What’s happening in the vineyard during January?

During January in Luján de Cuyo, vineyard work is focused on supporting the most intense growth stage of the year, taking advantage of the Mendoza summer climate and preparing the vines for the upcoming harvest.

☀️ Climate and growth

January is one of the warmest months of the year in Luján de Cuyo, with average high temperatures around 27 °C and mild nights of approximately 16–17 °C, along with an average of 9 to 11 hours of sunshine per day. Rainfall is scarce, though occasionally intense, and relative humidity remains moderate to low.

These warm, dry conditions encourage strong vegetative growth, with good accumulation of sugars and phenolic compounds in the developing clusters. The region’s typical thermal amplitude (the difference between day and night temperatures) helps grapes ripen evenly, preserving acidity even under high daytime temperatures.

🌱 Vineyard work

During this month, vineyard teams focus on:

• Shoot thinning and canopy management: to optimize sun exposure and improve airflow around the clusters, reducing disease risk.

• Irrigation management: due to the dry climate, irrigation programs (drip irrigation or controlled dry farming) are adjusted to avoid excessive water stress while encouraging flavor concentration.

• Sanitary monitoring: close monitoring for fungal diseases such as downy mildew or botrytis, although dry conditions limit their development.

• Crop load adjustment and green pruning: to balance fruit quantity and vegetative growth, prioritizing grape quality over volume.

  
  

These tasks are essential, as they define the productive structure that will reach its peak in the coming months, leading into cluster ripening and the harvest, which typically begins in late February or early March.

🍇 Key to the harvest

Although harvest has not yet begun in January, vineyard activity during this period defines many factors of the 2026 vintage:

• Fruit health, influenced by the dry and stable conditions of the month, which can enhance grape resistance to diseases later in the season.

• The balance between canopy and fruit, which is crucial for producing high-quality wines, especially emblematic regional varieties such as Malbec and Cabernet Sauvignon.

  
  

📍 A month of transition

January marks a phase in which the vine accelerates its metabolism following flowering and fruit set. The detailed work carried out in the vineyard during this month prepares the vines to face the peak of summer and arrive at harvest with healthy, well-structured clusters, ready to express the terroir of Luján de Cuyo in the next vintage.