A temperature of 64-70°F (18-21°C) is considered ideal. At lower temperatures, below 54°F (12°C), the desired aging process of the cigars is impaired. Therefore, cold wine cellars are only suitable for cigar storage to a limited extent. Even worse are high temperatures. Temperatures of over 75°F (24°C) can lead to worm infestation and cigar rotting. For this reason, the humidor should not be exposed to direct sunlight.