Southend-on-Sea Stargazing & Astronomy Report

Light pollution and stargazing locations near Southend-on-Sea

City
Southend-on-Sea
Country
United Kingdom
Latitude
51.5362
Longitude
0.7127

Key Sky Quality Metrics

SQM (mag/arcsec²)
19.03
Bortle class
Class 7 (Class 7)
Darkness Quotient
33%
Dataset
May 2026

Suburban/urban transition

Southend-on-Sea: The Practical Verdict

Southend-on-Sea is a small city in Essex, with a suburban setting that struggles with high light pollution. The overall quality for astronomy here is poor for urban/suburban skies, making it challenging to glimpse anything beyond the brightest objects.

From this location, the Milky Way is not visible, and observers are limited to targets like the Moon, planets, and bright double stars. Fainter objects are largely lost in the skyglow, making deep-sky observing impractical. Astrophotography is feasible but requires narrowband imaging to cut through the heavy light pollution.

For those seeking deeper cosmos experiences, Lynford, located to the south-south-east, provides a much darker alternative. At roughly 105 km away, it offers a significant improvement for stargazers willing to make the trip.

At a Glance

Overall
Poor urban/suburban sky - This is a poor sky for astronomy. The Moon, planets, and a few bright objects remain viable, but deep-sky work is difficult.
Milky Way
Not visible - The Milky Way is not realistically visible from this level of light pollution.
Best targets from here
Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing
Do not prioritise
visual deep-sky observing, broadband galaxies, reflection nebulae, Milky Way photography
Best nearby upgrade
Lynford sits about 106 km south south east and reaches Bortle 4, roughly 5.1x darker.
Moderate dark window
Southend-on-Sea's longest dark windows fall in December and January, with the shortest nights around June and July. Plan deep-sky sessions around the autumn and winter months for the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Southend-on-Sea?

No. Southend-on-Sea is a Bortle Class 7 sky with SQM 19.03, so the Milky Way is not visible from the city. For Milky Way photography, look for a Bortle 4 or darker site.

What Bortle class is Southend-on-Sea?

Southend-on-Sea is Bortle Class 7 (SQM 19.03), a poor urban/suburban sky for astronomy.

Is Southend-on-Sea good for stargazing?

Not for serious deep-sky observing. Southend-on-Sea is a poor urban/suburban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.

Is Southend-on-Sea good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Southend-on-Sea and a Bortle 4 or darker site is strongly recommended. Narrowband imaging of bright emission nebulae remains viable from Southend-on-Sea with appropriate Ha or OIII filters.

What can you observe from Southend-on-Sea?

Primary targets from Southend-on-Sea include Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Southend-on-Sea?

The closest meaningfully darker mapped site is Foulness, about 10 km east north east of Southend-on-Sea, reaching Bortle 5.

When is the sky darkest in Southend-on-Sea?

The sky over Southend-on-Sea is darkest around January, December. Significant summer limitation: around 59 nights per year have no true astronomical darkness.

Is light pollution in Southend-on-Sea getting better or worse?

Long-term light pollution over Southend-on-Sea has been broadly stable across the available measurements.

north - good

Dark horizon to the north. Faint stars and extended objects in this direction behave much as they do overhead.

north-north-east - good

Dark sky in the north-north-east direction with no obvious skyglow. Suitable for faint-object work at low elevation.

north-east - good

The north-east sky is dark to the horizon. Faint targets are accessible at all elevations here.

east-north-east - good

Dark sky in the east-north-east direction with no obvious skyglow. Suitable for faint-object work at low elevation.

east - good

The east sky is dark to the horizon. Faint targets are accessible at all elevations here.

east-south-east - good

The east-south-east horizon is dark. Faint stars are visible close to the ground.

south-east - good

Dark horizon to the south-east. Faint stars and extended objects in this direction behave much as they do overhead.

south-south-east - fair

A trace of skyglow near the south-south-east horizon. Stars are clear throughout this direction except very close to the ground.

south - good

The south horizon is dark. Faint stars are visible close to the ground.

south-south-west - good

Dark sky in the south-south-west direction with no obvious skyglow. Suitable for faint-object work at low elevation.

south-west - good

The south-west horizon is dark. Faint stars are visible close to the ground.

west-south-west - fair

A trace of skyglow near the west-south-west horizon. Stars are clear throughout this direction except very close to the ground.

west - fair

The west sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.

west-north-west - marginal

Noticeable glow on the west-north-west horizon. Stars below about 20 degrees in this direction are dimmed.

north-west - fair

The north-west sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.

north-north-west - good

No noticeable light pollution to the north-north-west. The sky in this direction is dark to the horizon.

zenith - fair

Overhead is brighter than natural but still usable. The Milky Way is absent; brighter Messier objects remain accessible.

  • Foulness
    Direction
    ENE
    Distance (km)
    10.2
    SQM
    20.56
    Bortle
    5
  • Barn Street
    Direction
    SW
    Distance (km)
    10.7
    SQM
    20.15
    Bortle
    6
  • Petham
    Direction
    SSE
    Distance (km)
    41.9
    SQM
    20.41
    Bortle
    5
  • Levington
    Direction
    NE
    Distance (km)
    61.8
    SQM
    20.80
    Bortle
    5
  • Ticehurst
    Direction
    SSW
    Distance (km)
    57.4
    SQM
    20.52
    Bortle
    5
  • Lynford
    Direction
    SSE
    Distance (km)
    106.4
    SQM
    20.80
    Bortle
    4