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Harlech Castle

Harlech Castle

Twitil, Harlech, Gwynedd, LL46 2YH

Best time to visit

Harlech Castle is a private location and is only accessible out of normal hours for stargazing by prior arrangement or when public events are scheduled.

Weather forecast

  • 06/05/24

    13° 0%

  • 06/05/24

    12° 7%

  • 07/05/24

    11° 4%

  • 07/05/24

    11° 2%

Weather forecast for Harlech Castle (0.1 miles away) updated 06/05/24 at 20:00.

Local light pollution

Harlech Castle is estimated to have light pollution levels similar to asuburban suburban location based on the latest data from the VIIRS satellite.

The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.

Light pollution map of Harlech Castle

Best time to visit

The Moon has a big impact on the visibility of celestial bodies in the night sky. Try to plan your stargazing when there is no bright Moon at night as this is when the skies will be at their darkest.

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.

Moon phase on Mon 6th May

Mon 6th May

Waning Crescent
6 % illuminated
Dark from 21:29 to 02:53
Dark for 5h 23m
Moon phase on Tue 7th May

Tue 7th May

New Moon
2 % illuminated
Dark from 21:32 to 02:50
Dark for 5h 17m
Moon phase on Wed 8th May

Wed 8th May

New Moon
0 % illuminated
Dark from 21:35 to 02:48
Dark for 5h 12m
Moon phase on Thu 9th May

Thu 9th May

New Moon
1 % illuminated
Dark from 22:36 to 02:45
Dark for 4h 9m
Moon phase on Fri 10th May

Fri 10th May

Waxing Crescent
5 % illuminated
Dark from 23:52 to 02:42
Dark for 2h 50m
Moon phase on Sat 11th May

Sat 11th May

Waxing Crescent
10 % illuminated
Dark from 00:47 to 02:40
Dark for 1h 53m
Moon phase on Sun 12th May

Sun 12th May

Waxing Crescent
18 % illuminated
Dark from 01:24 to 02:37
Dark for 1h 13m

Find more dates

If you are planning to visit this location check our dark sky calendar to find out when is best!

Calendar

Events nearby

Display nearby events on a calendar

  • Gwynedd Astronomy Society meeting

    Thursday 6th June 2024 from 19:30pm to 21:00pm

    Treborth Botanic Garden, Gwynedd, LL57 2RQ (24.8 miles away)

    More info

  • Gwynedd Astronomy Society meeting

    Thursday 4th July 2024 from 19:30pm to 21:00pm

    Treborth Botanic Garden, Gwynedd, LL57 2RQ (24.8 miles away)

    More info

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