Manaus Stargazing & Astronomy Report
Light pollution and stargazing locations near Manaus
- City
- Manaus
- Country
- Brazil
- Latitude
- -3.1190
- Longitude
- -60.0217
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 17.67
- Bortle class
- Class 9 (Class 9)
- Darkness Quotient
- 20%
- Dataset
- March 2026
Inner city sky
Stargazing in Manaus
Manaus is a major Amazonian metropolis in northern Brazil, a river city deep within the rainforest and the principal urban hub of Amazonas state.
The city generally experiences Extreme Light Pollution, with a Darkness Quotient of 20% — placing it among the more light-polluted urban skies for astronomy.
For practical observing from within the city, the most reliable targets are the Moon, bright planets, double stars and the brightest open clusters. Fainter nebulae and galaxies are largely washed out by the urban skyglow, though a few showpiece objects can still be attempted with patience.
Truly dark skies are not close at hand from Manaus, and a serious improvement means leaving the city far behind. The nearest standout dark site in the supplied data is around 270 kilometres away, with excellent conditions near Novo Airão, Amazonas to the north-north-west.
The map shows Manaus as a strong, concentrated urban core with a bright white-pink centre surrounded by red, yellow and green, then fading through blue into a broad grey glow. In plain terms, the city forms a dominant light dome that clearly outshines the surrounding region.
Away from the centre, the pattern becomes much darker quite quickly, but there are also strings and clusters of smaller bright pockets extending especially towards the east and north-east, with additional isolated glows in other directions. That suggests Manaus sits within a wider network of settlements and lit corridors rather than in complete darkness immediately beyond the urban edge.
The darkest areas on the crop are the black regions away from these clusters, particularly where the city halo thins out between the scattered lights. Even so, the contrast is striking: Manaus is plainly the brightest source in the frame, and the city dominates the night environment over a very large surrounding area.
How the sky feels overhead
Looking straight up from Manaus, the sky is heavily brightened by urban light and lacks the rich, high-contrast appearance associated with darker locations. The brightest stars and familiar constellations still show through, but the background never becomes properly black.
This kind of sky usually means the Moon and planets remain easy, while dimmer star fields lose much of their texture and faint deep-sky objects struggle badly. Even when transparency is good, the city glow keeps the sky looking shallow rather than richly layered.
For casual skywatching that is still enough for a rewarding look at bright showpieces, but it is not the sort of zenith that reveals the Milky Way in any convincing way from within the city.
north - poor
About 15 kilometres north of Manaus, the sky is still poor, at roughly Bortle 8, so city glow remains a major limitation. Conditions improve strongly further out, with genuinely dark skies reached at around 100 kilometres in this direction.
north-north-east - poor
About 15 kilometres to the north-north-east, the sky remains poor at around Bortle 8, with heavy urban brightening still obvious. A much darker sky becomes available at roughly 100 kilometres in this direction.
north-east - poor
Around 15 kilometres north-east of the city, conditions are still poor at about Bortle 8. The sky improves dramatically farther out, with genuinely dark conditions reached at around 100 kilometres.
east-north-east - poor
At roughly 15 kilometres east-north-east, the sky is still poor, around Bortle 8, so this is not yet a true escape from Manaus's light dome. The good news is that substantially darker skies arrive sooner here, with very dark conditions reached at around 50 kilometres.
east - poor
Around 15 kilometres east, the sky is still poor at about Bortle 7, though it is beginning to improve compared with the city centre. A major step up comes by roughly 50 kilometres, where the sky reaches very dark territory.
east-south-east - marginal
At about 15 kilometres east-south-east, the sky is marginal at around Bortle 6, showing a noticeable improvement over central Manaus but still plenty of glow. Very dark skies are reachable at roughly 50 kilometres in this direction.
south-east - marginal
Roughly 15 kilometres south-east of Manaus, the sky is marginal at around Bortle 6. Push farther out and this becomes one of the more promising directions, with very dark conditions reached at about 50 kilometres.
south-south-east - marginal
At around 15 kilometres south-south-east, the sky is marginal, near Bortle 6, so brighter targets remain the realistic choice. Much darker skies are available by roughly 50 kilometres, with excellent conditions farther out still.
south - fair
About 15 kilometres south of the city, the sky is fair at around Bortle 5, making this one of the better quick-escape directions. A clearly dark sky is reached at roughly 50 kilometres, with even stronger conditions beyond that.
south-south-west - marginal
At around 15 kilometres south-south-west, the sky is marginal at roughly Bortle 6. Continue outward and conditions improve well, reaching very dark sky at about 50 kilometres.
south-west - marginal
Roughly 15 kilometres south-west of Manaus, the sky is marginal at around Bortle 6. This direction improves substantially with distance, reaching very dark conditions at about 50 kilometres.
west-south-west - marginal
At about 15 kilometres west-south-west, the sky is marginal, around Bortle 6, so there is some relief from the city but not a dramatic one. Genuinely dark sky takes longer in this direction, becoming available at roughly 100 kilometres.
