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Dark Skies in Southern Eryri

Southern Eryri (Southern Snowdonia) is part of Eryri National Park, which was named an International Dark Sky Reserve in 2015 for the quality of its night skies. Around Cadair Idris, the Mawddach estuary, Bala and the Dysynni valley, there are very few towns and little light pollution, so on a clear, moonless night you can see the Milky Way, the major constellations and shooting stars with the naked eye. This guide covers the best places to stargaze in Southern Eryri, when to go and where to stay. Dark sky places to stay are listed below.

What is a Dark Sky Reserve?

An International Dark Sky Reserve is an area recognised by DarkSky International for its exceptionally dark night skies and for the work done to protect them. Eryri has a dark core where lighting is kept to a minimum, surrounded by communities that work to reduce light pollution. Bannau Brycheiniog (Brecon Beacons) is also a Dark Sky Reserve, and the Elan Valley is a Dark Sky Park, so Mid Wales has some of the darkest skies in Britain.

Where are the best places to stargaze in Southern Eryri?

Bwlch y Groes. One of the highest tarmac passes in Wales, on the minor road between Dinas Mawddwy and Llanuwchllyn near Bala. There's a small parking area near the top with wide views of the sky in every direction.
Llynnau Cregennan, the Cregennan Lakes. Two lakes on the foothills of Cadair Idris above Arthog, with a car park by the larger lake. The mountains block the glow from the coast, and the reflection of the stars on a still night is worth the drive.
Tal-y-llyn and the Dysynni valley. Llyn Mwyngil, the lake at Tal-y-llyn, sits under the southern cliffs of Cadair Idris, a long way from any town.
The Mawddach estuary. The flat estuary between Dolgellau and Barmouth gives big, open skies, especially from the Mawddach Trail near Penmaenpool and Arthog.
Llyn Tegid, Bala. The largest natural lake in Wales has dark shores away from the town, with open views to the south.
The Harlech and Ardudwy coast. Looking west over Cardigan Bay, the sky over the sea is very dark, and the beaches at Harlech and Llandanwg are good places to watch the stars set.

When is the best time for stargazing?

The darkest nights are from October to March, when it gets dark early and the Milky Way is visible in the evening in autumn. Pick a clear night close to the new moon, and give your eyes 20 minutes to adjust. The Perseid meteor shower peaks in mid August and the Geminids in mid December. During strong solar storms, the Northern Lights can occasionally be seen from Mid Wales, low on the northern horizon.

Tips for stargazing

Check the forecast for clear skies and go out after the moon has set.
Take a red torch, warm layers, a hat and something to sit on. It's cold at night in the hills, even in summer.
Stay on roads and paths you know, and don't walk onto open mountain in the dark without experience and a map.
Binoculars show far more than the naked eye; a stargazing app helps you find your way round the sky.

Where to stay for dark skies

Stay somewhere you can step outside and look up. Graig Wen near Arthog, on the Mawddach Trail, is close to the Cregennan Lakes, and Gwesty Pen-y-Bont is a 16th-century inn on the shore of Tal-y-llyn. Dolgellau, Bala, Tywyn and Harlech all have cottages, farm stays and glamping sites away from street lights. See more dark skies accommodation across Mid Wales.

More stargazing in Mid Wales

See our guide to dark skies and stargazing in Mid Wales, including the Elan Valley Dark Sky Park and the Cambrian Mountains. For a ready-made plan, our itineraries include a Dark Skies Weekend and a Southern Eryri weekend.

Dark sky places to stay

Inspiration

Dark Sky Destination - Brecon Beacons
Dark Sky Destination - Elan Valley
Dark Skies Accommodation in Mid Wales
Dark Skies and Stargazing in Mid Wales

Some of the darkest skies in Britain, with the Milky Way overhead on a clear night. Here is where to go, what to look for and when.

Number of results: 76

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Gwerniago Camping Site

Address

Pennal, Machynlleth, Powys, SY20 9JX

Telephone
01654 791227

contact@gwerniago.co.uk

Machynlleth

Dates

From:

24 Mar 2027to1 Oct 2027

Gwerniago Campsite is located in Mid Wales between Machynlleth and Aberdyfi. Electric, Non-Electric, Grass & Hardstanding pitches available. Campfires allowed, Parking on pitch. Ideal base for Beaches, Mountains, Dyfi Bike Park, Mach Loop.

