Nanaimo Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.75

Bortle class

Class 8 (Class 8)

Darkness Quotient

30%

Dataset

May 2026

City sky

Nanaimo: The Practical Verdict

Nanaimo is a small city in British Columbia, positioned on the eastern coast of Vancouver Island. Unfortunately, the stargazing opportunities here are quite limited due to high light pollution, making it challenging for serious astronomical observation. The predominant obstacle is the bright southern sky, which eradicates any chance of seeing the Milky Way.

From here, the Moon, planets, and bright stars are the primary targets for observation. While narrowband imaging is possible with care, deep-sky observing and galaxy hunting are best avoided. The south-south-east horizon is particularly bright, diminishing contrast, while the south-west provides the clearest views.

For those seeking a better viewing experience, Area F (Cowichan Lake South / Skutz Falls), about 45 km south-west, offers significantly darker skies. Making the drive to this location will greatly enhance deep-sky observing possibilities.

At a Glance

Overall

Poor city sky - This is a poor city sky. The Milky Way is not visible and most deep-sky observing is unrealistic from the location itself.

Milky Way

Not visible - The Milky Way is erased by the bright urban sky background.

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

Area F (Cowichan Lake South / Skutz Falls), British Columbia sits about 44 km south west and reaches Bortle 3, roughly 13x darker.

Moderate dark window

Nanaimo'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 Nanaimo?

No. Nanaimo is a Bortle Class 8 sky with SQM 18.75, 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 Nanaimo?

Nanaimo is Bortle Class 8 (SQM 18.75), a poor city sky for astronomy.

Is Nanaimo good for stargazing?

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

Is Nanaimo good for astrophotography?

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

What can you observe from Nanaimo?

Primary targets from Nanaimo 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 Nanaimo?

The closest meaningfully darker mapped site is Linley Valley, British Columbia, about 5 km south west of Nanaimo, reaching Bortle 6.

When is the sky darkest in Nanaimo?

The sky over Nanaimo is darkest around January, December.

Is light pollution in Nanaimo getting better or worse?

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

• Area B (DeCourcy/Gabriola/Mudge), British Columbia

  Direction

  E

  Distance (km)

  13.2

  SQM

  20.78

  Bortle

  5

• Area F (Cowichan Lake South / Skutz Falls), British Columbia

  Direction

  SW

  Distance (km)

  44.4

  SQM

  21.55

  Bortle

  3

• Area E (Lasqueti Island), British Columbia

  Direction

  NW

  Distance (km)

  40

  SQM

  21.31

  Bortle

  3

• Linley Valley, British Columbia

  Direction

  SW

  Distance (km)

  5

  SQM

  19.86

  Bortle

  6

• Area F (Cowichan Lake South / Skutz Falls), British Columbia

  Direction

  S

  Distance (km)

  47

  SQM

  21.27

  Bortle

  4

• Area A (Bamfield), British Columbia

  Direction

  W

  Distance (km)

  73

  SQM

  21.58

  Bortle

  3