Argentina Weather by Month
Argentina is the second-largest country in South America and the eighth-largest in the world, with a diverse landscape that stretches from the subtropical regions in the north to the subpolar regions in the south. Bordered by Chile to the west, Brazil and Uruguay to the northeast, Bolivia and Paraguay to the north, and the Atlantic Ocean to the east, Argentina spans a range of climates due to its extensive latitude and varied topography.
The country can be divided into several distinct geographic regions:
- Northern Argentina: Includes the Gran Chaco, a flat, hot, and semi-arid region, and the subtropical areas of Misiones and Formosa, which are characterized by lush rainforests.
- Central Argentina: Consists of the Pampas, a vast plain known for its fertile soils and temperate climate, as well as the humid lowlands near Buenos Aires and the dry Cuyo region near Mendoza, home to vineyards.
- Western Argentina: Dominated by the Andes mountain range, with some of the highest peaks in the Western Hemisphere, including Aconcagua. This region has alpine and arid climates.
- Southern Argentina (Patagonia): A sparsely populated region with cool, windy plains and the glacial landscapes of Tierra del Fuego.
Argentina’s climate ranges from tropical in the north, temperate in the central regions, and cold and windy in the south. The country has four distinct seasons:
- Summer: December to February
- Autumn: March to May
- Winter: June to August
- Spring: September to November
Due to its vast geographical diversity, weather in Argentina varies significantly by region and time of year. Below is a detailed breakdown of the weather in Argentina by month.
January
Weather Overview
January is the peak of summer in Argentina. It’s a hot and humid month in most parts of the country, with warm temperatures dominating the northern and central regions.
Northern Argentina
- Temperature: 25°C to 40°C (77°F to 104°F)
- Rainfall: 100-200 mm
- Weather: Hot and humid, especially in Formosa, Chaco, and Misiones. Afternoon thunderstorms are common in the subtropical areas.
Central Argentina
- Temperature: 25°C to 35°C (77°F to 95°F)
- Rainfall: 80-150 mm
- Weather: Warm and sunny in Buenos Aires and the Pampas. The Cuyo region around Mendoza is hot and dry, ideal for wine tours.
Western Argentina
- Temperature: 15°C to 28°C (59°F to 82°F)
- Weather: Cool in the high Andes, with warm temperatures in the foothills. Great for trekking in Bariloche.
Southern Argentina (Patagonia)
- Temperature: 10°C to 22°C (50°F to 72°F)
- Weather: Mild and windy in Patagonia, with more stable weather for visiting El Calafate and Ushuaia. The glaciers are popular attractions during this time.
February
Weather Overview
February is another hot summer month in Argentina. The northern regions remain sweltering, but Patagonia remains cool and temperate, making it an ideal time to explore southern Argentina.
Northern Argentina
- Temperature: 24°C to 38°C (75°F to 100°F)
- Rainfall: 100-180 mm
- Weather: Hot and humid, with rain showers and thunderstorms, particularly in Misiones (home to Iguazu Falls) and the Gran Chaco.
Central Argentina
- Temperature: 24°C to 33°C (75°F to 91°F)
- Rainfall: 80-120 mm
- Weather: Warm with occasional showers in Buenos Aires and Córdoba. In Mendoza, the weather is dry and suitable for visiting vineyards.
Western Argentina
- Temperature: 14°C to 28°C (57°F to 82°F)
- Weather: Pleasant, with warm temperatures in the valleys and cool alpine climates in the Andes.
Southern Argentina (Patagonia)
- Temperature: 8°C to 20°C (46°F to 68°F)
- Weather: Cool and windy in Patagonia, with fewer tourists compared to January. Tierra del Fuego is a great destination for outdoor enthusiasts.
March
Weather Overview
March is the beginning of autumn, and the temperatures start to cool down across Argentina. The heat in the northern and central regions begins to dissipate, and Patagonia transitions into its shoulder season.
Northern Argentina
- Temperature: 22°C to 34°C (72°F to 93°F)
- Rainfall: 80-150 mm
- Weather: Warm with frequent rain showers, especially in the northeast near Iguazu Falls.
Central Argentina
- Temperature: 20°C to 30°C (68°F to 86°F)
- Rainfall: 60-100 mm
- Weather: Pleasant and warm, with occasional showers in Buenos Aires and the Pampas. Harvest season begins in Mendoza.
Western Argentina
- Temperature: 12°C to 25°C (54°F to 77°F)
- Weather: Ideal weather for outdoor activities like hiking and biking in Bariloche and the Lake District.
Southern Argentina (Patagonia)
- Temperature: 6°C to 16°C (43°F to 61°F)
- Weather: Cooler and windier in Patagonia, but still good for hiking and glacier tours. The crowds in popular spots like El Chaltén thin out.
