The Llŷn Peninsula has some of the darkest skies in Wales — far from city light, jutting out into the Irish Sea. On a clear night you can see the Milky Way, meteor showers, and thousands of stars invisible from town.
Best dark-sky spots
- Mynydd Mawr, Uwchmynydd — the very tip of the peninsula
- Porth Oer (Whistling Sands)
- Mynydd Rhiw
- Nant Gwrtheyrn
- Porth Neigwl (Hell’s Mouth)
Tips for a good night
Check the homepage weather panel first — clear skies and a new moon are ideal. Bring a red torch to protect your night vision, give your eyes 20 minutes to adjust, and wrap up warm even in summer. Meteor showers like the Perseids (August) and Geminids (December) are spectacular here.
Dark Skies over the Llŷn
One of the darkest corners of Wales. No motorways, no cities — just you, the sea horizon, and the Milky Way.
Tonight’s Moon
Less moonlight means more stars. Here’s tonight’s phase, calculated live.
Best Viewpoints
Hand-picked spots for the darkest skies and clearest horizons on the peninsula.
When to Go
Clear, moonless nights are best. The Llŷn’s darkest, longest nights run through winter — but the Milky Way core is at its finest in summer.
Green = long dark nights & clearest skies · Gold = good · Grey = short nights, but summer brings the Milky Way core low in the south.
Stargazing Tips
Make the most of the dark.
Protect your night vision
Use a red-light torch — white light ruins dark adaptation for 20+ minutes. Give your eyes 15 minutes to adjust.
Night photography
Manual mode, ISO 3200–6400, f/2.8 or wider, 15–25 second exposure. Tripod and a 2-second timer. Shoot RAW.
Dress warm
Standing still at night gets cold fast, even in summer. Layers, hat, gloves, and a flask of something hot.
Use a star app
Stellarium (free) or Sky Guide names constellations, planets and satellites as you point your phone up.
Time it right
Best around new moon, on clear nights, from ~90 minutes after sunset once true darkness falls.
Stay safe
Tell someone where you’re going, keep your phone charged, and stick to paths you know in the dark.