Price
Price £22.00 to £30.00 per touring pitch per night normally for one car and 2 people
Bryn Melyn Apartments

Address

Bryn Melyn, Panorama Road, Barmouth, Gwynedd, LL42 1DQ

Telephone
01341 280556

info@brynmelyn.co.uk

Barmouth

Dates

From:

1 Jan 2026to31 Dec 2026

The location of Bryn Melyn is truly breathtaking, as it sits atop a hillside overlooking Barmouth on the Southern Snowdonia coast, with views of the Mawddach Estuary, Cadair Idris, and the sea. Despite its peaceful setting, it is only a short…

Price
Price £300.00 to £750.00 per unit per week
Llety Brynawel Guest House

Address

Brynawel, Tower Road, Pennal, Machynlleth, SY20 9DP

Telephone
01654 791206

info@lletybrynawel.co.uk

Pennal

Dates

From:

1 Jan 2026to31 Dec 2026

Llety Brynawel Guest House is a magnificent Georgian period guest house of immense charm and character situated in the beautiful village of Pennal amidst the famous Snowdonia National Park.

Price
Price £115.00 to £125.00 per room per night for bed & breakfast
Portmeirion Motorhome Park

Address

Portmeirion, Minffordd, Penrhyndeudraeth, Gwynedd, LL48 6ER

Telephone
01766 770000

stay@portmeirion.wales

Penrhyndeudraeth

Dates

From:

1 Jan 2026to31 Dec 2026

Portmeirion Motorhome Park is a new site within Portmerion village opening Monday 1st of August 2022 until 31st of October 2022.
Glan-y-Don Holiday Park

Address

Neptune Road, Tywyn, Gwynedd, LL36 0DL

Telephone
01654 710461

info@glanydonpark.co.uk

Tywyn

Glan Y Don Holiday Park in southern Snowdonia is a five star family Holiday Home Park of superb quality in an outstanding coastal location with uninterrupted sea views.
Llandanwg Holiday Home Park

Address

Llandanwg, Harlech, Gwynedd, LL46 2SB

Telephone
01341 241602

info@llandanwgpark.co.uk

Harlech

Dates

From:

1 Jan 2026to31 Dec 2026

Sitting on a hillside in the pretty village of Llandanwg, this five star (exceptional) rated caravan park boasts superb views of Tremadog Bay, Harlech Beach, Shell Island and the Llyn Peninsular.
Ynysymaengwyn Caravan Park

Address

Ynysymaengwyn Caravan Park, Tywyn, Gwynedd, LL36 9RY

Telephone
01654 710684

info@ynysy.co.uk

Tywyn

Dates

From:

1 Jan 2026to31 Dec 2026

Local authority owned site situated in the grounds of an old manor house and woodlands, offers excellent facilities. Ideal base for walkers, cyclists, climbers, fishing and water sports. Open April - October.

Price
Price £15.00 to £30.00 per touring pitch per night normally for one car and 2 people
Morben Isaf Holiday Home & Touring Park

Address

Derwenlas, Machynlleth, Powys, SY20 8SR

Telephone
01654 781473

info@morbenisaf.co.uk

Machynlleth

Dates

From:

1 Jan 2026to31 Dec 2026

This Holiday Home and Touring Park is ideally located near the historic and picturesque town of Machynlleth.

Price
Price £15.00 to £26.00 per touring pitch per night normally for one car and 2 people
Tan-y-Fron Holiday Park | Holiday Homes

Address

Arran Road, Dolgellau, Gwynedd, LL40 2AA

Telephone
01341 422638

info@tan-y-fron.co.uk

Dolgellau

Dates

From:

1 Jan 2026to31 Dec 2026

Tan-y-Fron Holiday Park is situated within the beautiful Snowdonia National Park and the nearest to the market town of Dolgellau which is only a few minutes walk (1/2 mile) away.
Dyfi Hideaway

Address

Dyfi Hideaway, Penestaer, Glandyfi, Machynlleth, Powys, SY20 8SS

Telephone
07775947674

adam.nags@outlook.com

Glandyfi, Machynlleth

A luxury holiday cottage in the Dyfi Valley near Snowdonia, sleeping up to 6 guests. Pet and family friendly.
Situated on the main Aberystwyth road, with stunning views over the River Dovey (UNESCO Biosphere Reserve). Breathtaking views across the…
Gwynedd Holiday Park

Address

Neptune Road, Tywyn, Gwynedd, LL36 0DL

Telephone
01654 710461

scl@salopcaravans.co.uk

Tywyn

Dates

From:

1 Jan 2026to31 Dec 2026

This immaculately kept park is small and unashamedly select, with manicured lawns and landscaped gardens.
Caravan @ Tyddyn Rhys Farm

Address

Tyddyn Rhys, Aberdovey, Gwynedd, LL35 0PG

Telephone
01654 767769

tyddynrhys@googlemail.com

Aberdovey

Dates

From:

1 Jan 2026to31 Dec 2026

Tyddyn Rhys commands a privileged position half a mile above the village of Aberdovey with a panoramic view overlooking the Dovey Estuary and Cardigan Bay.

