Argentina Climate – July 2026 Update
Top 5 Cities: Buenos Aires, Córdoba, Rosario, Mendoza, and La Plata
Summary
While global land temperatures reached their 3rd highest July level on record, Argentina experienced a subdued mid-winter, marked by an intense Antarctic cold snap that brought rare snowfall to Atlantic coastal beaches. Despite localised polar surges, the nation sat well below the broader South American warming trend. The winter chill unfolded against the backdrop of a moderate El Niño, which is intensifying and forecast to peak at Very Strong in Oct-Dec, with wetter conditions expected over the coming months.
This month in numbers
Argentina recorded an average temperature of 7.89°C, an anomaly of +0.5°C compared to the 1961–1990 baseline, ranking 27th of 87 years on record for the month. Globally, land temperatures in the same timeframe averaged 15.8°C, standing +1.6°C above baseline as the 3rd warmest July on record. Across the May to July quarter, Argentina recorded a mean temperature of 8.75°C (+0.1°C anomaly), placing 39th out of 87 years on record. Globally, the May to July season reached 14.34°C (+1.5°C anomaly), marking the 2nd warmest such three-month stretch on record.
What changed
Argentina's three-month temperature anomaly of +0.10°C ranked 229th out of 232 regions globally, placing it as the 4th coolest relative anomaly in our global tracking. For the single month, Argentina ranked 223rd of 232 regions, sitting among the bottom ten coolest anomalies worldwide. Within the South America regional group (South America), Argentina's monthly anomaly was 1.14°C cooler than the continental average of +1.62°C. In long-term context, Argentina's annual average temperature for 2025 reached 15.42°C, making it the 2nd warmest year in 86 years of records and reflecting an overall warming trend of +0.76°C above baseline.
What’s driving change?
The mid-winter pattern was influenced by that permitted Antarctic cold air masses to surge northward across central provinces, generating freezing temperatures and unusual coastal snow cover. Atmospheric shifts also triggered warm downhill Zonda winds along the Andes, creating extreme local temperature contrasts. Larger climate trends remain tied to ENSO dynamics, with a moderate El Niño currently active in the Pacific (ENSO). Historically, El Niño brings a 65% chance of wetter-than-average conditions to northern Argentina, though winter temperature impacts remain highly variable.
Looking ahead
With an 81% probability of a Very Strong El Niño developing during Oct-Dec, seasonal models indicate an increased risk of heavy precipitation and potential river flooding across northern Argentina as spring approaches.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Climate Map – Global
Source: NOAA Climate at a Glance (countries & continents) · Met Office (UK) · US states & climate regions. Anomalies are vs the 1961–1990 baseline. See methodology.
Typical Climate – Argentina
Köppen Cfa · TemperateArgentina has a temperate climate (Köppen Cfa: Humid subtropical), with distinct warm summers and cool-to-cold winters. January is typically the warmest month, averaging 22.1°C, while July is the coldest at 7.7°C. Annual precipitation averages around 625mm, spread fairly evenly across the year.
Monthly climate normals (2016–2025) - bar colour and height show average temperature, the shaded area shows average monthly rain, with snow (water-equivalent) shown separately.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Long-Term Trends
Combined Timeline – Argentina
Precipitation, Sunshine, Frost and Snow are converted to standard deviations from their own average so they can share an axis with Temperature.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Heatwave Days – Argentina
Warm Spell Duration Index (WSDI) - days in a 6+ day run above the local 90th-percentile temperature for that time of year.
Data: World Bank Climate Change Knowledge Portal (ERA5-derived). Refreshed roughly 1-2x/year, ~7-8 months behind present.
Year-on-Year Trends
The 4byo Climate Helix – Argentina
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Monthly Temperature – Argentina
Background lines show the last 40 years (plus the record year and its opposite, wherever they fall).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Records – Argentina
Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP) - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm / cold seasonsKöppen Cfb · TemperateHow spring and autumn have shifted in Argentina. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (14.2°C, from 1940–1969); autumn is the date they fall back below it. Temperature swings 13.4°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Oct (+1.5°C).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Climate Systems
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Emissions & Energy
Explore
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Data Sources
Data Sources for Argentina
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
Country-level temperature anomaly, sourced from Copernicus ERA5 and Hadley HadCRUT5.
Annual country and global CO₂ emissions, from the Global Carbon Project.
Monthly rainfall - Global Precipitation Climatology Centre (DWD) preferred, World Bank CCKP/CRU TS fallback where GPCC lacks direct coverage.
Frost Days and Heatwave Days (Warm Spell Duration Index), ERA5-derived. World Bank Climate Change Knowledge Portal.
Monthly snow water-equivalent, Global Precipitation Climatology Centre (DWD).
FAQs
FAQs
How is the climate in Argentina changing?
Argentina is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
What is the climate like in Argentina?
Argentina has a temperate climate (Köppen Cfa: Humid subtropical), with distinct warm summers and cool-to-cold winters. January is typically the warmest month, averaging 22.1°C, while July is the coldest at 7.7°C. Annual precipitation averages around 625mm, spread fairly evenly across the year.
Where does the climate data for Argentina come from?
Climate data for Argentina comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Argentina climate data cover?
The Argentina climate profile covers Buenos Aires, Córdoba, Rosario, Mendoza and surrounding areas. Temperature, rainfall and emissions data for Argentina
How often is the Argentina climate update refreshed?
The Argentina climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.
What counts as a Heatwave Day on the Argentina climate page?
Heatwave Days use the Warm Spell Duration Index (WSDI) - the WMO/ETCCDI-standard heatwave measure: days that are part of a run of 6 or more consecutive days above the local 90th-percentile temperature for that calendar day. The 90th-percentile threshold varies by time of year (a hot day in January is judged differently to one in July) but is fixed to the 1961-1990 baseline for every year shown - it does not shift as the climate warms, which is why Heatwave Days trend upward over time.
Does the Argentina climate page include frost and snow data?
Yes. Frost Days (days with a minimum temperature below 0°C, World Bank CCKP) and snow water-equivalent (GPCC) are shown alongside temperature and precipitation, each measured against the 1961-1990 baseline where a like-for-like historical comparison is available.