Cape Town Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.85

Bortle class

Class 9 (Class 9)

Darkness Quotient

22%

Dataset

July 2026

Inner city sky

Cape Town: The Practical Verdict

Cape Town, a major city in the Western Cape, presents a challenging environment for astronomers due to its severe urban sky. The bright city lights create high light pollution, making the sky unsuitable for deep-sky observations. The subdued visibility limits stargazing to the brightest objects.

From within Cape Town, the Milky Way is not visible, and ambitious targets such as reflection nebulae and most meteor showers are unrealistic. However, you can still enjoy observing the Moon, planets, and bright stars. These targets are the most accessible given the city's intense light pollution.

For improved conditions, consider travelling south-east to Overstrand Ward 10, approximately 60 km away. This location provides a significant enhancement with its darker sky, classified as Bortle 4, allowing for deeper astronomical observations.

At a Glance

Overall

Severe urban sky - This is a severely light-polluted urban sky. Only the Moon, planets, bright stars, and a few specialist targets remain practical.

Milky Way

Not visible - The Milky Way is not visible from this sky.

Best targets from here

Moon, planets, bright stars, double stars, solar system events, narrowband imaging only with care

Do not prioritise

visual deep-sky observing, broadband galaxies, reflection nebulae, widefield Milky Way

Best nearby upgrade

Overstrand Ward 10, Western Cape sits about 59 km south east and reaches Bortle 4, roughly 19x darker.

Good dark window

Cape Town's longest dark windows fall in June and July, with the shortest nights around December and January. For deep-sky imaging, winter gives the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Cape Town?

No. Cape Town is a Bortle Class 9 sky with SQM 17.85, 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 Cape Town?

Cape Town is Bortle Class 9 (SQM 17.85), a severe urban sky for astronomy.

Is Cape Town good for stargazing?

Not for serious deep-sky observing. Cape Town is a severe urban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.

Is Cape Town good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Cape Town and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Cape Town without careful processing.

What can you observe from Cape Town?

Primary targets from Cape Town include Moon, planets, bright stars, double stars, solar system events. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Cape Town?

The closest meaningfully darker mapped site is Stoneybrook Equestrian Estate, Western Cape, about 12 km south south west of Cape Town, reaching Bortle 6.

When is the sky darkest in Cape Town?

The sky over Cape Town is darkest around June, July.

Is light pollution in Cape Town getting better or worse?

Long-term light pollution over Cape Town has been broadly stable across the available measurements.

• Stoneybrook Equestrian Estate, Western Cape

  Direction

  SSW

  Distance (km)

  11.6

  SQM

  19.81

  Bortle

  6

• Overstrand Ward 10, Western Cape

  Direction

  SE

  Distance (km)

  59

  SQM

  21.03

  Bortle

  4

• Seaforth, Western Cape

  Direction

  S

  Distance (km)

  28.2

  SQM

  19.54

  Bortle

  7

• Swartland Ward 12, Western Cape

  Direction

  NE

  Distance (km)

  56

  SQM

  20.01

  Bortle

  6

• Saldanha Bay Ward 6, Western Cape

  Direction

  NNW

  Distance (km)

  94.5

  SQM

  20.96

  Bortle

  4

• Overstrand Ward 11, Western Cape

  Direction

  ESE

  Distance (km)

  126.7

  SQM

  21.11

  Bortle

  4