The room temperature should be between 10 and 16°C. Whether the temperature is low or high within this range is not very important, although the ideal temperature is 12°C. What is important is to avoid temperature fluctuations: not slow seasonal variations, but especially daily variations. It is better to have a warm cellar (without exceeding 17°C) with a stable temperature than a cellar that goes from 12°C at night to 16°C during the day; in such a cellar, the wine will quickly become tired.