15.09.2023
In Bordeaux, the dance between water and weather is crucial, shaping the character and quality of wines each year. In 2023, these elements appear to be in good harmony, promising exceptional Bordeaux wines. This contrasts with last year, when southwestern France was hit by extreme drought, wildfires, and a lack of rainfall.
Bordeaux typically receives between 800 and 1,000 millimeters of precipitation annually, evenly distributed throughout the year. This constant water supply is vital for vine growth, but its timing is of great importance. Spring rains from March to May provide water to the vines during their vegetative growth phase, promoting the healthy development of leaves and buds.
The Problem of Mildew
During the 2023 wine season in Bordeaux, mildew posed a significant challenge for winemakers. Mildew, caused by fungi, thrives in conditions of high humidity and rainfall—conditions to which Bordeaux, with its temperate maritime climate, is particularly susceptible. From March to June 2023, while the vines were in their vulnerable growth phase, continuous rain fell in Bordeaux. Although this humidity is generally beneficial, it also created ideal conditions for mildew development. The warm temperatures in May and June exacerbated the problem, accelerating fungal growth. In 2023, the strong threat of mildew made vineyard protection management in Bordeaux much more complex. In some areas, the fungus destroyed a significant portion of the harvest.
Vineyard Protection in Organic Viticulture
In this situation, organic vineyards like Le Pin Beausoleil face additional challenges, as chemical treatments are not allowed. Instead, we use alternative methods such as copper sprays and careful management of soil and canopy to limit the spread of mildew. This year, the situation required particularly intensive work—often many hours a day in the vineyard.
Outlook for a Good Quality 2023 Harvest
Aside from the threat of mildew, weather conditions in Bordeaux from March to September were favorable for viticulture. In March and April, there was sufficient rain, providing the vines with the necessary moisture to start their growth. May and June brought warm, sunny days during which the vines thrived, while occasional rain maintained soil moisture. In July and August, warm, dry periods alternated with short showers, which helped maintain the balance between sugar and acid levels in the grapes. The absence of extreme heatwaves prevented sunburn damage to the grapes and helped preserve their quality. In September, winemakers are now eagerly awaiting the harvest. At Le Pin Beausoleil, the harvest begins this week.