Tirunelveli is moderately safe for solo female travelers. Like many parts of India, one must exercise the usual safety precautions. Day trips and exploring city centers can be done without worry, however, it is advised to avoid isolated areas and traveling alone at night if possible. Locals are generally polite and helpful, but you might encounter instances of staring, especially in rural areas. Reliable transportation is available but should be arranged through trusted platforms or hotels. Always remember, your safety is primarily contingent on your personal awareness and choices.