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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

  • 07/09/24

    20° 8%

  • 07/09/24

    18° 4%

  • 08/09/24

    17° 5%

  • 08/09/24

    17° 8%

Weather forecast for Harlech Castle (0.1 miles away) updated 07/09/24 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 Sat 7th Sep

Sat 7th Sep

Waxing Crescent
13 % illuminated
Dark from 20:08 to 04:21
Dark for 8h 12m
Moon phase on Sun 8th Sep

Sun 8th Sep

Waxing Crescent
20 % illuminated
Dark from 20:06 to 04:23
Dark for 8h 16m
Moon phase on Mon 9th Sep

Mon 9th Sep

Waxing Crescent
29 % illuminated
Dark from 20:22 to 04:25
Dark for 8h 3m
Moon phase on Tue 10th Sep

Tue 10th Sep

First Quarter
38 % illuminated
Dark from 20:50 to 04:27
Dark for 7h 37m
Moon phase on Wed 11th Sep

Wed 11th Sep

First Quarter
48 % illuminated
Dark from 21:33 to 04:29
Dark for 6h 56m
Moon phase on Thu 12th Sep

Thu 12th Sep

First Quarter
58 % illuminated
Dark from 22:34 to 04:31
Dark for 5h 57m
Moon phase on Fri 13th Sep

Fri 13th Sep

First Quarter
68 % illuminated
Dark from 23:55 to 04:33
Dark for 4h 38m

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

  • Bardsey/Ynys Enlli Day and Night Photography Experience

    Saturday 23rd August 2025 from 12:00pm to Saturday 30th August 2025 12:00pm

    Bardsey Island - Hendy, Bardsey Island, LL53 8DE (29.3 miles away)

    More info

Stay and gaze nearby

Stay at one of these stargazing-friendly accommodation providers.

  • Cadair View Lodge Log Cabins

    Trawsfynydd, Snowdonia, Gwynedd, LL41 4YB (8.3 miles away)

    Stay & Gaze

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  • Cabin under the Stars

    Bronaber, Snowdonia, Gwynedd, LL41 4YB (8.4 miles away)

    Stay & Gaze

    More info

  • Llys Ednowain Hostel

    Station Road, Trawsfynydd, Gwynedd, LL41 4UB (8.4 miles away)

    Stay & Gaze

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  • Yr Hen Stabal

    Trawsfynydd, Blaenau Ffestiniog, Gwynedd, LL41 4TL, null Wales (8.9 miles away)

    Stay & Gaze

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  • Cae Du Caravan and Camping Park

    Beddgelert, Gwynedd, Gwynedd, LL55 4NE, North Wales (10.8 miles away)

    Stay & Gaze

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  • Cae Lleci Holiday Cottage

    Llanfachreth, Dolgellau, Gwynedd, LL40 2EH, Wales (12.4 miles away)

    Stay & Gaze

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