Go stargazing site - a place identified by the Go Stargazing team as a good spot to stargaze from. This is based on local light pollution levels, distance from nearby towns and cities and having somewhere safe to park. These locations tend to be remote car parks with no facilities.
Weather forecast
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01/04/26
12° 7% -
01/04/26
12° 49% -
01/04/26
9° 6% -
02/04/26
6° 2%
Weather forecast for Denbigh (10.0 miles away) updated 01/04/26 at 06:01. Powered by Met Office data.
Local light pollution
Alwen Reservoir Car Park is estimated to have light pollution levels similar to a rural 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.
Wed 1st Apr
Thu 2nd Apr
Fri 3rd Apr
Sat 4th Apr
Sun 5th Apr
Mon 6th Apr
Tue 7th 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
Stay at one of these stargazing-friendly accommodation providers.