Tywyn Surf Forecast

/ Wales – Mid (13 surf breaks) /

UK (471 surf breaks) / Lat Long: (52.59° N 4.11° W)

Surf Forecasts:

Tywyn surfForecast / Wales – Mid / UK

12 Day Weather and Surf, issued 12 pm Monday 15 Sep 2025 BST

Forecast update in hr min s Forecast update imminent

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

Today's Tywyn sea temperature is 17.0° C
(Which is 1.5°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Tywyn this week:

The surf forecast for Tywyn over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 4PM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Tywyn in the next 12 days are 3.0m 10s and forecast to arrive on Sunday (Sep 21) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Sep 20) at 1PM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	4PM (Fri 19th Sep)	2.5ft (0.8m) 9s
Best Surf	4PM (Fri 19th Sep)	2.5ft (0.8m) 9s
Most Powerful	1AM (Sun 21st Sep)	10ft (3.0m) 10s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Heavy rain (total 38mm), heaviest during Wed morning. Very mild (max 17°C on Wed morning, min 13°C on Mon night). Winds decreasing (near gales from the WSW on Mon morning, light winds from the S by Tue night).									Days 3-6 Weather Summary Heavy rain (total 39mm), heaviest during Sat morning. Very mild (max 18°C on Thu afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the SSW on Thu morning, calm by Fri afternoon).
	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	3	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	W	W	W	W	WSW	SW	WSW	WSW	SW	SW	WSW	SW	WSW	WSW	SW	SW	WSW	W	WNW	W
Period(s) (?)	11	9	7	6	6	5	8	9	10	6	8	8	9	9	9	6	6	10	7	6	5
Wave Graph (?)
Energy (?)	2383	1173	603	196	85	36	392	386	269	163	236	213	178	92	44	27	95	1761	345	164	16
Wind (km/h)	WSW	W	W	W	WSW	S	SW	SW	SSW	S	SSW	SSW	SW	NNE	S	S	SW	SSE	SW	W	NNW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	on	on	on	on	cross	cross- on	cross- on	cross	cross	cross- on	cross	cross- on	glass	cross	cross	cross- on	cross- off	cross- on	on	cross- on
High Tide / height (m)		2:41PM 3.21	3:33AM 2.97		4:16PM 3.10		5:13AM 2.97	5:44PM 3.30		6:25AM 3.20	6:45PM 3.64		7:15AM 3.49		7:32PM 3.97	7:56AM 3.76		8:11PM 4.23	8:33AM 3.99		8:48PM 4.41
Low Tide / height (m)			10:32PM 1.28	11:16AM 1.46		12:07AM 1.14	12:39PM 1.25		1:19AM 0.84		1:39PM 0.95	2:11AM 0.54		2:25PM 0.67	2:53AM 0.31		3:03PM 0.48	3:29AM 0.19		3:36PM 0.36	4:00AM 0.16

	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
Sunrise	6:48	-	-	6:50	-	-	6:52	-	-	6:54	-	-	6:56	-	-	6:56	-	-	6:58	-	-
Sunset	-	7:32	-	-	7:30	-	-	7:28	-	-	7:24	-	-	7:22	-	-	7:21	-	-	7:17	-

Rain (mm)	3	2	1	-	2	16	11	-	3	-	-	2	5	8	8	11	1	4	2	4	-
Temp. °C	15	15	14	14	15	15	17	17	17	17	18	17	17	15	17	16	15	13	12	13	11
Feels °C (?)	5	5	5	9	10	9	12	13	14	12	14	14	15	16	15	14	9	9	7	8	6

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 - Mid

Wind Update Wind reports 29 km away suggest it is still onshore at Tywyn (moderate winds from the WSW at Trawscoed). A 2.9m swell from the WSW is too big for here
1 hour 36 minutes ago Tywyn

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29 km away, 1 h 36 min ago

26 km/h

WSW

0.0

17.0

Air / Water (°C)

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tywyn 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 Tywyn Surf forecast

The above surf forecast table for Tywyn provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Tywyn can be found by selecting the local surf guide option on the grey menu. Our Tywyn 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 (Tywyn) 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 Tywyn 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 Mid Wales? If you are looking for accommodation near Tywyn, camping, hotels and holiday cottages in Mid Wales, consider staying in Aberystwyth which is 19 km (12 miles) away. Other places in and around Mid Wales where you can find information about places to rent, and car hire include Trawscoed which is 28 km (17 miles) away, Porthmadog, Aberporth and Welshpool.