September weather forecast
Argentina

September marks the arrival of spring in Argentina, leading to warmer temperatures throughout the country and varying rainfall levels across different regions.

In the northern regions of Argentina, such as Salta and Tucuman, the climate continues to warm, with temperatures typically ranging from 15°C (59°F) to 25°C (77°F). September in these regions remains relatively dry, although the humidity starts to increase slightly towards the end of the month.

In the central regions, including Buenos Aires, Cordoba, and Rosario, spring weather brings temperatures ranging from 8°C (46.4°F) to 20°C (68°F). Buenos Aires sees an increase in rainfall in September, with an average precipitation of 70mm (2.76"), continuing the trend from August.

The southernmost regions of Argentina, including Patagonia and Tierra del Fuego, experience a rise in temperatures but remain relatively cold. The temperatures in these areas generally range from 2°C (35.6°F) to 10°C (50°F). While the frequency of snowfall decreases, it can still occur, especially in higher altitudes.

In the Andean region of Argentina, encompassing cities such as Mendoza and San Juan, temperatures continue to rise, typically falling between 6°C (42.8°F) and 20°C (68°F). Despite the warming trend, the climate in this region remains dry in September.

Compared to August, Argentina in September sees an increase in temperatures across the country, signalling the transition into spring. As the country moves from September into October, temperatures will continue to rise, and the central regions will begin to experience the peak of the rainy season.

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• Buenos Aires - September »
  On the first day of September in Buenos Aires, sunrise is at 07:11 and sunset at 18:35. In Buenos Aires, during September, the rain falls for 9 days and regularly aggregates up to 44mm (1.73") of precipitation.
• Cordoba - September »
  On the first day of September in Cordoba, sunrise is at 07:32 and sunset at 19:01. On the first day of September in Cordoba, sunrise is at 07:32 and sunset at 19:01.
• Rosario - September »
  On the last day of September, in Rosario sunrise is at 06:40 and sunset at 19:04 -03. In Rosario, in September, during 7.5 rainfall days, 34mm (1.34") of precipitation is typically accumulated.
• Mendoza - September »
  The months with the most sunshine in Mendoza, Argentina, are January, September and December, with an average of 9.7h of sunshine. During 0.7 snowfall days, in September, Mendoza aggregates 7mm (0.28") of snow.
• San Miguel de Tucumán - September »
  In San Miguel de Tucumán, Argentina, in September, it is raining for 6.4 days, with typically 14mm (0.55") of accumulated precipitation. In San Miguel de Tucumán, during September, the rain falls for 6.4 days and regularly aggregates up to 14mm (0.55") of precipitation.
• La Plata - September »
  On the first day of September in La Plata sunrise is at 07:09 and sunset at 18:33. In La Plata in September, during 7 rainfall days, 74mm (2.91") of precipitation is typically accumulated.
• Mar del Plata - September »
  July, September and October, with an average relative humidity of 77%, are the most humid months in Mar del Plata, Argentina. With an average sea temperature of 10.4°C (50.7°F), September is the month with the coldest seawater in Mar del Plata, Argentina.
• Santa Fe - September »
  September, the first month of the spring in Santa Fe, is an agreeable month, with an average temperature varying between 10.9°C (51.6°F) and 22°C (71.6°F). In Santa Fe, during September, the rain falls for 9.1 days and regularly aggregates up to 37mm (1.46") of precipitation.
• Salta - September »
  The months with the highest UV index in Salta are January through March, September through December, with an average maximum UV index of 5. In Salta, during September, the rain falls for 5.2 days and regularly aggregates up to 12mm (0.47") of precipitation.
• San Juan - September »
  August, September and November, with an average of 9.9h of sunshine, are months with the most sunshine in San Juan, Argentina. September is the last month it regularly snows in San Juan, Argentina.
• Resistencia - September »
  In Resistencia, Argentina, in September, during 9.1 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Resistencia, in September, during 9.1 rainfall days, 36mm (1.42") of precipitation is typically accumulated.
• Neuquen - September »
  In Neuquen, during September, the rain falls for 4 days and regularly aggregates up to 17mm (0.67") of precipitation. In September, in Neuquen, Argentina, the rain falls for 4 days.