Buenos Aires vs Arequipa
In short
Calculated from the figures below, with no overall “who wins” score.
Rent
✓in Buenos Aires cheaper — −12%
Family groceries
✓in Arequipa cheaper — −61%
Internet
✓in Buenos Aires cheaper — −40%
In numbers
Exchange rate as of the date each figure was checked.
House or apartment rent
per month✓Buenos Aires≈ $752–899ARS 1,176,184–1,406,326cheaper by 12%Arequipa≈ $585–1,290S/ 2,000–4,420Family groceries
per monthBuenos Aires≈ $630ARS 985,617✓Arequipa≈ $243S/ 830cheaper by 61%Internet
per month✓Buenos Aires≈ $8.95–23ARS 13,999–35,774cheaper by 40%Arequipa≈ $26S/ 89.9Private school
per month✓Buenos Aires≈ $28–190ARS 44,300–296,700cheaper by 71%Arequipa≈ $219–519S/ 750–1,775Winter
averageBuenos Aires12 °C12 °CArequipa6–21 °C6–21 °CPrecipitation
per yearBuenos Aires1,260 mm1,260 mmArequipa94.6 mm94.6 mmReady-made house
purchase✓Buenos Aires$151–200k$151–200kcheaper by 46%Arequipa$157–490k$157–490k
By topic
A quick look at each city. Details and sources are on the city page.
Housing
Buenos Aires
A building maintenance fee: on average 337k pesos a month, on top of rent. For a three-room flat in Palermo, about 300k.
SpecialistLa Nacion: expensas in Buenos Aires, ConsorcioAbierto data on ~13,000 buildings · checked 28 Sep 2026
A flat with two bedrooms: Caballito 1.18 million pesos a month, Palermo 1.31 million, Núñez 1.41 million. Expensas on top.
OfficialIDECBA - Dynamics of the apartment rental market, Buenos Aires, Q2 2026 (Informe de resultados 2049) · checked 28 Sep 2026
A studio (monoambiente, about 30 m²) averages 565,658 pesos a month; a one-bedroom of 43 m² averages 764,485 pesos. Small flats vary little between barrios.
OfficialIDECBA - Dynamics of the apartment rental market, Buenos Aires, Q2 2026 (Informe de resultados 2049) · checked 28 Sep 2026
Three quarters of listings are homes with one bedroom at most. A family with two children can use about a quarter of the market.
OfficialIDECBA - Dynamics of the apartment rental market, Buenos Aires, Q2 2026 (Informe de resultados 2049) · checked 28 Sep 2026
Arequipa
A three-bedroom apartment in Yanahuara or Cayma is 2000–4400 soles a month, most often 2500–3000 (about 700–900 dollars). Building maintenance fees on top.
SpecialistUrbania: apartments for rent in Yanahuara · checked 29 Sep 2026
A three-bedroom apartment in Cayma by listings: 157–490k dollars, median about 225k. Sellers quote prices in dollars.
SpecialistUrbania: apartments for sale in Cayma · checked 29 Sep 2026
Money and prices
Buenos Aires
The city's basket for a family with two children is 2.08 million pesos a month, but without rent. With the rent of a three-room flat it comes to 3.3–3.5 million.
OfficialIDECBA - Poverty lines and consumer baskets of the City of Buenos Aires, August 2026 (Informe de resultados 2054) · checked 28 Sep 2026
The food basket for a family of four is 985,617 pesos a month at city prices (August 2026). Up 34.7% over the year.
OfficialIDECBA - Poverty lines and consumer baskets of the City of Buenos Aires, August 2026 (Informe de resultados 2054) · checked 28 Sep 2026
Middle class by the city's yardstick starts at 2.6 million pesos for a family of four, and that is with owned housing.
OfficialIDECBA - Poverty lines and consumer baskets of the City of Buenos Aires, August 2026 (Informe de resultados 2054) · checked 28 Sep 2026
Arequipa
The average resident of the region spends 876 soles a month, which for a family of four is about 3500. Rent alone for a three-bedroom apartment in Cayma is 2500–3000.
OfficialINEI: Arequipa, statistical compendium 2025 · checked 29 Sep 2026
A rough guide is about 830 soles a month for a family of four: food accounts for 23.7% of the urban price basket, and average spending per person is 876 soles.
OfficialINEI: Arequipa, statistical compendium 2025 · checked 29 Sep 2026
Family and kids
Buenos Aires
Fee ceilings in schools with state support: primary (half-day) 44–224k pesos a month, secondary 55–297k.
SpecialistiProfesional - new fee caps in CABA private schools from September 2026 · checked 28 Sep 2026
Arequipa
The most expensive schools in the city charged 750–1775 soles a month in 2024. In 80% of private schools the fee is below 400 soles a month.
SpecialistEncuentro: 80% of private schools in Arequipa charge under 400 soles, table of monthly fees 2023-2024 from Identicole · checked 29 Sep 2026
Almost every second pupil in Arequipa attends a private school: 47% across the two city education authorities, 54% in the northern one (2024 census).
OfficialINEI: Arequipa, statistical compendium 2025 · checked 29 Sep 2026
Healthcare
Buenos Aires
A mid-level plan costs 110–280k pesos a month per person; OSDE 210 cost 285k in September 2026. For a family, multiply.
SpecialistComparison of private health insurance (prepagas) prices, September 2026 · checked 28 Sep 2026
With residency, city hospitals are free on equal terms with Argentines. Without a DNI, elective care is paid; emergency care is for everyone.
OfficialResolución 1054/MSGC/2025 - procedure for treating patients without an Argentine DNI in city hospitals · checked 28 Sep 2026
Arequipa
The city is at 2335 m, just below the CDC altitude sickness threshold (2450 m). For children the CDC sees no particular risk, and it advises caution with infants under 6 weeks.
