Recife Stargazing & Astronomy Report

Light pollution and stargazing locations near Recife

City
Recife
Country
Brazil
Latitude
-8.0476
Longitude
-34.8770

Key Sky Quality Metrics

SQM (mag/arcsec²)
17.74
Bortle class
Class 9 (Class 9)
Darkness Quotient
21%
Dataset
March 2026

Inner city sky

Recife: The Practical Verdict

Recife is a major coastal city in north-eastern Brazil, a busy Atlantic metropolis known for its port, beaches and dense urban sprawl.

The city generally experiences High Light Pollution, with a Darkness Quotient of 21% — placing it among the more light-polluted large cities, though not quite at the very worst extreme.

For practical observing from within the city, the strongest targets are the Moon, planets, double stars and the brightest open clusters. Fainter deep-sky objects are heavily suppressed by the urban glow, with only a few standout showpieces managing to break through.

Meaningfully darker skies do require leaving the city behind. The nearest reasonable dark-sky improvement is roughly 105 kilometres to the north-west near Near Itatuba, ParaĂ­ba, while a similarly good option lies about 110 kilometres to the south-west near Near JacuĂ­pe, Alagoas.

The map shows Recife as an intense bright coastal concentration, with a vivid white-pink core wrapped in red and orange light that spills along the shoreline and into the surrounding urban area. This is the classic pattern of a large, luminous city whose skyglow dominates its immediate surroundings.

Away from the centre, the colours soften inland through yellow, green and then blue, showing that conditions do improve once you move away from the built-up coastal belt. The darkest-looking areas on the map sit mainly inland to the west and south-west, where larger patches of grey and darker tones begin to appear between smaller settlements.

Compared with its surroundings, Recife is clearly one of the brightest features in the frame. The sea to the east is naturally dark on the map, but for land-based observing the more promising direction is inland, where the urban glow gradually weakens and genuinely better skies become possible.

What the sky overhead is like

Looking straight up from Recife, the zenith is bright by astronomical standards, corresponding to an inner-city sky. The background never gets truly black, and contrast on faint objects is poor even when transparency is good.

You should still see the brighter constellations and the more obvious stars that outline familiar patterns, but the sky will look thinned out compared with a rural site. The brightest planets and the Moon stand out well, while subtler star fields and faint haze-like deep-sky objects are largely washed away.

In visual terms, this is a sky where urban glow sets the tone even overhead, not just near the horizon. The result is a serviceable sky for casual observing of bright targets, but a restrictive one for serious deep-sky work.

north - poor

Fifteen kilometres north of Recife, the sky is still poor for astronomy, with Bortle 8 conditions and a strong urban glow. It does improve further out, but genuinely dark skies in this direction are a long way off, only becoming available at around 200 kilometres.

north-north-east - poor

At around 15 kilometres to the north-north-east, conditions are still poor, sitting in Bortle 8 territory. The improvement is much stronger farther out, with good rural skies appearing by about 50 kilometres and genuinely dark skies only much farther away.

north-east - marginal

Around 15 kilometres to the north-east, the sky improves to marginal quality at Bortle 6, so the worst of the city glow has eased but not disappeared. If you continue outward, good skies arrive at about 50 kilometres and genuinely dark conditions are reachable from roughly 100 kilometres.

east-north-east - marginal

Fifteen kilometres east-north-east of Recife, the sky is marginal at Bortle 6, offering a noticeable but still limited improvement over the city. This is one of the stronger directions, with genuinely dark skies becoming reachable from around 50 kilometres.

east - marginal

At about 15 kilometres due east, conditions are marginal, around Bortle 6. The sky improves quite efficiently in this direction, with genuinely dark conditions becoming possible from roughly 50 kilometres.

east-south-east - marginal

Fifteen kilometres east-south-east of the city, the sky is marginal at Bortle 6, so brighter objects remain the most rewarding targets. This direction improves well with distance, and genuinely dark skies are reachable from around 50 kilometres.

