Comparison
KR · South Korea

Seoul

9,668,465 residents37.56°, 126.99°
CN · People's Republic of China

Shanghai

24,870,895 residents31.23°, 121.47°

Seoul is slightly cooler than Shanghai; Shanghai is about 3× the size of Seoul by population.

01 · Basics

At a glance

Population
9,668,465
24,870,895
Metro populationno data
Area (km²)
605.25
6,341
Density (per km²)no data
Elevation (m)
38
4
02 · Climate

Weather, month by month

Solid lines are monthly highs, dashed lines are lows (°C).
Seoul high low Shanghai high low
Seoul vs Shanghai monthly temperature-10°-5°10°15°20°25°30°35°JFMAMJJASOND
Avg annual temp (°C)
12.2
17.2
Annual rainfall (mm)lower is better
1,210.5leads
1,419.1
Sunny days per yearno data
03 · Cost

Cost of living

Benchmarked against New York City at 100. Higher = more expensive.
Rent · 1BR, city centerlower is better
1,284,468.09
no data
Rent · 1BR, outside centerlower is better
854,872.34
no data
Rent · 3BR, city centerlower is better
3,061,382.98
no data
Groceries indexno data
Inexpensive meallower is better
13,000
no data
Midrange meal for twolower is better
90,000
no data
Transit · monthly passlower is better
65,000
no data
Utilities per monthlower is better
230,981.29
no data
06 · Vibes

What locals say

Synthesized from upvoted comments on each city's subreddit.
Seoul

Living in Seoul feels like being in a city that runs on speed, density, and constant contrast. You can move from old neighborhoods and temple quiet to neon districts, massive malls, and subway-heavy daily routines in the same afternoon, and people seem to normalize that mix. The city is praised for being safe, efficient, and visually striking, but day-to-day life also carries pressure: high costs in some areas, language friction for foreigners, tourist fatigue in busy districts, and a culture that can feel strict about rules and manners. For many residents and long-term visitors, Seoul is exciting and convenient, but it can also feel impersonal, exhausting, and highly competitive under the surface.

Common complaints
  • Tourist fatigue / brusque service3
  • Language friction and navigation hassles3
  • Air pollution / fine dust2
  • Heat, mosquitoes, and seasonal discomfort2
  • Pressure and conformity2
Common praises
  • Safety and cleanliness4
  • Convenience and transit4
  • Food culture5
  • Beauty and atmosphere5
  • Helpful kindness from ordinary people3

“Just got back from my trip to South Korea and wow… every single day felt worth it. It’s definitely not the cheapest destination, but honestly, you get what you pay for. Clean streets, safe everywhere you go, amazing transportation, and the food? Unreal.”

r/travel· 1232 votes

“Mind you, it's not the message but the tone of the message and the general attitude. Seems they are tired of tourists there. Not sure we would like to come back.”

r/korea· 2063 votes
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

Seoul
Food

Seoul’s food scene comes across as dense, affordable in the street-food sense, and always on. People talk about kimbap, salt-grilled pork, gomtang, anju with soju, convenience-store snacks, and restaurants that stay open 24/7, plus the city’s comfort food culture around cafes, pojangmacha tents, and late-night eats. It is also practical and hyper-local: natives rely on Naver Maps, local reviews, and neighborhood knowledge to find good spots, while foreigners often need help ordering or understanding what they are seeing. The overall feeling is that you can eat extremely well here without much planning, as long as you can navigate the language and neighborhood conventions.

Nightlife

Nightlife in Seoul seems large, varied, and very neighborhood-specific: Itaewon for late-night improvisation and international crowds, Hongdae for bars and music-adjacent energy, Gangnam for organized meetups and upscale socializing, and Euljiro for chaotic tent bars and old-school drinking. People describe a city where you can end up sitting in a pojangmacha with salarymen, drinking soju and being fed anju by strangers, or looking for a hotel at 1 a.m. after a plan falls through. The city also has a strong after-hours infrastructure—PC bangs, 24-hour restaurants, jjimjilbangs, hotel bars, and all-night districts—so nightlife feels less like a single strip and more like a system. At the same time, some posts suggest that in tourist-heavy zones the vibe can be impatient or transactional, especially late at night.

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

Seoul
By the numbers

How locals feel

On paper, the weather looks dramatic and seasonal—snow, blossoms, rain, humid summers, crisp winters—and that spectacle is part of how people describe the city. In practice, locals seem to talk about weather in terms of inconvenience and survival: summer heat that makes a simple walk feel like punishment, mosquitoes that keep getting worse into the season, winter cold that can be beautiful but brutal, and fine dust days that turn into arguments about where the pollution comes from. The positive side is that the seasons are visible and emotionally vivid; the negative side is that Seoul’s weather is often something you work around rather than enjoy. People love photographing it, but they also give each other practical warnings about AC, repellent, and masks.

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

  • Seoul is slightly cooler than Shanghai.
  • Shanghai is about 3× the size of Seoul by population.
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