Comparison
BR · Brazil

Greater Rio de Janeiro

11,900,000 residents-22.90°, -43.21°
CN · People's Republic of China

Shanghai

24,870,895 residents31.23°, 121.47°

Shanghai is about 2× the size of Greater Rio de Janeiro by population.

01 · Basics

At a glance

Population
11,900,000
24,870,895
Metro populationno data
Area (km²)
no data
6,341
Density (per km²)no data
Elevation (m)
5
4
02 · Climate

Weather, month by month

Solid lines are monthly highs, dashed lines are lows (°C).
Greater Rio de Janeiro high low Shanghai high low
Greater Rio de Janeiro vs Shanghai monthly temperature-5°10°15°20°25°30°35°JFMAMJJASOND
Avg annual temp (°C)
no data
17.2
Annual rainfall (mm)lower is better
no data
1,419.1
Sunny days per yearno data
06 · Vibes

What locals say

Synthesized from upvoted comments on each city's subreddit.
Greater Rio de Janeiro

Greater Rio de Janeiro feels dramatic and uneven in the ordinary, with beaches, hills, and dense neighborhoods shaping daily routines as much as work does. Living there means balancing beautiful public spaces and a strong outdoor culture against long commutes, safety precautions, and the realities of an expensive big city. The city has a lively, social rhythm: people spend time outside, talk a lot, and build life around neighborhoods, bars, and the coast. At the same time, day-to-day convenience can be frustrated by traffic, transit gaps, and the need to stay alert in certain areas.

Common complaints
  • Safety and petty crime4
  • Traffic and long commutes4
  • Cost of living3
  • Transit reliability3
  • Uneven urban infrastructure2
Common praises
  • Natural setting5
  • Beach and outdoor culture4
  • Strong neighborhood identity4
  • Friendly, sociable culture3
  • Food and casual dining3
Shanghai

Shanghai feels highly urban and convenient, but not always warm or easy for outsiders. Residents and visitors describe a city with cheap transit, strong food options, and impressive skyline districts, alongside real friction from language barriers, scammy dating scenes, smoky taxis, and a shrinking expat ecosystem. Day to day it can feel surprisingly calm in some places and times, with empty subways, uncrowded landmark areas, and very late-night mobility that makes the city feel usable around the clock. At the same time, people talk about a city that has changed fast: old neighborhoods, street life, and parts of the international social scene have thinned out, leaving a place that feels more polished, more local, and less carefree than before.

Common complaints
  • Scams and predatory social scenes5
  • Foreign-language friction4
  • Smoky or rough taxis / transport hassles4
  • Cooling expat and international business ecosystem3
  • Loss of old neighborhoods and street life3
Common praises
  • Extreme convenience and cheap transport6
  • Food variety and quality5
  • Visual drama and architecture5
  • Safety and walkability at odd hours4
  • City energy mixed with calm pockets4

“The subway ride is less than $1 and so as uber rides. Very strange considering sky high real estate prices and income level.”

r/Shanghai· 1548 votes

“Not as foreign tourist friendly. Cabs smell like smoke and drivers are angry. Literally had one yelling at me because my ride was priced cheaply. Be nicer to foreign visitors maybe?”

r/Shanghai· 1548 votes
07 · Culture

Food & nightlife

Greater Rio de Janeiro
Food

Rio’s food scene is broad but deeply everyday rather than celebrity-driven: bakeries, churrascarias, kilo restaurants, juice bars, and beach snacks are part of normal life. You can eat cheaply and well if you know neighborhood spots, with strong basics like pão de queijo, acai, pastries, rice-and-beans plates, grilled meats, seafood, and cold drinks on hot days. More central and upscale areas have a refined restaurant scene, but many residents rely on practical local places that are fast, familiar, and sociable.

Nightlife

Nightlife in Greater Rio is social and neighborhood-based, with people moving between bars, street gatherings, samba spots, live music, and beach-adjacent areas rather than only formal clubs. The culture is lively and late, but it also feels localized: many residents pick a familiar zone and stay there rather than crisscrossing the city. Expect music, crowded bars, and a strong outdoor drinking culture, with safety and transport planning shaping how late people stay out.

Shanghai
Food

The food scene comes across as broad, convenient, and very good if you know where to look. Posts mention cheap everyday meals, late-night snacks, and easy access to delivery, while others rave about more polished dining experiences near the Bund and in central districts. At the same time, Shanghai is not portrayed as a place where language barriers disappear: reading menus can be a problem, and some of the most satisfying food appears to come from local spots that are not especially tourist-friendly. Overall it sounds like a city where food is both a daily utility and a serious pleasure, ranging from humble street-adjacent eats to high-end, theatrical restaurant experiences.

Nightlife

Nightlife sounds lively but somewhat changed from its peak years. Long-time residents describe a club scene that used to run very late and feel exciting, even with periodic raids and tension, while newer posts are thinner on a big, open party culture and more focused on bars, meetups, and occasional live music. The city still has a reputation for being able to go out late, but the tone is less carefree and more cautious, with scams and overcharging showing up in the social scene. In practice, nightlife seems strongest in central areas and among people already plugged into local networks.

08 · Reality check

Weather vs. what locals say

Greater Rio de Janeiro
By the numbers

How locals feel

On paper, Rio’s weather looks almost ideal: warm temperatures, lots of sun, and a climate that supports year-round outdoor life. Locals, though, talk more about heat, humidity, sudden rain, and the discomfort of the hottest months than about any postcard version of perfect weather. The upside is that the climate keeps the city active and outdoor-oriented; the downside is that it can be sticky, draining, and occasionally disruptive.

Shanghai
By the numbers

How locals feel

People describe Shanghai’s weather as more oppressive than romantic: hot, humid summers, rain that can be nonstop, and frequent comments about how the conditions affect walking around and crowd levels. There is also appreciation for the city’s atmosphere after rain or at sunrise, when the light and emptier streets can make it feel beautiful. In other words, the weather is not praised as pleasant in a neutral, year-round sense, but it is often treated as something that sharpens the city’s moods and photography-friendly moments. The stats may say it is a major coastal metropolis, but locals and visitors seem to remember the humidity, storms, and seasonal discomfort first.

09 · Summary

In short

  • Shanghai is about 2× the size of Greater Rio de Janeiro by population.
Compare another pair
Plan a trip

Book your visit

Partner links — CityDiff may earn a commission at no extra cost to you.

More

Related comparisons

Profiles

Full city profiles