This is a very popular lake in the Gwydir Forest above Betws y Coed. Location given special mention as a great stargazing location on Snowdonia National Park website.
Weather forecast
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27/04/24
8° 10% -
27/04/24
7° 7% -
28/04/24
5° 5% -
28/04/24
5° 8%
Weather forecast for Gwydyr Cycle Trail (2.0 miles away) updated 27/04/24 at 04:00.
Local light pollution
Llyn Geirionydd is estimated to have light pollution levels similar to adark site dark site 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.
Best time to visit
Find the best dates
If you are planning to visit this location check our dark sky calendar to find out when is best!
CalendarEvents nearby
Stay and gaze nearby
Stay at one of these stargazing-friendly accommodation providers.