Plas Tan y Bwlch is the Snowdonia National Park Environmental Studies centre and administered by the National Park Authority. Its location within the boundaries of the Snowdonia Dark Sky Reserve means it benefits from wonderfully dark skies and as such is the venue for stargazing events.
Weather forecast
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04/12/23
0° 70% -
04/12/23
0° 69% -
05/12/23
0° 25% -
05/12/23
0° 74%
Weather forecast for Moelwyn Mawr (2.6 miles away) updated 04/12/23 at 20:00.
Local light pollution
Plas Tan y Bwlch 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
The below chart shows when the skies will be at their darkest at this location and therefore the best time to visit. 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. See our dark sky calendar for more details.
Mon 4th Dec
Tue 5th Dec
Wed 6th Dec
Thu 7th Dec
Fri 8th Dec
Sat 9th Dec
Sun 10th Dec
Find more 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.