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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23/04/26
17° 4% -
23/04/26
17° 0% -
23/04/26
15° 0% -
24/04/26
10° 0%
Weather forecast for Rhayader (6.9 miles away) updated 23/04/26 at 06:01. Powered by Met Office data.
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. For more advanced light pollution data, view this location on DarkSkySites.
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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.
Thu 23rd Apr
Fri 24th Apr
Sat 25th Apr
Sun 26th Apr
Mon 27th Apr
Tue 28th Apr
Wed 29th Apr
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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