Santiago in 2050: climate change in numbers
Santiago has warmed 0.1 °C, comparing the last ten years (2016–2025) with 1951–1980 — slower than the world as a whole (+1.1 °C). By 2050, its climate is projected to feel like Pretoria, South Africa today.
2050 = 2040–2059 average, intermediate emissions (SSP2-4.5), median of CMIP6 climate models. “Today” = 1991–2020. Model range for average temperature: 16.3–17.3 °C.
Santiago: average annual temperature, 1950–2025 (°C)
1950 → 2025. Santiago's warming stripes: each stripe is one year's average temperature.
What Santiago's climate will feel like
Matching temperature, heat extremes, frost days and rainfall against the current climate of more than 1,000 large cities, Santiago's 2050 climate is closest to Pretoria, South Africa — about 9,200 km away.
| Santiago today | Santiago 2050 | Pretoria today | |
|---|---|---|---|
| Average temperature | 15.5 °C | 16.7 °C | 18.1 °C |
| Average daily high | 22.2 °C | 23.5 °C | 24.9 °C |
| Hottest day | 34 °C | 35 °C | 35 °C |
| Frost days | 12 | 9 | 1 |
| Rainfall | 522 mm | 496 mm | 670 mm |
A year in Santiago, day by day
Each square is one day of the year; the coloured squares are the days that cross the threshold in an average year.
Days above 30 °C (86 °F) in Santiago
Tropical nights in Santiago (never cooler than 20 °C)
Frost days in Santiago (below 0 °C)
What changes by 2050
- The average temperature rises a further 1.2 °C compared with 1991–2020 (model range 0.7–1.7 °C).
- Days above 30 °C (86 °F) rise from about 29 a year (1991–2020) to about 58 by 2040–2059.
- Annual rainfall is projected to decrease by about 7%, though precipitation projections are less certain than temperature.
Dangerous heat in Santiago
Even by 2090 under very high emissions, Santiago is not projected to have days with a heat index of 39 °C or more in a typical year. See where dangerous heat spreads worldwide.
Under high emissions
If emissions keep rising (SSP5-8.5), Santiago would average 17.2 °C by 2040–2059, with a hottest day around 35 °C and 75 days above 30 °C (86 °F) a year. By mid-century the scenarios are still close; the choices made now mostly decide what happens after 2050 — see the world in 2050.
More places
Compare Santiago with…Climate change in ChileBuenos AiresLimaSao PauloRio de Janeiro
Frequently asked questions
How hot will Santiago be in 2050?
Under an intermediate emissions scenario (SSP2-4.5), Santiago's average annual temperature in 2040–2059 is projected at about 16.7 °C (range 16.3–17.3 °C across climate models), compared with 15.5 °C in 1991–2020. The hottest day of a typical year reaches about 35 °C (95 °F).
Is Santiago getting hotter?
Yes. The last ten years (2016–2025) averaged 0.1 °C warmer than 1951–1980 in Santiago, slower than the global average of 1.1 °C over the same period (Copernicus ERA5).
Which city will Santiago feel like in 2050?
By 2040–2059, Santiago's climate is projected to resemble the climate of Pretoria, South Africa today, based on temperature, heat extremes, frost and rainfall.
What would happen under high emissions?
Under a very high emissions scenario (SSP5-8.5), Santiago's average temperature in 2040–2059 is projected at 17.2 °C and the hottest day at about 35 °C. The differences between scenarios grow much larger after 2050.
Sources: World Bank Climate Change Knowledge Portal (CMIP6 0.25°, ERA5 0.25°); Copernicus ERA5 reanalysis (C3S/ECMWF); NASA NEX-GDDP-CMIP6 (Thrasher et al. 2022); GeoNames
Method: Delta method: ERA5 1995–2014 + CMIP6 ensemble change 2040–2059 vs 1995–2014. Values are for the ~25 km grid cell containing the city and can differ from a single weather station, especially for coastal and mountain cities. Methodology · Download CSV
Licence: Derived from ERA5 (CC BY 4.0, Copernicus/ECMWF), CMIP6 via World Bank CCKP (CC BY-SA 4.0) and GeoNames (CC BY 4.0). City data on this site: CC BY-SA 4.0. · Generated 17 October 2026