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One page of sourced numbers per city: what a day costs, what the travel advisory says, and which months score best on the weather.

Data: GeoNames, Open-Meteo, World Bank, US State Department, UK FCDO.

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© 2026 Travel City Index. Every number on this site comes from a dataset named on the page that shows it.
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Argentina · Peru

Buenos Aires vs Lima: cost, safety and weather compared (2026)

Every figure below comes from the same datasets for both cities, so the two columns are comparable.

Buenos Aires and Lima compared on cost, safety, weather and size
Buenos AiresArgentinaLimaPeru
Daily cost, per personestimate
Budget$45$60
Mid-range$110$140
Luxury$235$300
Price level0.46× US (2025)0.51× US (2025)
US advisoryLevel 1Level 2
Best monthsJan, Feb, Oct and NovJan, Feb, Mar and Apr
Annual rain1,084 mm57 mm
Average high21.9 °C22.0 °C
Population2.9M7.7M
Time zoneAmerica/Argentina/Buenos_AiresAmerica/Lima

The short answer

Buenos Aires is about 21 % cheaper per day than Lima, $110 against $140 (mid-range estimate). Buenos Aires has the lower US advisory level (1 vs 2). In September, the daily average is 15 °C in Buenos Aires and 17 °C in Lima.

Keep reading

City overviews

  • Buenos Aires overview
  • Lima overview

Cost and safety in detail

  • Buenos Aires trip cost
  • Is Buenos Aires safe?
  • Lima trip cost
  • Is Lima safe?

Where they rank

  • Cheapest cities in South America
  • Safest cities in South America

Countries

  • All cities in Argentina
  • All cities in Peru

Sources

  • GeoNames city database — CC BY 4.0, fetched September 14, 2026
  • Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026
  • World Bank price level and exchange rate — CC BY 4.0, data year 2025
  • US State Department travel advisories — public domain, fetched September 21, 2026

Dates are the most recent fetch across the cities on this page. Every sentence here is generated from the data by rule, with no AI writing; the formulas are public.