Remote location free from light pollution, visit on a night with no moon for the best starry skies!
Weather forecast
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09/07/25
21° 0% -
09/07/25
14° 0% -
10/07/25
11° 13% -
10/07/25
10° 2%
Weather forecast for Rhayader (4.8 miles away) updated 09/07/25 at 04:02.
Local light pollution
Elan Valley - Craig Goch Dam is estimated to have light pollution levels similar to a 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.
Wed 9th Jul
Thu 10th Jul
Fri 11th Jul
Sat 12th Jul
Sun 13th Jul
Mon 14th Jul
Tue 15th Jul
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
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