south-east - marginal

Around 15 kilometres south-east of Recife, the sky is still only marginal, at Bortle 6. It becomes good by roughly 50 kilometres, and genuinely dark skies are available farther out at around 100 kilometres.

south-south-east - marginal

At roughly 15 kilometres to the south-south-east, the sky remains marginal with Bortle 6 conditions. It does improve meaningfully beyond the city halo, with good skies at about 50 kilometres and genuinely dark conditions from around 100 kilometres.

south - poor

Fifteen kilometres south of Recife, the sky is still poor at Bortle 7, with the urban dome remaining obvious. Better conditions do arrive farther out, and genuinely dark skies in this direction appear from about 100 kilometres.

south-south-west - poor

Around 15 kilometres south-south-west, the sky is still poor, essentially inner-urban in character at Bortle 9. There is some improvement with distance, but genuinely dark skies are not reached within the sampled radius in this direction.

south-west - poor

Fifteen kilometres south-west of Recife, conditions remain poor at Bortle 8. The sky does become meaningfully better farther inland, reaching good quality only much farther out, but genuinely dark skies are not reached within the sampled radius in this direction.

west-south-west - poor

At about 15 kilometres west-south-west, the sky is still poor, with Bortle 8 brightness. There is worthwhile improvement deeper inland, eventually reaching good quality, but genuinely dark skies are not reached within the sampled radius here.

west - poor

Fifteen kilometres west of Recife, the sky remains poor at Bortle 8, so the city's glow is still a major factor. It gradually improves with distance, though genuinely dark conditions in this direction only appear at around 200 kilometres.

west-north-west - poor

Around 15 kilometres west-north-west, the sky is poor, corresponding to Bortle 8. Better conditions are available farther out, but genuinely dark skies in this direction require a long journey of about 200 kilometres.

north-west - poor

Fifteen kilometres north-west of the city, the sky is still poor at Bortle 7. It improves steadily inland, with good skies appearing farther out and genuinely dark conditions arriving only at around 200 kilometres.

north-north-west - poor

At roughly 15 kilometres north-north-west, the sky remains poor with Bortle 8 conditions. There is a gradual improvement farther out, but genuinely dark skies are not reached within the sampled radius in this direction.

zenith - poor

Looking straight up from Recife, the zenith is poor for deep-sky observing, with Bortle 9 brightness and an SQM reading of 17.74. Familiar constellations and brighter stars are visible, but the sky background is bright, the light dome affects the whole scene, and faint Milky Way structure is overwhelmed.

  • Near SĂŁo JosĂ© da Laje, Alagoas
    Direction
    SW
    Distance (km)
    159.7
    SQM
    20.98
    Bortle
    4

    Bright nebulae, galaxies, narrowband imaging

  • Near JacuĂ­pe, Alagoas
    Direction
    SW
    Distance (km)
    111.4
    SQM
    20.93
    Bortle
    4

    Bright nebulae, galaxies, narrowband imaging

  • Near Itatuba, ParaĂ­ba
    Direction
    NW
    Distance (km)
    105.5
    SQM
    20.89
    Bortle
    4

    Bright nebulae, galaxies, narrowband imaging

Historical Light Pollution Trends

Recife's long-term trend is fairly steady, but with a slight drift towards brighter skies over time. The trend slope is -0.0145 SQM per year, which points to a gradual worsening rather than any dramatic change.

The earliest reading in the series was 17.78, while the latest is 17.74, so the city is a touch brighter now than at the beginning of the record. Across 76 datasets the mean sits at 17.91, suggesting that today's conditions are close to Recife's typical recent baseline rather than an outlier.

The full range runs from 17.56 to 22.00, which implies occasional much darker readings in the historical set, but the prevailing picture for the city itself remains one of strongly light-polluted urban sky. In practical terms, observers should expect broadly similar city-centre conditions from year to year, with only modest change.