourly 12 Days

Lleyn Peninsula Surf

Print Surf Table

Updates in hr min s Forecast update imminent

	Short Range Forecast Mostly dry. Warm (max 20°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.											Days 3-6 Weather Summary Mostly dry. Very mild (max 19°C on Sun morning, min 13°C on Thu night). Wind will be generally light.
	Mon 18		Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23			Sunday 24
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
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 (?)	SW	W	SW	W	W	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	SW	SW
Period(s) (?)	12	12	7	12	12	6	6	6	6	6	13	12	12	12	10	11	18	18	16	16	16
Wave Graph (?)
Energy (?)	7	10	2	5	5	1	2	1	1	1	3	4	3	4	3	3	9	8	6	11	13
Wind (km/h)	E	ENE	E	NNE	ENE	ENE	NE	ENE	E	N	ENE	NNE	NW	ENE	S	WNW	E	S	WSW	ESE	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	off	off	cross- off	off	cross- off	cross- off	cross- off	glass	cross	cross- off	cross- off	cross- on	cross- off	glass	on	glass	cross	glass	cross- off	cross- off
High Tide / height (m)	4:59PM 2.83		5:48AM 2.82	6:22PM 2.98		7:04AM 2.94		7:27PM 3.24	8:01AM 3.12		8:18PM 3.51	8:46AM 3.30		9:01PM 3.75	9:26AM 3.43		9:41PM 3.92	10:03AM 3.52		10:18PM 4.00	10:39AM 3.55
Low Tide / height (m)		12:30AM 0.99		1:08PM 1.02	1:46AM 0.74		2:12PM 0.78	2:44AM 0.44		3:02PM 0.53	3:32AM 0.18		3:45PM 0.33		4:14AM 0.01	4:23PM 0.20		4:52AM -0.06	4:59PM 0.16		5:26AM -0.03

	Mon 18		Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23			Sunday 24
Sunrise	-	-	6:03	-	-	6:05	-	-	6:07	-	-	6:09	-	-	6:09	-	-	6:11	-	-	6:13
Sunset	8:38	-	-	8:37	-	-	8:35	-	-	8:31	-	-	8:30	-	-	8:28	-	-	8:25	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	20	18	18	20	16	16	17	14	16	17	14	17	17	14	18	18	15	19	21	18	23
Feels °C (?)	20	18	17	18	13	13	13	12	15	15	12	16	16	13	17	17	14	17	20	17	21

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 - Lleyn

Wind Update The wind is still offshore at Dinas Dinlle (light winds from the E.(Wind varies from 050 to 110 degs) at Caernarfon Airport 1 km from Dinas Dinlle). No surfable waves
1 hour 54 minutes ago Dinas Dinlle

Expand

View all

1 h 54 min ago

11 km/h

Offshore

Please reload the page to see if there are any updates.

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 Dinas Dinlle 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.

Information about the Dinas Dinlle Surf forecast

The above surf forecast table for Dinas Dinlle provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Dinas Dinlle can be found by selecting the local surf guide option on the grey menu. Our Dinas Dinlle 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 (Dinas Dinlle) 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 Dinas Dinlle 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 Lleyn Peninsula? If you are looking for accommodation near Dinas Dinlle, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Anglesey which is 22 km (14 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Porthmadog which is 24 km (15 miles) away, Bangor, Holyhead and Llandudno.