Andalusia is generally safe for solo female travelers. It's a regularly traveled area with a high level of security, Spain often hosts vast numbers of tourists, and hence safety measures are often well-implemented. Small precautions must be taken when venturing into less crowded areas or during late hours, especially in larger cities. However, common tourist areas are frequently patrolled and have a helpful police presence. Always stay alert and conscious of your surroundings for personal safety. Making sure to respect local customs can also avoid unforeseen issues.