Manaus vs. Rio de Janeiro: Which Is Closer to the Equator?

Manaus is much closer to the equator.

• Manaus: 3°06′S (3.1° south latitude)
• Rio de Janeiro: 22°54′S (22.9° south latitude)

Manaus lies deep in the Amazon Basin, just 340 km (210 mi) south of the equator. Rio is over 2,500 km (1,550 mi) south—near the Tropic of Capricorn.

Implications

• Climate: Manaus: tropical rainforest (Af), no dry season, constant heat/humidity. Rio: tropical savanna (Aw), distinct dry winter.
• Day Length: Manaus ~12h year-round. Rio varies 10.5–13.5h.
• Biodiversity: Manaus in core Amazon; Rio in Atlantic Forest (high but different).