Price
Price £400.00 to £405.00 per unit per week
Llanllwyda Caravan Site

Address

Llanfihangel Y Pennant, Tywyn, Gwynedd, LL36 9TN

Telephone
01654 782276

rhianmaiwilliams@hotmail.com

Tywyn

Dates

From:

1 Jan 2026to31 Dec 2026

A lovely laid back secluded site on a working farm. Its perfect to get away from it all and relax. Locality - Southern Snowdonia.

Price
Price £14.00 to £20.00 per touring pitch per night normally for one car and 2 people
Hideaway in the Hills | Camping & Pod

Address

Hideaway in the Hills, Dinas, Llanbedr, Gwynedd, LL45 2PH

Telephone
01341 241585

hideawayinthehills@outlook.com

Llanbedr

Dates

From:

31 Mar 2026to30 Nov 2026

Dinas is a small, quiet, family friendly campsite, children welcome, ideal for walkers and those who wish to enjoy the countryside. We also have a Camping Pod which sleeps 2, offering all the fun of camping, without the effort of putting up a tent!

Price
Price £50.00 per unit per night
Glandyfi Castle | Stay

Address

Glandyfi Castle, Glandyfi, Machynlleth, Powys, SY20 8SS

enquiries@glandyficastle.co.uk

Machynlleth

Exclusive-use castle near Machynlleth in Mid Wales, with 11 bedrooms sleeping 22 guests in individually styled bedrooms. Ideal for birthdays, anniversaries and relaxed get togethers with family or friends. Dog friendly venue with 40 acres of…
Centre for Alternative Technology | Stay

Address

Pantperthog, Machynlleth, Powys, SY20 9AZ

Telephone
01654 705950

Machynlleth

Dates

From:

1 Jan 2026to31 Dec 2026

CAT’s on-site accommodation is housed within the WISE building, a beautifully designed and award winning eco facility right in the middle of the Visitor Centre. Visitors can dine in CAT's vegetarian café and enjoy free access to the Visitor Centre.

Price
Price £40.00 per person per night to £80.00 per room per night for bed & breakfast
Gwesty Pen-y-Bont Hotel

Address

Pen-y-Bont Hotel, Talyllyn, Tywyn, Gwynedd, LL36 9AJ

Telephone
01654 782285

info@penybonthotel.co.uk

Tywyn

Dates

A 16th Century Coaching Inn with a spectacular location on Llyn Mwyngil (Talyllyn Lake) near Cadair Idris in the heart of southern Eryri (Snowdonia). Enjoy Bed & Breakfast in one of our five letting rooms, with a hearty Welsh Breakfast by the log…

Price
Price £180.00 per room per night for bed & breakfast
Penrhyn Dyfi

Address

Plas Penrhyn, Nr Machynlleth, Gwynedd, SY20 9JR

Telephone
01654 702029

glanfechan@hotmail.com

Nr Machynlleth

Dates

From:

1 Jan 2026to31 Dec 2026

Sleeps 12 - Spacious, elegant Grade II listed Georgian country house with panoramic views overlooking the Dyfi Estuary on the outskirts of Machynlleth, Ideal base to explore the wonders of mid and north Wales and beyond. Aberdovey 10 miles. Perfect…

Price
Price £2,500.00 to £3,000.00 per unit per week
Islawrffordd Holiday Home Park

Address

Talybont, Barmouth, Gwynedd, LL43 2BQ

Telephone
01341 247269

info@islawrffordd.co.uk

Barmouth

Dates

From:

1 Jan 2026to31 Dec 2026

Family owned & run since being established in 1957, Islawrffordd Holiday Park is a 5 star Holiday Park which offers the very best in quality.
Cynfal Farm Cottages

Address

Cynfal Farm Cottages, Bryncrug, Tywyn, Gwynedd, LL36 9RB

Telephone
07971 065 953

cynfalfrm@gmail.com

Bryncrug, Tywyn

Dates

From:

1 Jan 2026to31 Dec 2026

Cynfal Farm in Southern Snowdonia is the perfect holiday location for couples or families seeking something rather special. Two well apointed self catering holiday homes. Own holt at Cynfal for the Tal y llyn Steam Railway.

Price
Price £450.00 to £910.00 per unit per week
Hendy Farm Holidays

Address

Hendy Farm, Tywyn, Gwynedd, LL36 9RU

Telephone
01654 710457

jones@farmline.com

Tywyn

Dates

From:

1 Jan 2026to31 Dec 2026

A warm welcome awaits you at Hendy, situated in the Snowdonia National Park. Enjoy Bed and Breakfast on a working farm with the privilege of its own halt on the Talyllyn Narrow Gauge Railway!

Price
Price £35.00 to £40.00 per person per night