Map of Açu, Brazil

Açu is a city in Rio Grande do Norte, Brazil, with a population of about 56,496. It lies at 5.5767°S, 36.9086°W. Açu is about 1,653 km (1,027 mi) northeast of Brasília, the capital. The nearest city on our map is Mossoró, 65 km to the northwest.

Açu at a glance

Where is Açu?

• The 9th largest city in Rio Grande do Norte on this site.
• Located in the Southern and Western hemispheres.
• Daylight ranges from about 11 h 48 min on the shortest day to 12 h 27 min on the longest day (around 21 June and 21 December).

Cities near Açu

• Mossoró — 65 km northwest
• Currais Novos — 87 km southeast
• Apodi — 99 km west
• Caicó — 100 km south
• João Câmara — 121 km east
• Santa Cruz — 122 km southeast
• Russas — 138 km northwest
• Aracati — 148 km northwest
• Ceará Mirim — 164 km east
• Macaíba — 175 km east

Largest cities in Rio Grande do Norte

• Natal — 896,708
• Parnamirim — 271,713
• Mossoró — 264,577
• São Gonçalo do Amarante — 115,838
• Macaíba — 81,821
• Ceará Mirim — 79,115
• Extremoz — 61,635
• Caicó — 61,146
• São José de Mipibu — 47,286
• Currais Novos — 44,905

Largest cities in Brazil

• São Paulo — 12,400,232
• Rio de Janeiro — 6,747,815
• Belo Horizonte — 2,721,564
• Salvador — 2,711,840
• Fortaleza — 2,400,000
• Manaus — 2,219,580
• Brasília — 2,207,718
• Curitiba — 1,948,626
• Recife — 1,653,461
• Goiânia — 1,536,097

Map of Brazil and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.