Awesome spot to view the stars and surrounding scenery, take a camera and tripod and have a go at some night-time photography! Photo used with kind permission from Paul Clark.
Weather forecast
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08/07/25
12° 0% -
08/07/25
9° 1%
Weather forecast for Drygarn Fawr (3.1 miles away) updated 08/07/25 at 04:00.
Local light pollution
Elan Valley - Claerwen 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.
Tue 8th Jul
Wed 9th Jul
Thu 10th Jul
Fri 11th Jul
Sat 12th Jul
Sun 13th Jul
Mon 14th 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
Stay at one of these stargazing-friendly accommodation providers.