Ideal location to observe the night sky with a playing field size area affording excellent views to all horizons. Featured as a dark sky discovery site although how ideal a site is questionable due to the proximity of nearby light polluted towns (we haven’t been there — let us know!).
Weather forecast
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03/04/26
13° 10% -
03/04/26
12° 6% -
03/04/26
11° 5% -
04/04/26
9° 4%
Weather forecast for Merthyr Tydfil (8.7 miles away) updated 03/04/26 at 12:00. Powered by Met Office data.
Local light pollution
Parc Penallta is estimated to have light pollution levels similar to a suburban 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.
Fri 3rd Apr
Sat 4th Apr
Sun 5th Apr
Mon 6th Apr
Tue 7th Apr
Wed 8th Apr
Thu 9th 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.