Winter 2026 begins this Sunday in South America, marked by the winter solstice and the year’s shortest day. According to reports from regional outlets including La Voz del Interior and El Mostrador, the season brings the longest night of the year to Argentina and Chile, accompanied by rainy forecasts and astrological predictions for the zodiac.
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Key Details
- Event: Winter Solstice / Start of Winter 2026
- Primary Locations: Chile and Argentina (including Santa Fe)
- Astronomical Marker: The shortest day and longest night of the calendar year
- Weather Forecast: Rainy conditions projected for the season’s start
When Does Winter 2026 Begin in South America?
The winter season officially commences this Sunday, according to local reports. In Argentina, La Voz del Interior reports that the transition occurs at a specific date and hour, marking the formal shift into the coldest season of the year. In Chile, El Mostrador identifies this period as the winter solstice, which produces the shortest day of the year.
Regional coverage highlights specific impacts in different provinces. In Santa Fe, Argentina, Sol Play 91.5 reports that the onset of the season is defined by the arrival of the longest night of 2026.
Rainy Forecasts and Regional Weather
The start of the season is expected to be wet. According to diarioeldia.cl, projections indicate that the beginning of winter will be rainy, signaling a damp start to the colder months.

Astrological Predictions for the Season
The astronomical shift has prompted a focus on lifestyle and astrological trends. Clarin.com has released a winter 2026 horoscope, providing specific guidance and predictions for every zodiac sign as the season begins.
While outlets like El Mostrador and Sol Play 91.5 focus on the astronomical data of the solstice, the coverage from Clarin.com shifts the narrative toward the cultural and personal impact of the seasonal change through astrology.