Stargazing in Santarem, Pará, Brazil

Dark-sky rating for Santarem

Santarem, Pará, Brazil is a mid-sized city (population about 360,871). A place this size typically has a bright suburban sky: main constellations are easy, the Milky Way is washed out. That is an estimate of Bortle class 5–6 from population, not a measurement: the real value depends on the exact spot you observe from.

For a measured reading at any point, open the live Dark Sky map.

Nearest dark-sky places and observatories

No certified dark-sky place or observatory in our registry lies within 150 km of Santarem. Our list only includes genuine, publicly documented sites, so none is shown rather than guessed.

Milky Way season in Santarem

The bright core of the Milky Way climbs high above the horizon haze. It climbs at least 20° above the horizon during astronomical darkness in February, March, April, May, June, July, August, September, October, peaking in April at about 63°.

• The south celestial pole stands 2.4° above the horizon, so stars within 2° of it never set from here.
• About 52.1% of the whole sky rises above the horizon at some point in the year from this latitude.
• The Milky Way's core in Sagittarius culminates about 63.4° up, clearing the horizon haze comfortably.
• The Large Magellanic Cloud only reaches about 22.7° altitude, so it is a low, seasonal target rather than a year-round one.
• At 51 m elevation, roughly 1% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.

Tonight and aurora

As of October 17, 2026 (UTC) the Moon is a Waxing Crescent at 38% illumination. Aurora at 2.4° latitude generally needs about Kp 9.0.

Nearby places

• Itaituba, Pará, Brazil
• Altamira, Pará, Brazil