OfficialCDC Yellow Book: high-altitude travel and altitude sickness · checked 29 Sep 2026
The level III public hospital Honorio Delgado: paediatrics, neonatology, intensive care, neurosurgery, oncology. The social insurer EsSalud has 29 facilities in the region.
OfficialHospital Regional III Honorio Delgado: website and list of services · checked 29 Sep 2026
Transport
Buenos Aires
The metro is 1,753 pesos per trip, a bus from 888. Fares drop from the 21st trip in a month. A family spends about 127k a month.
OfficialRed SUBE - AMBA public transport fares, in effect from 1 September 2026 · checked 28 Sep 2026
Arequipa
The airport is 8 km from the centre and is open between 5 and 22 hours. The departures board on 29 September 2026 showed 22 departures: 20 to Lima and 2 to Cusco, with no international ones.
SpecialistAeropuertos Andinos del Perú: Arequipa airport and departures board · checked 29 Sep 2026
Climate
Buenos Aires
The average July temperature is 11.5 degrees: about 8 at night, about 16 by day. Snow comes once in several generations, but you need heating in winter.
SpecialistClimates to Travel - climate of Buenos Aires, 1991-2020 normals · checked 28 Sep 2026
About 1,260 mm a year and 77 rainy days – there is no dry season. It rains most in summer, winter is the driest. Downpours sometimes cause flooding.
SpecialistClimates to Travel - climate of Buenos Aires, 1991-2020 normals · checked 28 Sep 2026
Arequipa
In winter it is about 5.5 degrees at night and 21–22 during the day. Daytime temperature is almost the same all year round, with a day-night difference of 13–16 degrees.
OfficialWMO, World Weather Information Service: climate normals of Arequipa · checked 29 Sep 2026
About 95 mm a year, and almost all of it in January–March. From April to November, 0 to 2 mm a month falls.
OfficialWMO, World Weather Information Service: climate normals of Arequipa · checked 29 Sep 2026
Even in July, SENAMHI forecast an ultraviolet index of 8–12 for Arequipa, from “very high” to “extreme”. The weather service advises staying out of the sun from 9 to 16.
SpecialistInfobae: SENAMHI warns of extreme ultraviolet in the southern sierra, 4-6 July 2026 · checked 29 Sep 2026
Safety
Buenos Aires
In 2025 there were 2.53 homicides per 100k residents – the lowest since 1995, below the national average (3.7).
OfficialBuenos Aires crime map, summary report for 2025 · checked 28 Sep 2026
Arequipa
IGP calls Misti the most dangerous volcano in Peru: more than a million people live on its slopes and around it. The last eruption was in the fifteenth century.
OfficialIGP: volcanic Arequipa, 5 facts about active volcanoes · checked 29 Sep 2026
The 2001 earthquake of magnitude 8.2 caused shaking of intensity VIII on the Mercalli scale in Arequipa. According to IGP, about 30% of the energy off the southern coast has still not been released.
OfficialIGP: memories of the earthquake that will happen again (Arequipa, 2001) · checked 29 Sep 2026
Internet and phone
Buenos Aires
Fibre at 300 Mbps costs about 14–22k pesos a month on promotion, 500 Mbps 22–36k. The main trap: after 6–12 months the list price kicks in, and it is three to four times higher.
SpecialistMovistar Argentina - 300 Mbps fiber plan · checked 28 Sep 2026
Arequipa
Movistar sells home fibre at 400 Mbit/s for 89.90 soles a month, 79.90 for the first two months. Arequipa is on Movistar's list of fibre zones.
SpecialistMovistar Perú: “Solo internet” plans · checked 29 Sep 2026
Services
Buenos Aires
Without subsidies, electricity, gas and water cost about 142k pesos a month in spring and up to 166k in winter. Expensas (the building fee) are not included in this amount.
SpecialistTN citing the Observatorio de Tarifas y Subsidios IIEP (UBA-CONICET) - AMBA utilities basket, September 2026 · checked 28 Sep 2026
Edesur electricity without a subsidy: 157 pesos per kWh plus 3,632 a month (category 151–400 kWh). For 300 kWh about 50.8k pesos without IVA (33 dollars).
OfficialEdesur: cuadro tarifario, ENReGE resolution 535/26, in effect from 1 September 2026 · checked 30 Sep 2026
Metrogas gas without a subsidy: 316 pesos per m³ plus a fixed charge of 4.4–53.8k a month, without taxes. 100 m³ in winter (category R2 2°) – about 47.6k pesos (31 dollars).
OfficialMetrogas: cuadros tarifarios, September 2026 (tariffs for homes without SEF subsidies, excluding taxes) · checked 30 Sep 2026
Arequipa
For consumption above 140 kWh, electricity costs 0.66 soles per kWh plus 3.60 soles a month, without IGV tax. 200 kWh is about 136 soles before tax.
OfficialSEAL: tariff schedule No. 003-2026 for end users, from 4 February 2026 · checked 29 Sep 2026
Water and sewerage: the first 10 m³ at 1.65 soles, then 2.96 and 6.00. A bill for 15 m³ is about 41 soles with tax; this is a calculation based on the SEDAPAR tariff.
OfficialSunass: resolution 00146-2025-SUNASS-CD, SEDAPAR tariff structure for year 5 of the 2021-2026 period · checked 30 Sep 2026
There is no piped gas concessionaire in Arequipa; the network is being built under the state Bonogas programme in five districts. The rest cook on cylinders, and we did not find their price.
OfficialMINEM: first stage of gas network construction in Arequipa, Moquegua and Tacna (Sur Oeste concession) · checked 30 Sep 2026