April
Weather Overview
April marks the height of autumn in Argentina. Temperatures cool down significantly, and the fall foliage in some regions, particularly Córdoba and Bariloche, creates beautiful landscapes.
Northern Argentina
- Temperature: 18°C to 30°C (64°F to 86°F)
- Rainfall: 60-100 mm
- Weather: Warm and slightly humid, with scattered showers in Formosa, Salta, and Tucumán.
Central Argentina
- Temperature: 15°C to 25°C (59°F to 77°F)
- Rainfall: 50-90 mm
- Weather: Mild and comfortable, ideal for walking around Buenos Aires and exploring Rosario.
Western Argentina
- Temperature: 10°C to 22°C (50°F to 72°F)
- Weather: Mild and pleasant in Mendoza and San Juan, making it an ideal time for wine tours and outdoor activities.
Southern Argentina (Patagonia)
- Temperature: 4°C to 12°C (39°F to 54°F)
- Weather: Cold and windy in Patagonia, with many tourist facilities starting to close for the winter season. Good for off-peak visits to El Calafate and Ushuaia.
May
Weather Overview
May is late autumn in Argentina, with cooler temperatures and an increase in rainfall in some regions. Patagonia becomes quieter as the colder weather sets in.
Northern Argentina
- Temperature: 15°C to 25°C (59°F to 77°F)
- Rainfall: 40-80 mm
- Weather: Cooler with fewer rain showers. It’s a good time to visit Iguazu Falls for more manageable temperatures and fewer tourists.
Central Argentina
- Temperature: 12°C to 22°C (54°F to 72°F)
- Rainfall: 40-70 mm
- Weather: Comfortable, with mild weather in Buenos Aires and Córdoba. The leaves change color in the Sierras de Córdoba.
Western Argentina
- Temperature: 8°C to 18°C (46°F to 64°F)
- Weather: Cool in the Andes, with the first snowfalls beginning in higher altitudes. Mendoza and San Juan experience pleasant conditions for vineyard tours.
Southern Argentina (Patagonia)
- Temperature: 2°C to 8°C (36°F to 46°F)
- Weather: Cold and windy, with the first signs of winter in Patagonia. Some areas in Tierra del Fuego may start to see snowfall.
June
Weather Overview
June is the start of winter in Argentina, with cold temperatures, especially in Patagonia and the Andes. Ski season kicks off in places like Bariloche and Las Leñas.
Northern Argentina
- Temperature: 10°C to 20°C (50°F to 68°F)
- Rainfall: 20-60 mm
- Weather: Cooler, but still pleasant and relatively dry. Salta and Jujuy offer comfortable hiking conditions.
Central Argentina
- Temperature: 8°C to 18°C (46°F to 64°F)
- Rainfall: 20-50 mm
- Weather: Cool, with crisp mornings and evenings in Buenos Aires and La Pampa. The Cuyo region around Mendoza becomes cooler, ideal for wine tastings by the fire.
Western Argentina
- Temperature: 4°C to 12°C (39°F to 54°F)
- Weather: Ski resorts in the Andes start to open. Bariloche becomes a winter wonderland, drawing skiers and snowboarders.
Southern Argentina (Patagonia)
- Temperature: -2°C to 6°C (28°F to 43°F)
- Weather: Very cold and snowy, especially in Tierra del Fuego and Ushuaia, where the ski season also begins.
July
Weather Overview
July is the coldest month of the year in Argentina, with snow across the Andes and Patagonia. Ski resorts are in full swing, and the weather in the northern regions remains mild.
Northern Argentina
- Temperature: 8°C to 18°C (46°F to 64°F)
- Rainfall: 10-50 mm
- Weather: Cool and dry, with sunny days and chilly nights in Salta, Jujuy, and Formosa.
Central Argentina
- Temperature: 6°C to 15°C (43°F to 59°F)
- Rainfall: 20-40 mm
- Weather: Cold and dry in Buenos Aires and the Pampas. Snowfall is rare in these areas, but the evenings can be very chilly.
Western Argentina
- Temperature: 2°C to 10°C (36°F to 50°F)
- Weather: Snowfall in the Andes, with ski resorts such as Las Leñas and Bariloche attracting winter sports enthusiasts.
Southern Argentina (Patagonia)
- Temperature: -5°C to 4°C (23°F to 39°F)
- Weather: Freezing temperatures and heavy snow in Patagonia and Tierra del Fuego. Visitors come to experience the icy landscapes and winter sports in Ushuaia.
August
Weather Overview
August remains cold in Argentina, particularly in the southern and western regions, though temperatures begin to rise slightly as winter nears its end.
Northern Argentina
- Temperature: 10°C to 20°C (50°F to 68°F)
- Rainfall: 10-40 mm
- Weather: Cool and dry, perfect for trekking in Jujuy and visiting cultural sites in Salta.
