Welsh Dark Skies Festival 2025
Saturday 20th September 2025 from 10:00am to 22:00pm
Brecon - Libanus Mountain Centre
Libanus, Brecon, Powys, LD3 8ER, Wales
Join the team from the Bannau Brycheiniog National Park (Brecon Beacons National Park) for this annual celebration of the night sky in the heart of Bannau Brycheiniog (Brecon Beacons) Dark Sky Reserve.
On Saturday 20th September 2025, the Visitor Centre will come alive with a full day and evening of inspiring talks, hands-on activities, stargazing sessions, and immersive planetarium experiences – all set against one of the best backdrops for dark sky discovery in the UK.
Whether you’re a seasoned astronomer or simply love the beauty of a starry sky, our Dark Sky Festival offers something for everyone.
Event organiser
Brecon Beacons National Park is organising this event
Please contact Brecon Beacons National Park directly for more details regarding this event or, if appropriate, contact the event venue.
Email: [email protected]
Website: Brecon Beacons National Park
Event booking
Event darkness
The below chart shows if and when the skies will be at their darkest during this event. Moonlight is shown in light yellow and the Sun's twilight in light blue. Midnight on the date shown is shown as a white line with sunset to the left and sunrise the next morning to the right. A black background with stars shows the best times for stargazing.
Sat 20th Sep
Local light pollution
Brecon - Libanus Mountain Centre is estimated to have light pollution levels similar to a rural location based on the latest data from the VIIRS satellite.
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Urban
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Suburban
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Semi-rural
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Rural
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Dark site
The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.
Forthcoming events
Below is a list of events at Brecon - Libanus Mountain Centre. View these events on our calendar, add them to your calendar or Google Calendar.
Stay and gaze nearby
Stay at one of these stargazing-friendly accommodation providers.