west - marginal
Around 15 kilometres west, the sky is marginal at about Bortle 6. A much better observing environment appears by roughly 50 kilometres, where the sky becomes very dark.
west-north-west - marginal
At roughly 15 kilometres west-north-west, the sky is marginal at around Bortle 6. Travel farther and conditions improve strongly, with very dark sky reached at about 50 kilometres.
north-west - poor
About 15 kilometres north-west of Manaus, the sky is still poor at roughly Bortle 7. The direction does improve well farther out, with very dark sky available at around 50 kilometres.
north-north-west - poor
At around 15 kilometres north-north-west, the sky remains poor, near Bortle 8, with obvious urban glow still present. Genuinely dark conditions arrive farther out at roughly 100 kilometres in this direction.
zenith - poor
Looking straight up from Manaus, the zenith is poor, corresponding to Bortle 9 and an SQM reading of 17.67. The sky overhead is bright rather than truly dark, so familiar star patterns are visible but the background glow suppresses fainter stars and removes any realistic chance of seeing the Milky Way well from the city.
-
Near Novo Airão, Amazonas
- Direction
- NNW
- Distance (km)
- 269.2
- SQM
- 21.84
- Bortle
- 2
Milky Way, faint nebulae, deep-sky imaging
-
Near Borba, Amazonas
- Direction
- SSE
- Distance (km)
- 270.8
- SQM
- 21.79
- Bortle
- 2
Milky Way, faint nebulae, deep-sky imaging
-
Near Urucará, Amazonas
- Direction
- NE
- Distance (km)
- 272.1
- SQM
- 21.71
- Bortle
- 2
Milky Way, faint nebulae, deep-sky imaging
Genuinely dark skies require a significant journey from Manaus rather than a quick trip out of town.
The nearest top-quality site in the supplied data is roughly 270 kilometres away to the north-north-west, near Novo Airão, Amazonas, where conditions reach Bortle 2. A similarly dark option also appears at a comparable distance in other directions, so the key point is that you need a long run away from the city before the sky becomes truly excellent.
-
Within 500 km
- Place
- Near Novo Airão, Amazonas
- Direction
- NNW
- Distance (km)
- 269.2
- SQM
- 21.84
- Bortle
- 2
Long-term sky trend
The long-term picture for Manaus points to a substantial brightening of the night sky over time. The earliest value in the record is 21.79 SQM, while the latest is 17.67 SQM, a very large shift towards brighter conditions.
Across 76 datasets, the mean reading is 18.02 SQM, with values ranging from 17.56 to 21.79 SQM. The trend slope of -0.015 SQM per year suggests a gradual long-term decline overall, but the full historical spread also shows that conditions have varied markedly across the record.
For observers, the practical takeaway is simple: Manaus now presents a much brighter urban sky than the best readings in its archive would suggest. That makes local stargazing more limited than the older end of the record might imply.
From within Manaus, urban light pollution strongly favours bright, high-contrast targets. The Moon, planets and double stars are the most dependable choices, with the brightest open clusters also worth a look.
A few showpiece deep-sky objects can still be attempted, especially bright nebulae such as M42 and the brightest globular clusters, but they will lack subtle detail and contrast. Expectations matter here: these are compromise targets rather than easy wins.
For the Milky Way, faint galaxies, large diffuse nebulae and meteor watching, a much darker site is vastly better. Those are the kinds of targets that benefit most from getting well away from Manaus's skyglow.
- Moon
- planets
- double stars
- brightest open clusters
- bright nebulae such as M42
- the brightest globular clusters
- Milky Way
- faint galaxies
- broadband nebulae
- meteor showers
Can you see stars from Manaus?
Yes — you can still see stars from Manaus, including the brighter constellations and standout stars, but the overall star count is heavily reduced by the city's bright sky.
Can you see the Milky Way from Manaus?
Not realistically from most of the city. With Bortle 9 conditions and an SQM reading of 17.67, the urban sky is simply too bright for a good Milky Way view.
What Bortle class is Manaus?
Manaus is Bortle Class 9, which is an inner-city sky and the brightest end of the scale for light pollution.
What is the SQM in Manaus?
The measured sky brightness for Manaus is 17.67 SQM.
Where are the nearest dark skies to Manaus?
The nearest standout dark-sky site in the supplied data is Near Novo Airão, Amazonas, about 269 kilometres to the north-north-west, where the sky reaches Bortle 2. Other similarly dark options appear at comparable distances near Borba and Urucará.
Is Manaus good for astrophotography?
It can work for lunar, planetary and some bright-object astrophotography, but it is not a strong city for faint deep-sky imaging. For the best astrophotography results, especially wide-field nightscapes or faint nebulae, a much darker site is the better choice.
How far do you need to drive from Manaus for darker skies?
For a clear improvement, heading roughly 50 kilometres in several directions can bring much darker skies than the city centre. For the nearest top-quality dark sky listed here, you are looking at about 270 kilometres.