Central Argentina
- Temperature: 7°C to 17°C (45°F to 63°F)
- Rainfall: 20-40 mm
- Weather: Cold mornings and nights in Buenos Aires and La Pampa. Mendoza is cool and dry, with the ski season still active in the Andes.
Western Argentina
- Temperature: 3°C to 12°C (37°F to 54°F)
- Weather: Cold with snow in the mountains, ideal for skiing in Bariloche and Las Leñas.
Southern Argentina (Patagonia)
- Temperature: -4°C to 6°C (25°F to 43°F)
- Weather: Freezing cold with snow in Patagonia and Tierra del Fuego. Skiing and snowboarding continue in Ushuaia.
September
Weather Overview
September marks the start of spring in Argentina. While the northern regions warm up, Patagonia remains cool. The ski season in the Andes comes to a close.
Northern Argentina
- Temperature: 15°C to 26°C (59°F to 79°F)
- Rainfall: 20-60 mm
- Weather: Warm and dry, with blossoming landscapes in Salta, Jujuy, and Misiones.
Central Argentina
- Temperature: 12°C to 22°C (54°F to 72°F)
- Rainfall: 30-60 mm
- Weather: Pleasant spring weather in Buenos Aires and the Pampas. The vineyards in Mendoza start preparing for spring growth.
Western Argentina
- Temperature: 8°C to 18°C (46°F to 64°F)
- Weather: Cool but warming up in Bariloche and San Juan, with snow still visible in the highest peaks of the Andes.
Southern Argentina (Patagonia)
- Temperature: 2°C to 10°C (36°F to 50°F)
- Weather: Cold and windy, but the first signs of spring start to appear in Patagonia. Ushuaia and El Calafate see fewer tourists and a transition from winter to spring.
October
Weather Overview
October is full spring in Argentina, and temperatures continue to rise. Patagonia warms up, and wildflowers bloom in the Pampas and Andes.
Northern Argentina
- Temperature: 18°C to 30°C (64°F to 86°F)
- Rainfall: 50-100 mm
- Weather: Warm and dry, with some showers in Misiones and Formosa. Great weather for visiting Iguazu Falls.
Central Argentina
- Temperature: 15°C to 26°C (59°F to 79°F)
- Rainfall: 40-80 mm
- Weather: Warm and sunny in Buenos Aires and Mendoza, with cool breezes in the evenings.
Western Argentina
- Temperature: 12°C to 22°C (54°F to 72°F)
- Weather: Cool and pleasant in Bariloche and the Andes, perfect for outdoor adventures like hiking and cycling.
Southern Argentina (Patagonia)
- Temperature: 4°C to 14°C (39°F to 57°F)
- Weather: Mild and windy, with spring flowers blooming in Patagonia. Good weather for hiking and exploring the Los Glaciares National Park.
November
Weather Overview
November is late spring in Argentina, with warm weather in the north and central regions. Patagonia experiences more comfortable temperatures, making it a great time for travel.
Northern Argentina
- Temperature: 20°C to 32°C (68°F to 90°F)
- Rainfall: 60-120 mm
- Weather: Warm and humid, with showers in Misiones and the Chaco.
Central Argentina
- Temperature: 18°C to 28°C (64°F to 82°F)
- Rainfall: 50-90 mm
- Weather: Warm and pleasant in Buenos Aires and Rosario. Mendoza experiences great weather for wine tasting and vineyard tours.
Western Argentina
- Temperature: 14°C to 24°C (57°F to 75°F)
- Weather: Ideal temperatures for outdoor activities in San Juan, Bariloche, and Uspallata.
Southern Argentina (Patagonia)
- Temperature: 6°C to 16°C (43°F to 61°F)
- Weather: Mild and windy, with good weather for visiting Tierra del Fuego and the Valdés Peninsula for whale watching.
December
Weather Overview
December is the start of summer in Argentina, with warm temperatures across most of the country. It’s peak season for Patagonia and the Lake District, while the northern regions become hot and humid.
Northern Argentina
- Temperature: 24°C to 36°C (75°F to 97°F)
- Rainfall: 100-200 mm
- Weather: Hot and humid, with frequent rain showers in Misiones and Formosa.
Central Argentina
- Temperature: 22°C to 32°C (72°F to 90°F)
- Rainfall: 80-150 mm
- Weather: Warm and sunny in Buenos Aires and the Pampas, with increasing rain in Córdoba.
Western Argentina
- Temperature: 18°C to 30°C (64°F to 86°F)
- Weather: Hot and dry in Mendoza and San Juan, perfect for visiting vineyards and hiking in the Andes.
Southern Argentina (Patagonia)
- Temperature: 10°C to 20°C (50°F to 68°F)
- Weather: Mild and windy in Patagonia, with clear skies and great conditions for visiting El Calafate and Bariloche.
