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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05/05/26
14° 5% -
05/05/26
14° 7% -
05/05/26
13° 2% -
06/05/26
10° 10%
Weather forecast for Merthyr Tydfil (8.7 miles away) updated 05/05/26 at 06:01. 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.
Tue 5th May
Wed 6th May
Thu 7th May
Fri 8th May
Sat 9th May
Sun 10th May
Mon 11th May
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.