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Hertford Castle

Hertford Castle

Water Lane, Hertford, Hertfordshire, SG14 1HR, East of England

Best time to visit

Hertford 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

  • 05/09/26

    19° 4%

  • 05/09/26

    19° 4%

  • 05/09/26

    19° 0%

  • 06/09/26

    16° 1%

Weather forecast for Potters Bar (7.9 miles away) updated 05/09/26 at 06:01. Powered by Met Office data.

Local light pollution

Hertford Castle 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.

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

Light pollution map of Hertford 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 5th Sep

Sat 5th Sep

Third Quarter
42 % illuminated
Dark from 19:55 to 22:36
Dark for 2h 40m
Moon phase on Sun 6th Sep

Sun 6th Sep

Third Quarter
31 % illuminated
Dark from 19:53 to 23:58
Dark for 4h 4m
Moon phase on Mon 7th Sep

Mon 7th Sep

Waning Crescent
21 % illuminated
Dark from 19:50 to 01:27
Dark for 5h 36m
Moon phase on Tue 8th Sep

Tue 8th Sep

Waning Crescent
12 % illuminated
Dark from 19:47 to 02:57
Dark for 7h 9m
Moon phase on Wed 9th Sep

Wed 9th Sep

Waning Crescent
6 % illuminated
Dark from 19:45 to 04:11
Dark for 8h 25m
Moon phase on Thu 10th Sep

Thu 10th Sep

New Moon
2 % illuminated
Dark from 19:42 to 04:13
Dark for 8h 30m
Moon phase on Fri 11th Sep

Fri 11th Sep

New Moon
0 % illuminated
Dark from 19:40 to 04:15
Dark for 8h 34m

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

  • Stargazing with the Baker Street Irregular Astronomers – March 2026

    Monday 7th September 2026 from 19:00pm to 22:00pm

    Primrose Hill - London, London, NW1 4RY (18.0 miles away)

    More info

  • Cambridge AstroPlus

    Monday 7th September 2026 from 19:15pm to 20:45pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA (29.9 miles away)

    More info

  • Thaxted Astronomical Society club meeting

    Wednesday 9th September 2026 from 20:00pm to 22:00pm

    The Swan - Thaxted, Thaxted, CM6 2PL (21.1 miles away)

    More info

  • Informal observing evening with Crayford Manor Astronomical Society

    Thursday 10th September 2026 from 19:45pm to 21:30pm

    The Dick Chambers Observatory, Dartford, DA4 9HD (29.5 miles away)

    More info

  • Loughton Astronomical Society meeting and observing

    Thursday 10th September 2026 from 20:00pm to 22:00pm

    Theydon Bois Scout Hall, Epping, CM16 7EJ (11.4 miles away)

    More info

Stay and gaze nearby

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