How long do raisins need to dry?

Raisins typically take about 1 to 3 weeks to dry, depending on the drying method and environmental conditions. For sun-drying, warm, dry weather is ideal, while mechanical dehydrators can speed up the process to around 24 to 48 hours. Factors like humidity, temperature, and grape variety also influence drying time. It's important to ensure they are fully dried to prevent spoilage.